KR100745701B1 - A radio transceiver for measuring environments of wireless communication equipments - Google Patents

Abstract

The present invention measures the degree of separation between the surrounding radio wave environment and the transmitting and receiving aerials in the process of migrating a wireless communication device relaying a weak signal, and it is easy to check whether the coaxial cable for a communication device installed in an underground building is normally operated. The present invention relates to a radio wave transmitting and receiving device for environmental measurement of a wireless communication device to be able to measure.

According to the present invention, the frequencies of 800 MHz and 2 kHz generated from the first and second local oscillation frequency generators 11 and 16 of the transmitter 10 are respectively the first to third attenuators 12-14 and the fourth to third frequencies. After the sixth attenuators 17 and 19 are combined in the signal combiner 21 through the first and second amplifiers 15 and 20 and radiated through an antenna, the first isolator 31 of the receiver 30 is radiated. Alternatively, by forcibly matching the signal received by the non-matching in the second isolator 32 to eliminate the signal loss caused by the reflected wave, and combine the signals of the two bands in the signal combiner 33, the attenuator 34 and the frequency synthesizer 38 And the first and second surface elastic filters 41 and 42, the terminal amplifier 43 and the detector 44 after amplifying the signal changed to the intermediate frequency through the low frequency filter 39 and the like to the predetermined level. It is possible to indicate the current state of the signal received through the antenna under the control of the central processing unit (45) through). Auxiliary power sources 24 and 47 are provided in the transmitter 10 and the receiver 30 to measure the radio wave environment of the corresponding site by grasping the state or receiving radio signals emitted from the wireless communication device. Even when the main power is not supplied, it can be easily measured while moving using the auxiliary power (24) (47).

       Wireless communication equipment, transmitting air line, receiving air line, coaxial cable, environmental measurement

Description

       A radio transceiver for measuring environments of wireless communication equipments

1 is a schematic diagram showing a conventional radio transceiver

2 is a block diagram showing a radio wave transmitting apparatus of the present invention.

3 is a block diagram showing a radio wave receiving apparatus of the present invention.

4 is a conceptual diagram illustrating a separation measurement of a transmission and reception antenna in a wireless communication device according to the present invention.

5 is a conceptual diagram showing a loss measurement of a coaxial cable for a wireless communication device installed in the basement of a building according to the present invention.

<Explanation of symbols for main parts of the drawings>

10: transmitter 11,36: first local oscillation frequency generator

12-14,17-19: Attenuator 15: First Amplifier

16:37 second local oscillation frequency generator 20: second amplifier

21, 33: signal combiner 22, 45: central processing unit

24, 47: auxiliary power supply 30: receiver

31, 32: isolate 38: frequency synthesizer

39: low frequency filter 43: terminal amplifier

The present invention relates to a radio wave transmitting and receiving apparatus for environmental measurement of a wireless communication device, and in particular, in the process of shunting a wireless communication device for relaying signals, measuring the radio wave environmental conditions of the surroundings and the degree of separation between a transmitting aerial and a receiving aerial and an underground building. It is possible to measure whether the coaxial cable for the communication equipment installed in the normal operation with a simple operation, the battery that can be charged and discharged by the auxiliary power supply is built for the operator to carry and use.

Conventionally, as shown in FIG. 1, in the case where the repeater is located in the basement of the building, the connection state was checked using expensive measuring equipment to check whether the receiving aerial line and the coaxial line of the repeating period are properly connected. The signal generator 1 is connected to the receiving aerial 2 side and the signal analyzer 3 is connected to the output aerial of the repeater 4 connected to the transmitting aerial 5.

However, in the conventional cable operation state measuring device, since the work is mainly performed in the area where the electrical wiring is not provided, in the case of the signal generator 1, a separate power supply device was required.

In addition, conventionally, a place where a plurality of equipment is installed in a certain place must be provided with a power line, there is a problem that the contact loss occurs because the branch circuit and the connector is used.

The present invention is to solve the conventional problems as described above is an object of the present invention is built-in auxiliary power supply having a charge-discharge circuit is easy to move and portable and consists of only the minimum necessary functions between the transmitter and the receiver A simple operation of the present invention provides a radio wave transmission and reception apparatus for environmental measurement of a wireless communication device that enables measurement according to separation between aerial lines and normal operation of a coaxial cable.

In order to achieve the above object, the present invention measures the degree of separation between the surrounding radio wave environment and the transmitting and receiving aerials in the process of releasing a wireless communication device relaying a weak signal, and the coaxial cable for the communication device installed in the underground building operates normally. In the apparatus for determining whether or not, the transmitter is connected to the donor aerial line and the receiver is connected to the service aerial line is configured to measure the separation of the transmitting and receiving aerial line, connecting the transmitter for transmitting a signal of a predetermined frequency band to the receiving aerial line and coaxial cable It is configured to measure the normal operation of the coaxial cable to be used by connecting the receiver to the end of, characterized in that to display the radio wave environment and operation state information of the coaxial cable on the screen using the measurement results.

The present invention provides a transmitter comprising: a first local oscillation frequency generator for generating 800 MHz, a first analog attenuator for controlling gain, a second and a third attenuator configured to be adjustable to an arbitrary signal strength by a user, A first amplifier for amplifying the intensity to a predetermined level, a second local oscillation frequency generator for generating a frequency in the 2 kHz band, a fourth analog attenuator for controlling the gain, and a fifth configured to allow the user to adjust the signal to an arbitrary signal strength A sixth attenuator, a second amplifier for amplifying the signal strength to a predetermined level, a signal combiner for combining the signals of the first and second amplifiers, a central processing unit for collecting and analyzing all the information, and processing the information. Characterized in that it comprises a display unit for informing.

The present invention is a receiver, the first and second isolator forcibly matching the signal fed back by the non-matching between the signal coupler, attenuator for blocking the strong signal from the outside, weak signal passing through the attenuator A low noise amplifier for amplifying the signal to a predetermined level, a first local oscillation frequency generator for generating a local oscillation frequency, and converting a signal of the low noise amplifier and the first local oscillation frequency generator to an intermediate frequency Select only the signal to be used from the frequency synthesizer, the low frequency filter passing only the intermediate frequency of the frequency generated from the first and second local oscillation frequency generator and limiting the frequency above and the signal passing through the intermediate frequency amplifier. First and second surface elastic filters for the first stage, termination amplifiers for amplifying the output of the large signal, and detecting the signal strength. Li is characterized in that the detector, configured to include a display section for notifying a central processing unit and the processed information signal to control and monitor all of the above series of processes to the user.

The present invention is characterized in that the portable auxiliary power source capable of charging and discharging are mounted on the transmitter and the receiver, respectively.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 shows a configuration of the transmitter 10 of the present invention, which includes a first local oscillation frequency generator 11 generating 800 MHz, a first analog attenuator 12 for controlling gain, and a user's arbitrary signal. Second and third attenuators 13 and 14 configured to be adjustable in intensity, a first amplifier 15 for amplifying the signal intensity to a predetermined level, and a second local oscillation for generating a frequency in the 2 kHz band. A frequency generator 6, a fourth analog attenuator 17 for controlling gain, fifth and sixth attenuators 18 and 19 configured to be controlled by the user at any signal intensity, and a signal strength A second amplifier 20 for amplifying the signal to a predetermined level, a signal combiner 21 for combining the signals of the first and second amplifiers 15 and 16, and a central processing for collecting and analyzing all the information. A device 22, a display section 23 for informing information processed by the central processing unit 22, and a main power supply for a predetermined time It consists of an auxiliary power supply 24 for supplying power to enable normal operation without.

3 shows a configuration of the receiver 30 of the present invention, and includes first and second isolators 31 and 32 for forcibly matching a signal fed back by non-matching between the aerial line and the signal separator 33. An attenuator 34 for blocking external strong signals introduced through the signal separator 33, a low noise amplifier 35 for amplifying a weak signal strength through the attenuator 34 to a predetermined level; Mixing signals of the first and second local oscillation frequency generators 36 and 37 to generate a local oscillation frequency and the low noise amplifier 35 and the first and second local oscillation frequency generators 36 and 37 A low frequency filter 39 for passing only the intermediate frequency of the frequency generated from the first and second local oscillation frequency generators 36 and 37 and limiting the frequency above And a first and second table for selecting only a desired signal among the signals passed through the intermediate amplifier 40. A face-elastic filter (41) (42), a terminal amplifier (43) for amplifying to output a large signal, and a detector (44) for detecting the signal strength from the terminal amplifier (43) and informing the central processing unit (45). ), A central processing unit 45 for controlling and monitoring all the above-described processes, a display unit 46 for informing the user of the information signal processed by the central processing unit 45, and the main power supply has been stopped. It consists of an auxiliary power source 47 for supplying power so that a normal power supply is made for several hours.

Referring to the operation of the present invention configured as described above is as follows.

According to the present invention, when the first local oscillation frequency generator 11 generates and outputs an 800 MHz frequency, the first local oscillation frequency generator 11 is amplified to a predetermined level in the first amplifier 15 through the first to third attenuators 12-14 and the signal combiner 21. Will send a signal.

The transmitted signal is radiated into the air through the air. At this time, the first attenuator 12 limits the size of the signal emitted to the outside, and sets the signal strength to a predetermined signal size predetermined by the manufacturer before shipping the product. Done.

In addition, the first to third attenuators 12-14 may allow the transmitter user to adjust the signal strength at any time during use.

On the other hand, the second local oscillation frequency 16 generates and outputs a frequency of 2 kHz, and is amplified to a predetermined level in the second amplifier 20 through the fourth to sixth attenuators 17-19 to be a signal combiner 21. Will send a signal.

In this way, the signal transmitted through the signal combiner 21 is radiated through the aerial, in which the fourth attenuator 17 limits the size of the signal emitted to the outside, and any signal size predetermined by the manufacturer before shipment of the product. Will set the signal strength.

In addition, the central processing unit 22 collects and analyzes all the information and transmits it to the display unit 23 so that the user can recognize it. The auxiliary power source 24 is provided so that the main power supply may be stopped at any time for several hours regardless of the place. You can carry and use.

The operation of the receiver 30 will be described below.

That is, the 800 MHz signal radiated from the transmitter 10 is input to the first isolator 31 through the aerial line, and the reverse feedback signal generated due to the mismatch between the aerial line and the signal separator 33 is forcibly matched. .

In addition, the signal applied to the first isolator 31 is transmitted to the attenuator 34 and the low noise amplifier 35 through the signal combiner 33 to amplify the weak signal introduced from the outside to the size of the signal that can be discriminated. .

At this time, the attenuator 34 functions to prevent equipment damage and widen the reception signal detection range due to the input of too large a signal from the outside.

That is, if the input signal is excessively large, the attenuator 34 operates to forcibly weaken the strength of the signal flowing into the rear end, thereby protecting the equipment, and compensating the central processing unit 45 as the signal strength is forcibly weakened. Therefore, a wider range of signal detection is possible.

This signal is introduced into the frequency synthesizer 38 and mixed with the frequencies generated by the first and second local oscillation frequency generators 36 and 37 to generate a third intermediate frequency.

Only the intermediate frequency generated in this way passes through the low frequency filter 39, and all further signals are limited to prevent transmission to the next stage.

In addition, the signal passing through the low frequency filter 39 is amplified to a predetermined level in the intermediate amplifier 40 so that only the corresponding frequency is selected from the surface elastic first and second filters 41 and 42 having high frequency selectivity. The other frequency is completely limited to apply a signal to the termination amplifier 43.

Therefore, the signal applied to the terminal amplifier 43 is detected by the detector 44 and transmitted to the central processing unit 45, the signal is displayed on the display unit so that the user can recognize under the control of the central processing unit 45 Mark in proper form.

Here, the process of detecting the magnitude of the signal by selecting a frequency of 2 kHz is as described in the receiver, but the second local oscillation frequency generator 37 generates an arbitrary frequency to generate the same intermediate frequency as above. There is only a difference.

When the user selects a desired frequency, the central processing unit 45 selects one of the first and second local oscillation frequencies to generate a frequency and does not emit an unwanted signal. In addition, the receiver 30 is also equipped with an auxiliary power source 47 so that the user can carry.

4 is a view illustrating a measurement process of aerial separation of a wireless communication device according to the present invention. The transmitter 10 is connected to the donor aerial line 50 to transmit a signal, and the receiver 33 is connected to the service aerial line 51. Select the signal transmitted from the transmitter 10 to inform the user of the strength of the received signal.

Therefore, the calculated value due to the loss generated between the donor aerial 50 and the service aerial 51 can be obtained, and based on the obtained information, the user adjusts the direction and position of the two aerials to select the aerial position as the most ideal condition. can do.

5 is a conceptual diagram showing a loss measurement of a coaxial cable for a wireless communication device installed in the basement of the building in the present invention, the reception aerial (2) is connected to the transmitter 10 used in the present invention and the basement coaxial cable end of the present invention It shows the state of connecting the receiver 30 used in, it is possible to easily measure the presence or absence of the abnormality of the coaxial cable or installed antenna installed in the underground space used to service the shadow area using a repeater.

As described above, the present invention measures the propagation loss by the feature of the space to be serviced before building various facilities by looking at the numerical value (dBm) displayed on the indicator while moving the portable receiver while the transmitter is connected to the aerial. It can be used as the location selection data of the equipment or antenna of the appropriate output required for the site, so that problems that can occur after construction can be predicted in advance, thereby minimizing the investment with the minimum facilities. .

In addition, the present invention is to check the strength of the shielding between the transmitting and receiving antennas and the normal operation of the coaxial cable or antenna even after the construction is small and light, free to move, as well as the space is not limited to measure the work time is shortened, etc. It has all the effects.

Claims (4)

In a device for measuring the radio wave environment and the separation between the transmitting and receiving aerials in the course of the country of the wireless communication device relaying the weak signal, and the device for determining whether the coaxial cable for the communication device installed in the underground building is operating normally, The transmitter is connected to the donor aerial and the receiver is connected to the service aerial to measure the separation of the transmission and reception aerial. It is configured to connect the transmitter for transmitting the signal of the predetermined frequency band to the receiving aerial and to measure the normal operation of the coaxial cable to be used by connecting the receiver to the end of the coaxial cable. A radio wave transmitting and receiving device for measuring a radio wave environment of a wireless communication device, characterized by displaying the radio wave environment and operation state information of the coaxial cable by using the measurement result. The method of claim 1, wherein the transmitter, A first local oscillation frequency generator generating 800 MHz, a first analog attenuator for controlling gain, a second and a third attenuator configured to be adjustable to an arbitrary signal intensity by the user, and amplifying the signal to a predetermined level A first amplifier, a second local oscillation frequency generator generating a frequency in the 2 kHz band, a fourth analog attenuator for controlling gain, a fifth and a sixth attenuator configured to be adjustable to an arbitrary signal strength by the user, and A second amplifier for amplifying the intensity to a predetermined level, a signal combiner for combining the signals of the first and second amplifiers, and a central processing unit for collecting and analyzing a series of information. An apparatus for transmitting and receiving radio waves for measuring a radio wave environment of a wireless communication device. The method of claim 1, wherein the receiver, Amplifying the strength of the weak signal through the first and second isolators, the attenuator for attenuating external strong signals, the attenuator for attenuating external strong signals due to non-matching of the aerial line and the signal separation period A low noise amplifier, a first local oscillation frequency generator for generating a local oscillation frequency, a frequency synthesizer for mixing the signals of the low noise amplifier and the first local oscillation frequency generator, and converting the signal to an intermediate frequency; A low frequency filter that passes only the intermediate frequency of the frequency generated from the second local oscillation frequency generator and limits the frequency below that; and a first and second surface elastic filter for selecting only a specific signal from the signal passed through the intermediate amplifier. And a terminal amplifier that amplifies to output a large signal, a detector that detects signal strength and informs the central processing unit, and controls all of the above processes. And a display unit for informing the user of the processed information signal and a central processing unit for monitoring the radio wave. The radio wave transmitting and receiving apparatus for measuring a radio wave environment of a wireless communication device according to claim 1, wherein an auxiliary power source capable of charging and discharging is installed in the transmitter and the receiver, respectively.

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