KR101824006B1 - Mobile terminal - Google Patents

Abstract

The present invention relates to a mobile terminal supporting a plurality of mobile communication services. A mobile terminal according to an embodiment of the present invention includes a main body, a wireless communication module mounted on the main body, and an antenna connected to the wireless communication module and receiving a radio frequency (RF) signal. A first transceiver for detecting a first signal from one radio frequency signal distributed by the splitter and controlling reception of the first signal detected; And a second transceiver that detects a second signal that shares a frequency band with the first signal from the other radio frequency signal distributed by the splitter and controls reception of the detected second signal.

Description

[0001] MOBILE TERMINAL [0002]

The present invention relates to a mobile terminal, and more particularly, to a mobile terminal supporting a plurality of mobile communication services.

A terminal can be divided into a mobile or portable terminal and a stationary terminal depending on whether the terminal is movable or not. The mobile terminal can be divided into a handheld terminal and a vehicle mount terminal according to whether the user can directly carry the mobile terminal.

In order to provide a plurality of mobile communication services such as GSM (Global System for Mobile communications), CDMA (Code Division Multiple Access), WCDMA (Wideband Code Division Multiple Access) and LTE (Long Term Evolution) Lt; RTI ID = 0.0 > and / or < / RTI >

In providing a plurality of mobile communication services as described above, a plurality of antennas are generally used. In addition, as the performance of wireless communication is improved by using a technique such as Multiple Input Multiple Output (MIMO) or Diversity, the number of antennas mounted on a mobile terminal is gradually increasing. However, the increase of the number of antennas causes a problem of increasing the volume and size of the mobile terminal.

It is an object of the present invention to reduce the number of antenna and signal paths required for processing signals of multiple frequency bands in a mobile terminal.

A mobile terminal according to an embodiment of the present invention includes a main body, a wireless communication module mounted on the main body, and an antenna connected to the wireless communication module and receiving a radio frequency (RF) signal. A first transceiver for detecting a first signal from one radio frequency signal distributed by the splitter and controlling reception of the first signal detected; And a second transceiver that detects a second signal that shares a frequency band with the first signal from the other radio frequency signal distributed by the splitter and controls reception of the detected second signal.

The wireless communication module may further include a low noise amplifier for amplifying the radio frequency signal and transmitting the amplified radio frequency signal to the splitter. At this time, the amount of amplification of the radio frequency signal by the low noise amplifier may be larger than the amount of attenuation by the splitter.

In an embodiment, the first and second signals may be in different intervals within the shared frequency band. And, the first signal may be used for voice service, and the second signal may be used for data service.

In an embodiment, the wireless communication module is connected to the first antenna, and can separate the transmission frequency and the reception frequency of the radio frequency signal.

According to another aspect of the present invention, there is provided a mobile terminal including a main body, a wireless communication module mounted on the main body, and first and second antennas connected to the wireless communication module and each receiving first and second radio frequency signals, . Here, the first radio frequency signal includes first and second signals, and the second radio frequency signal includes third and fourth signals respectively corresponding to the first and second signals.

Wherein the wireless communication module includes a first splitter for distributing the first radio frequency signal to a plurality of the first radio frequency signals, a second splitter for distributing the second radio frequency signals to a plurality of the first radio frequency signals, A first transceiver for detecting the first signal from the second radio frequency signal distributed by the second splitter and for detecting a third signal from the one second radio frequency signal distributed by the second splitter and for controlling the reception of the detected first and third signals, And detecting the second signal from another first radio frequency signal distributed by the first splitter and detecting a fourth signal from another second radio frequency signal distributed by the second splitter, And a second transceiver for controlling reception of the detected second and fourth signals.

In an embodiment, the first and second radio frequency signals may be correlated based on multiple input multiple output (MIMO) or diversity. The first to fourth signals may share a frequency band. The shared frequency band may include first and second intervals. The first and third signals may be present in the first section, and the second and fourth signals may be present in the second section. The first and third signals may be used for voice services, and the second and fourth signals may be used for data services.

The wireless communication module may further include a first low noise amplifier amplifying the first RF signal and transmitting the amplified first RF signal to the first splitter, and a second low noise amplifier amplifying the second RF signal and transmitting the amplified second RF signal to the second splitter, 2 low-noise amplifier.

In an exemplary embodiment, the wireless communication module may receive a third radio frequency signal having a frequency band different from the first radio frequency signal through the first antenna. The wireless communication module may further include a third splitter for distributing the third radio frequency signal to a plurality of the first radio frequency signals.

In an embodiment, the first transceiver may detect a fifth signal from one third radio frequency signal distributed by the third transceiver and control reception of the detected fifth signal. The second transceiver detects a sixth signal that shares the different frequency band with the fifth signal from another third radio frequency signal distributed by the third transceiver and receives the detected sixth signal Can be controlled.

The wireless communication module may include a first duplexer connected to the first antenna and separating the transmission frequency and the reception frequency of the first radio frequency signal from each other, a second duplexer connected to the second antenna, A second duplexer for separating the transmission frequency of the radio frequency signal from the reception frequency and a third duplexer connected to the first antenna and separating the transmission frequency and the reception frequency of the third radio frequency signal from each other, have.

In one embodiment, the wireless communication module is connected to the first antenna, the first duplexer, and the third duplexer, and the frequency band of the first radio frequency signal and the frequency band of the third radio frequency signal are And may further include a diplexer for separating from each other.

According to the mobile terminal according to the present invention, for the signals having similar characteristics, the number of antennas and internal signal paths can be reduced by integrating a part of an internal signal path and an antenna for receiving the signals with a splitter. Also, as the number of antennas and internal signal paths is reduced, the mobile terminal can be miniaturized and the production cost can be reduced.

1 is a block diagram illustrating a mobile terminal according to the present invention.
2 is a block diagram illustrating a mobile terminal according to an embodiment of the present invention.
3 and 4 are circuit diagrams showing the internal structure of a splitter according to the present invention.
5 is a conceptual diagram showing a radio frequency signal distributed by the splitter 241 according to the present invention.
6 is a block diagram illustrating a mobile terminal according to another embodiment of the present invention.
FIG. 7 is a block diagram showing a modified example of the mobile terminal shown in FIG. 2, and FIG. 8 is a block diagram showing a modified example of the mobile terminal shown in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily carry out the technical idea of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly explain the present invention, parts not related to the description are omitted, and like parts are denoted by similar reference numerals throughout the specification.

The mobile terminal described herein may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), a navigator, have. However, it should be understood that the configuration according to the embodiments described herein may be applied to a fixed terminal such as a digital TV, a desktop computer, and the like, unless it is applicable only to a mobile terminal. It will be easy to see.

1 is a block diagram illustrating a mobile terminal 100 according to the present invention. 1, a mobile terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, A controller 160, an interface unit 170, a controller 180, and a power supply unit 190. The components shown in Fig. 1 are not essential, so that a mobile terminal having more or fewer components can be implemented.

Hereinafter, the components 110 to 190 of the mobile terminal 100 will be described in order.

The wireless communication unit 110 may include one or more modules for enabling wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and the network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short distance communication module 114, and a location information module 115.

The broadcast receiving module 111 receives broadcast signals and broadcast related information from an external broadcast management server through a broadcast channel. Here, the broadcast-related information means information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast-related information can also be provided through a mobile communication network. In this case, the broadcast-related information may be received by the mobile communication module 112. The broadcast signal and the broadcast-related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 112 transmits and receives radio signals to at least one of a base station, an external terminal, and a server on a mobile communication network. Such wireless signals may include various types of data depending on a voice call signal, a video call signal, a text message, or a multimedia message transmission / reception.

The wireless Internet module 113 is a module for wireless Internet access, and may be embedded in the mobile terminal 100 or externally. WLAN (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) and the like can be used as wireless Internet technologies.

The short-range communication module 114 refers to a module for short-range communication. As a short range communication technology, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and the like can be used.

The position information module 115 is a module for acquiring the position of the mobile terminal 100, and a representative example thereof is a Global Position System (GPS) module.

1, an A / V (Audio / Video) input unit 120 is for inputting an audio signal and a video signal, and may include a camera 121, a microphone 122, and the like. The camera 121 processes image frames such as still images and moving images obtained by the image sensor in the video communication mode or the photographing mode. The image frame processed by the camera 121 can be displayed on the display unit 151. [ The image frame may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. [ More than two cameras 121 may be provided depending on the use environment.

The microphone 122 processes the sound signal input from the outside in the communication mode, the recording mode, the voice selection mode, and the like as electrical voice data. The voice data processed by the microphone 122 in the communication mode can be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 112 and output. The microphone 122 may be implemented with various noise reduction algorithms for eliminating noise generated when an external sound signal is input.

The user input unit 130 generates input data for controlling the operation of the mobile terminal 100 by a user. The user input unit 130 may include a key pad, a dome switch, a touch pad (static pressure and static electricity), a jog wheel, a jog switch, and the like.

The sensing unit 140 senses the current state of the mobile terminal 100 such as presence or absence of a user, the open / close state of the mobile terminal 100, position, orientation, acceleration, deceleration, And generates a sensing signal. For example, when the mobile terminal 100 is in the form of a slide phone, the sensing unit 140 may detect whether the slide phone is opened or closed. The sensing unit 140 may sense whether the power supply unit 190 is powered on, whether the interface unit 170 is connected to an external device, and the like.

The sensing unit 140 may include a proximity sensor 141. The sensing unit 140 may include a touch sensor (not shown) for sensing a touch operation with respect to the display unit 151.

The touch sensor may have the form of a touch film, a touch sheet, a touch pad, or the like. The touch sensor may be configured to convert a pressure applied to a specific portion of the display portion 151 or a change in capacitance generated at a specific portion of the display portion 151 into an electrical input signal. The touch sensor can be configured to detect not only the position and area to be touched but also the touch pressure.

When the touch sensor and the display unit 151 have a mutual layer structure, the display unit 151 can be used as an input device in addition to the output device. The display unit 151 may be referred to as a 'touch screen'.

If there is a touch input via the touch screen, corresponding signals are sent to a touch controller (not shown). The touch controller processes the signals transmitted from the touch sensor, and then transmits data corresponding to the processed signals to the controller 180. Thus, the control unit 180 can know which area of the display unit 151 is touched.

In the case where the touch screen is electrostatic, it can be configured to detect the proximity of the sensing object by a change of the electric field along the proximity of the sensing target. Such a touch screen may be classified as proximity sensor 141. [

The proximity sensor 141 refers to a sensor that detects the presence or absence of an object to be sensed without mechanical contact using an electromagnetic force or infrared rays. The proximity sensor 141 has a longer life than the contact type sensor and its utilization is also high. Examples of the proximity sensor 141 include a transmission type photoelectric sensor, a direct reflection type photoelectric sensor, a mirror reflection type photoelectric sensor, a high frequency oscillation type proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor.

Hereinafter, for convenience of explanation, a proximity action is referred to as " proximity touch " while an object to be sensed does not touch the touch screen, and an action of touching the sensing object on the touch screen is called & touch ".

The proximity sensor 141 detects the presence or absence of a proximity touch and a proximity touch pattern (for example, a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, The information corresponding to the presence / absence of proximity touch and the proximity touch pattern can be output to the touch screen.

The output unit 150 generates an output related to visual, auditory, tactile, and the like. The output unit 150 may include a display unit 151, an audio output module 153, an alarm unit 154, and a haptic module 155.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, when the mobile terminal 100 operates in the call mode, the display unit 151 displays a UI (User Interface) or a GUI (Graphic User Interface) related to the call. When the mobile terminal 100 operates in the video communication mode or the photographing mode, the display unit 151 displays the photographed image, the received image, the UI, the GUI, and the like.

The display unit 151 may be a liquid crystal display (LCD), a thin film transistor liquid crystal display (TFT-LCD), an organic light emitting diode (OLED), a flexible display display, a 3D display, and an e-ink display.

At least one display (or display element) included in the display unit 151 may be configured to be transparent or light transmissive so that the display can see the outside through it. This can be referred to as a transparent display. A typical example of such a transparent display is TOLED (Transparent OLED). The rear structure of the display unit 151 may also be of a light transmission type. With this structure, the user can see an object located behind the terminal body through the area occupied by the display unit 151 in the terminal body.

There may be two or more display units 151 according to the embodiment of the mobile terminal 100. [ For example, in the mobile terminal 100, a plurality of display portions may be spaced apart from each other or positioned integrally with one another, and may be located on different surfaces.

The sound output module 153 may output audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception mode, a call mode or a recording mode, a voice selection mode, a broadcast reception mode, The sound output module 153 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. [ The sound output module 153 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 154 outputs a signal for notifying the occurrence of an event of the mobile terminal 100. Examples of events generated in the mobile terminal 100 include call signal reception, message reception, key signal input, touch input, and the like. The alarm unit 154 may output a signal for informing occurrence of an event in a form other than the video signal or the audio signal, for example, vibration. The display unit 151 and the audio output module 153 may be classified as a part of the alarm unit 154 because the video signal or the audio signal can be output through the display unit 151 or the audio output module 153. [

The haptic module 155 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 155 is vibration. The intensity, pattern, and the like of the vibration generated by the tactile module 155 are controllable. For example, different vibrations may be synthesized and output or sequentially output.

In addition to the vibration, the haptic module 155 may be configured to perform various functions such as a pin arrangement vertically moving with respect to the contact skin surface, a spraying force or a suction force of the air through the injection port or the suction port, a touch on the skin surface, contact with an electrode, Various effects can be generated such as the effect of heat generation and the effect of reproducing the cold sensation using the heat absorbing or heatable element.

The haptic module 155 can be configured to not only transmit the tactile effect through the direct contact but also to allow the user to feel the tactile effect through the muscular sense of the finger or arm. At least two haptic modules 155 may be provided according to the configuration of the mobile terminal 100.

The memory 160 may store a program for the operation of the controller 180 and temporarily store input and output data (e.g., a phone book, a message, a still image, a moving picture, etc.). The memory 160 may store data related to vibrations and sounds of various patterns that are output upon touch input on the touch screen.

The memory 160 may be a flash memory, a hard disk, a multimedia card micro type, a card type memory (e.g., SD or XD memory), a random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM) And may include at least one storage medium. The mobile terminal 100 may operate in association with a web storage that performs storage functions of the memory 160 on the Internet.

The interface unit 170 serves as a path for communication with all external devices connected to the mobile terminal 100. The interface unit 170 receives data from an external device or supplies power to each component in the mobile terminal 100 or transmits data to the external device. For example, the interface unit 170 may include a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device having an identification module, Input / output ports, video I / O ports, earphone ports, and the like.

The identification module is a chip for storing various information for authenticating the usage right of the mobile terminal 100 and includes a user identification module (UIM), a subscriber identity module (SIM), a general user authentication module Universal Subscriber Identity Module (USIM)). A device equipped with an identification module (hereinafter referred to as "identification device") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 100 through the port.

The interface unit 170 may be a path through which the power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle or various command signals input from the cradle by the user, (Not shown). The various command signals or power supplied from the cradle may also act as a signal for recognizing that the mobile terminal 100 is correctly mounted in the cradle.

The controller 180 controls the overall operation of the mobile terminal 100. For example, control and processing related to voice communication, data communication, video communication, and the like. The control unit 180 may include a multimedia module 181 for multimedia playback. The multimedia module 181 may be implemented in the control unit 180 or may be implemented separately from the control unit 180. [ The control unit 180 may perform pattern selection processing for selecting handwriting input and drawing input on the touch screen as characters and images, respectively.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power necessary for operation of the respective components.

The various embodiments described herein may be implemented in a recording medium readable by a computer or similar device using software, hardware, or a combination thereof.

According to a hardware implementation, the embodiments described herein may be applied to various types of application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays Microprocessors, microprocessors, and other electronic units for performing other functions, as will be appreciated by those skilled in the art. In some cases, the embodiments described herein may be implemented by the controller 180 itself.

According to a software implementation, embodiments such as the procedures and functions described herein may be implemented with separate software modules. Each of the software modules may perform one or more of the functions and operations described herein. Software code may be implemented in a software application written in a suitable programming language. Such software codes may be stored in the memory 160 and executed by the control unit 180. [

Hereinafter, a method of processing user input to the mobile terminal 100 will be described.

The user input unit 130 is operated to receive a command for controlling the operation of the mobile terminal 100, and may include a plurality of operation units. The operating units may also be referred to as manipulating portions and may be employed in any manner as long as they are operated in a tactile manner by the user's tactile sense.

Various kinds of time information can be displayed on the display unit 151. [ Such visual information can be displayed in the form of letters, numbers, symbols, graphics, icons, and the like, and can be formed as a three-dimensional stereoscopic image. At least one of a character, a number, a symbol, a graphic, and an icon may be displayed in a predetermined arrangement for inputting time information, thereby being implemented as a keypad. Such a keypad may be referred to as a so-called " soft key ".

The display unit 151 may operate as an entire area or may be divided into a plurality of areas and operated. In the latter case, the plurality of areas can be configured to operate in association with one another. For example, an output window and an input window may be displayed on the upper and lower portions of the display unit 151, respectively. The output window and the input window are areas allocated for outputting or inputting information, respectively. In the input window, a soft key with a number for inputting a telephone number may be output. When the soft key is touched, the number corresponding to the touched soft key is displayed in the output window. When the operating unit is operated, a call connection to the telephone number displayed in the output window may be attempted, or the text displayed in the output window may be entered into the application.

The display unit 151 or the touch pad may be configured to detect touch scrolling. The user can move the cursor or the pointer positioned on the displayed object, for example, the icon, on the display unit 151 by scrolling the display unit 151 or the touch pad. Further, when the finger is moved on the display unit 151 or the touch pad, the path along which the finger moves may be visually displayed on the display unit 151. [ This will be useful for editing the image displayed on the display unit 151. [

One function of the mobile terminal 100 may be executed in response to a case where the display unit 151 and the touch pad are touched together within a predetermined time range. In the case of being touched together, there may be a case where the user clamps the main body of the mobile terminal 100 using the thumb and index finger. At this time, one function of the mobile terminal 100 to be executed may be activation or deactivation for the display unit 151 or the touch pad, for example.

The mobile terminal 100 according to the present invention can integrally provide second generation (2G), third generation (3G), and fourth generation (4G) mobile communication services. For example, the mobile terminal 100 may be used for mobile communication systems such as Global System for Mobile communications (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), and Long Term Evolution To process signals of multiple frequency bands simultaneously.

As for the frequency band of the mobile communication system, the frequency band of 850 MHz, 900 MHz, 1,800 MHz, and 1,900 MHz is used for the GSM system. The second generation CDMA system (IS-95) and the third generation CDMA system (CDMA2000, WCDMA, etc.) can be classified into DCN (Digital Cellular Network) and PCS (Personal Communication Service) 800 MHz, and 850 MHz, and the PCS system uses frequency bands of 1,800 MHz (IS-95), 1,900 MHz (CDMA2000), and 2,100 MHz (WCDMA). The LTE system uses frequency bands of 700MHz, 800MHz, 1,800MHz, and 2,100MHz.

In the following, the structure of a mobile terminal that processes signals in multiple frequency bands using a smaller number of antennas and signal paths will be described in detail.

2 is a block diagram illustrating a mobile terminal according to an embodiment of the present invention. Referring to FIG. 2, the mobile terminal 200 includes a wireless communication module 202 and a plurality of antennas ANT1 and ANT2.

The wireless communication module 202 is mounted on the terminal body and includes duplexers 211 and 212, low noise amplifiers 221 and 222, power amplifying units 231 and 232, Splitters 241 and 242, and transceivers 251 and 252. [

The first duplexer 211 is connected to the first antenna ANT1, the first low-noise amplifier 221 and the first power amplifier 231 and converts the transmission frequency of the first radio frequency (RF) Separate. The second duplexer 212 is connected to the second antenna ANT2, the second low-noise amplifier 222, and the second power amplifier 232, and separates the transmission frequency of the second radio frequency signal from the reception frequency.

Here, the first radio frequency signal refers to a radio frequency signal transmitted and received through the first antenna ANT1, and the second radio frequency signal refers to a radio frequency signal transmitted and received through the second antenna ANT2.

In an embodiment of the present invention, the first radio frequency signal comprises first and second signals, and the second radio frequency signal may comprise third and fourth signals respectively corresponding to the first and second signals have. The first and second radio frequency signals may have the same frequency band. This means that the first to fourth signals share a frequency band. The first and second radio frequency signals may be used as a signal for implementing multiple input multiple output (MIMO) or diversity. That is, the first and second radio frequency signals may be correlated based on multiple input multiple output or diversity. Thus, the first and third signals may be correlated, and the second and fourth signals may be correlated.

In the embodiment of the present invention, the first and third signals are signals according to the DCN 1x scheme, and the second and fourth signals are signals according to the LTE scheme using the same frequency band (for example, 800 MHz) as the DCN 1x scheme . That is, the first and third signals may be used for voice service, and the second and fourth signals may be used for data service.

The first low noise amplifier 221 is connected between the first duplexer 211 and the first splitter 241 and amplifies the first radio frequency signal transmitted from the first duplexer 211. At this time, the amount by which the first radio frequency signal is amplified may be greater than the amount attenuated by the first splitter 241. This is to compensate not only the attenuation due to the signal distribution in the first splitter 241 but also the loss due to the signal processing in the first transceiver 251. The first low noise amplifier 221 transmits the amplified first radio frequency signal to the first splitter 241.

The second low noise amplifier 222 is connected between the second duplexer 212 and the second splitter 242 and amplifies the second radio frequency signal transmitted from the second duplexer 212. The second low noise amplifier 222 transmits the amplified second radio frequency signal to the second splitter 242.

The first power amplifier 231 is connected between the first duplexer 211 and the first transceiver 251 and amplifies the power of the first radio frequency signal transmitted from the first transceiver 251. For this, although not shown in the figure, the first power amplifier 231 may include a transmission filter, a power amplifier, an isolator, and the like. The transmit filter may pass the transmit frequency of the first radio frequency signal and remove noise mixed with the first radio frequency signal. The transmit filter can be implemented with a surface acoustic wave (SAW) filter. The power amplifier amplifies the power of the first radio frequency signal transmitted from the surface acoustic wave filter. The isolator may block the reflected wave of the first radio frequency signal flowing in the reverse direction to prevent damage to the power amplifier. The first power amplifier 231 transmits the amplified first RF signal to the first duplexer 211.

The second power amplifier 232 is connected between the second duplexer 212 and the second transceiver 252 and amplifies the power of the second radio frequency signal transmitted from the second transceiver 252. The second power amplifier 232 may be configured in the same manner as the first power amplifier 231. Therefore, redundant description will be omitted.

The first splitter 241 is connected to the first low noise amplifier 221, the first transceiver 251 and the second transceiver 252 and is connected to the first low noise amplifier 221, Distribution. For example, one first radio frequency signal may be distributed as two first radio frequency signals. At this time, as described above, the first radio frequency signal may be attenuated due to signal distribution.

The second splitter 242 is connected to the second low-noise amplifier 222, the first transceiver 251 and the second transceiver 252 and receives a second radio frequency signal transmitted from the second low- Distribution.

The first and second transceivers 251 and 252 may include at least one transmitting terminal and a receiving terminal for transmitting and receiving radio frequency signals. For example, the first transceiver 251 may include a transmit terminal for transmitting the first radio frequency signal and two receive terminals for receiving the first and second radio frequency signals, respectively. The second transceiver 252 may include a transmit terminal for transmitting the second radio frequency signal and two receive terminals for receiving the first and second radio frequency signals, respectively.

The first transceiver 251 detects a first signal from one first radio frequency signal distributed by the first splitter 241 and transmits a second radio frequency signal < RTI ID = 0.0 > The third signal can be detected. The second transceiver 252 detects a second signal from another second radio frequency signal distributed by the first splitter 241 and transmits the second radio frequency signal to the second transceiver 252 distributed by the second splitter 252, The fourth signal can be detected from the frequency signal.

On the other hand, the second and fourth signals not detected by the first transceiver 251 may be filtered out through the first transceiver 251. The first and third signals not detected by the second transceiver 252 may then be filtered out through the second transceiver 252.

The first transceiver 251 controls the reception of the detected first and third signals and the second transceiver 252 can control the reception of the detected second and fourth signals. For example, the first transceiver 251 may demodulate the detected first and third signals and the second transceiver 252 may demodulate the detected second and fourth signals.

As described above, according to the mobile terminal according to the present invention, a radio frequency signal including signals according to different mobile communication methods sharing a frequency band can be received through one antenna. The received radio frequency signals may be distributed by a splitter and transmitted to a plurality of transceivers. Each transceiver can detect and process useful signals in a radio frequency signal transmitted from a splitter. In summary, for signals of similar characteristics, the antenna for receiving it and a portion of the internal signal path may be integrated using a splitter. This reduces the number of antennas and internal signal paths.

Hereinafter, the first and second splitters 241 can be configured to be identical to each other. Therefore, only the first splitter 241 will be described in detail with reference to FIGS. 3 and 4. For convenience of explanation, 1 splitter " will be referred to as a " splitter ".

3 and 4 are circuit diagrams showing the internal structure of a splitter according to the present invention. 5 is a conceptual diagram showing a radio frequency signal distributed by a splitter according to the present invention. 3 shows an embodiment of the splitter 241, and Fig. 4 shows another embodiment of the splitter 241. In Fig.

Referring to FIG. 3, the splitter 241 may be implemented as a resistor circuit. The splitter 241 may include one input terminal IN, two output terminals OUT1 and OUT2, and resistors R1 to R3. The first resistor R1 is connected between the input terminal IN and the first output terminal OUT1 and the second resistor R2 is connected between the input terminal IN and the second output terminal OUT2, The third resistor R3 may be connected between the first and second output terminals OUT1 and OUT2.

The first to third resistors R1 to R3 may have the same resistance value. In this case, the radio frequency signals inputted through the input terminal IN can be evenly distributed to two. One distributed radio frequency signal is output through the first output terminal OUT1, and the other distributed radio frequency signal is output through the second output terminal OUT2.

Referring to Fig. 4, the splitter 241 may be implemented as an LC circuit. The splitter 241 may include one input terminal IN, two output terminals OUT1 and OUT2, capacitors C1 and C2 and inductors L1 and L2. The first capacitor C1 may be connected between the input terminal IN and the first output terminal OUT1 and the second capacitor C2 may be connected between the input terminal IN and the second output terminal OUT2 . The first inductor L1 may be connected between the first output terminal OUT1 and the ground GND and the second inductor L2 may be connected between the second output terminal OUT2 and the ground GND.

The first and second capacitors C1 and C2 have the same capacitance, and the first and second inductors L1 and L2 may have the same induction coefficient. In this case, as in the case of FIG. 3, the radio frequency signals inputted through the input terminal IN can be equally divided into two signals.

Referring to FIG. 5, a radio frequency signal RFS input to the splitter 241 may include first and second signals S1 and S2 that share a frequency band, as described above. That is, the first and second signals S1 and S2 may share the frequency band of the radio frequency signal RFS.

The frequency band of the radio frequency signal RFS may include a plurality of intervals. For example, the radio frequency signal RFS may include first and second intervals, as shown. The intervals of these frequency bands can be determined based on the mobile communication standard.

The first and second signals S1 and S2 may be present in the first and second sections of the shared frequency band, respectively. Although not shown, third and fourth signals corresponding to the first and second signals S1 and S2 may also be present in the first and second sections of the same frequency band, respectively.

As shown, when the radio frequency signal RFS is split into two by the splitter 241, the two distributed radio frequency signals RFS 'and RFS " can be attenuated. However, the frequency characteristic can be maintained as it is.

2), and the other distributed radio frequency signal RFS " is transmitted to the second transceiver 252 (see FIG. 2) Lt; / RTI > Then, the first transceiver 251 can detect and demodulate the first signal S1 from the transmitted radio frequency signal RFS ', and ignore the second signal S2. Then, the second transceiver 252 detects and demodulates the second signal S2 from the transmitted radio frequency signal RFS ", and can ignore the first signal S1.

6 is a block diagram illustrating a mobile terminal according to another embodiment of the present invention. Hereinafter, a description overlapping with the mobile terminal 200 shown in FIG. 2 will be omitted. Referring to FIG. 6, first and third radio frequency signals having different frequency bands are received through a first antenna ANT1, and second and fourth radio frequency signals having different frequency bands are received by a second antenna Lt; RTI ID = 0.0 > ANT2. ≪ / RTI > At this time, the frequency bands of the first and second radio frequency signals may be the same, and the frequency bands of the third and fourth radio frequency signals may be the same. For example, the frequency bands of the first and second radio frequency signals may be 800 MHz, and the frequency bands of the third and fourth radio frequency signals may be 1,900 MHz.

The third and fourth radio frequency signals may be configured in the same manner as the first and second radio frequency signals. Thus, the third radio frequency signal may include fifth and sixth signals, and the fourth radio frequency signal may include seventh and eighth signals, respectively, corresponding to the fifth and sixth signals. The first and second radio frequency signals may then be correlated based on multiple input multiple output or diversity.

The fifth and seventh signals are used for voice service as a signal according to the PCS 1x scheme, and the sixth and eighth signals can be used for data service as signals according to the PCS EVDO scheme.

6, the wireless communication module 302 includes third and fourth duplexers 313 and 314, third and fourth low-noise amplifiers 323 and 324, third and fourth power amplifying units 333 and 333, 334, third and fourth splitters 343, 344, first and second diplexers 361, 362, and the like.

The third duplexer 313 is connected to the first antenna ANT1, the third low-noise amplifier 323 and the first power amplifier 333 to separate the transmission frequency of the third radio frequency signal from the reception frequency. The fourth duplexer 314 is connected to the second antenna ANT2, the fourth low-noise amplifier 324 and the fourth power amplifier 334, and separates the transmission frequency of the fourth radio frequency signal from the reception frequency.

The third low noise amplifier 323 is connected between the third duplexer 313 and the third splitter 343 and amplifies the third radio frequency signal transmitted from the third duplexer 313. The fourth low noise amplifier 324 is connected between the fourth duplexer 314 and the fourth splitter 344 and amplifies the fourth radio frequency signal transmitted from the fourth duplexer 314.

The third power amplifying unit 333 is connected between the third duplexer 313 and the first transceiver 351 and amplifies the power of the third radio frequency signal transmitted from the first transceiver 351. The fourth power amplifier 334 is connected between the fourth duplexer 314 and the second transceiver 352 and amplifies the power of the fourth RF signal transmitted from the second transceiver 352.

The third splitter 343 is connected to the third low noise amplifier 323, the first transceiver 351 and the second transceiver 352 and is connected to the third low noise amplifier 323 through a plurality of third radio frequency signals Distribution. The fourth splitter 344 is connected to the fourth low-noise amplifier 324, the first transceiver 351 and the second transceiver 352. The fourth splitter 344 receives the fourth radio frequency signal transmitted from the fourth low- Distribution.

The first transceiver 351 may further include a transmission terminal for transmitting the third radio frequency signal and two reception terminals for receiving the third and fourth radio frequency signals, respectively. The second transceiver 352 may further include a transmission terminal for transmitting the fourth radio frequency signal and two reception terminals for receiving the third and fourth radio frequency signals, respectively.

The first transceiver 351 detects a fifth signal from one third radio frequency signal distributed by the third splitter 343 and detects one fourth radio frequency signal distributed by the fourth splitter 344, The seventh signal can be detected. The second transceiver 352 detects the sixth signal from another third radio frequency signal distributed by the third splitter 343 and the other fourth radio The eighth signal can be detected from the frequency signal.

The first transceiver 351 controls the reception of the detected fifth and seventh signals and the second transceiver 352 can control the reception of the detected sixth and eighth signals. For example, the first transceiver 351 may demodulate the detected fifth and seventh signals, and the second transceiver 352 may demodulate the detected sixth and eighth signals.

The first diplexer 361 is connected to the first antenna ANT1, the first duplexer 311 and the third duplexer 313 and is connected to the frequency band of the first radio frequency signal and the frequency band of the third radio frequency signal Can be separated from each other. The second diplexer 362 is connected to the second antenna ANT2, the second duplexer 312 and the fourth duplexer 314 and is connected to the frequency band of the second radio frequency signal and the frequency band of the fourth radio frequency signal Can be separated from each other.

As described above, according to another embodiment of the present invention, the signal path can be extended so that radio frequency signals having different frequency bands share an antenna using a diplexer.

FIG. 7 is a block diagram showing a modified example of the mobile terminal shown in FIG. 2, and FIG. 8 is a block diagram showing a modified example of the mobile terminal shown in FIG. Hereinafter, a duplicate description will be omitted.

Referring to FIG. 7, the second transceiver 452 may further include a reception terminal for receiving GPS signals. The second transceiver 452 may control the reception of the GPS signal. The receiving path of the GPS signal is shown as being formed between the second antenna ANT2 and the second transceiver 452, but it is not limited thereto and can be variously modified. For example, the receive path of the GPS signal may be formed between the first antenna ANT1 and the first transceiver 451 or the second transceiver 452. [

The mobile terminal 400 may further include a diplexer 462 and a reception filter unit 472. The diplexer 462 is connected to the second antenna ANT2, the second duplexer 412 and the reception filter unit 472 and is capable of separating the frequency band of the second radio frequency signal from the frequency band of the GPS signal have.

The receive filter unit 472 is connected between the diplexer 462 and the second transceiver 452 and passes the reception frequency of the GPS signal. To this end, although not shown in the figure, the receive filter unit 472 may include a low noise amplifier and at least one receive filter. The low noise amplifier amplifies the GPS signal transmitted from the diplexer 462. The receive filter passes the reception frequency of the GPS signal. The receive filter can be implemented with a surface acoustic wave filter.

Referring to FIG. 8, a reception path of the GPS signal formed between the second antenna ANT2 and the second transceiver 552 is shown in FIG. The reception filter unit 572 is also connected between the second diplexer 562 and the second transceiver 552 in the same manner as in Fig. 7, and passes the reception frequency of the GPS signal.

As described above, according to the modification shown in FIGS. 7 and 8, even if the reception path of the GPS signal is added, it is not necessary to add an antenna.

According to the embodiment disclosed herein, the above-described method can be implemented by a code that can be read by a processor on a medium on which the program is recorded. Examples of the medium that can be read by the processor include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, etc., and may be implemented in the form of a carrier wave (e.g., transmission over the Internet) .

In the mobile terminal disclosed in this specification, the configuration and method of the above-described embodiments are not limitedly applied, but all or some of the embodiments may be selectively combined so that various modifications can be made.

Claims (16)

delete delete delete delete delete delete main body; A wireless communication module mounted on the main body; And first and second antennas coupled to the wireless communication module and each receiving first and second radio frequency signals,
Wherein the first radio frequency signal comprises first and second signals and the second radio frequency signal comprises third and fourth signals respectively corresponding to the first and second signals,
The wireless communication module includes:
A first splitter for distributing the first radio frequency signals to a plurality of frequencies;
A second splitter for distributing the second radio frequency signals to a plurality of frequencies;
Detecting the first signal from one of the first radio frequency signals distributed by the first splitter and detecting the third signal from one of the second radio frequency signals distributed by the second splitter, A first transceiver for controlling reception of the first and third signals detected; And
Detecting the second signal from another one of the first radio frequency signals distributed by the first splitter and detecting the fourth signal from another one of the second radio frequency signals distributed by the second splitter And a second transceiver for controlling reception of the detected second and fourth signals,
A third radio frequency signal having a frequency band different from the first radio frequency signal is received through the first antenna,
Wherein the wireless communication module further comprises a third splitter for distributing the third radio frequency signal to a plurality of radio frequency signals,
The first transceiver detects a fifth signal from one third radio frequency signal distributed by the third splitter and controls reception of the detected fifth signal,
The second transceiver detects a sixth signal that shares the different frequency band with the fifth signal from another third radio frequency signal distributed by the third splitter, and receives the detected sixth signal Control,
The wireless communication module includes:
A first duplexer connected to the first antenna, the first duplexer separating the transmission frequency and the reception frequency of the first radio frequency signal;
A second duplexer connected to the second antenna, the second duplexer separating the transmission frequency and the reception frequency of the second radio frequency signal; And
And a third duplexer connected to the first antenna for separating the transmission frequency of the third radio frequency signal from the reception frequency,
Further comprising a diplexer connected to the first antenna, the first duplexer, and the third duplexer, the diplexer separating a frequency band of the first radio frequency signal from a frequency band of the third radio frequency signal, terminal. 8. The method of claim 7,
Wherein the first and second radio frequency signals are correlated based on multiple input multiple output (MIMO) or diversity. 8. The method of claim 7,
Wherein the first to fourth signals share a frequency band. 10. The method of claim 9,
Wherein the shared frequency band includes first and second intervals,
Wherein the first and third signals are present in the first section and the second and fourth signals are present in the second section. 8. The method of claim 7,
Wherein the first signal, the second signal and the third signal are used for voice service, and the second signal, the fourth signal, and the sixth signal are used for data service. The method of claim 7, wherein
The wireless communication module includes:
A first low noise amplifier amplifying the first RF signal and transmitting the amplified first RF signal to the first splitter;
A second low noise amplifier amplifying the second RF signal and transmitting the amplified second RF signal to the second splitter; And
And a third low-noise amplifier for amplifying the third RF signal and transmitting the amplified RF signal to the third splitter. delete delete delete delete

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