CN110444885A - A kind of antenna module, mobile phone, control method and electronic equipment - Google Patents
A kind of antenna module, mobile phone, control method and electronic equipment Download PDFInfo
- Publication number
- CN110444885A CN110444885A CN201910803435.2A CN201910803435A CN110444885A CN 110444885 A CN110444885 A CN 110444885A CN 201910803435 A CN201910803435 A CN 201910803435A CN 110444885 A CN110444885 A CN 110444885A
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- Prior art keywords
- antenna
- feeder line
- adjustment portion
- resistance adjustment
- input impedance
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephone Function (AREA)
Abstract
This application discloses a kind of antenna modules, comprising: antenna, including body part and resistance adjustment portion, the resistance adjustment portion are connect with the input terminal of the body part, the feeder line connection of the resistance adjustment portion and ground connection；Match circuit is configured to control the input impedance of the antenna by the link position for controlling the feeder line and the resistance adjustment portion, so that the difference of the input impedance and the characteristic impedance of the feeder line is in preset range.Match circuit is by adjusting link position (i.e. the position of the feed point of change antenna) of the feeder line with resistance adjustment portion, to change the feed point in resistance adjustment portion to the resistance value between antenna body, to change the resistance value (i.e. input impedance) of antenna entirety.By adjusting the input impedance of antenna, then the input impedance of antenna can be made identical as the characteristic impedance of feeder line as far as possible, to promote the radiation efficiency of antenna.
Description
Technical field
This application involves the technical field of wireless telecommunications system more particularly to a kind of antenna module, mobile phone, control method and
Electronic equipment.
Background technique
Transmitting antenna to be made matches with feeder line, and the input impedance of antenna should be equal to the characteristic impedance of feeder line.Antenna is defeated
Entering impedance may include reactance and resistance components simultaneously.In most of practical applications, that we seek is the impedance (z of purely resistive
=R), but this ideal situation is extremely difficult to.Such as a dipole antenna, when theoretically reaching resonance in vacuum impedance be
73Ω.But when the signal frequency being sent on antenna is not resonance frequency, reactive component (± jX) there have been.When being higher than
When resonance frequency, aerial band inductive reactance, impedance Z=R+jX.Similarly, when being lower than resonance frequency, aerial band capacitive electricity
It is anti-, impedance z=R-jX.In addition, resistive portion may not be 73 Ω in the space close to earth's surface, and may for 30~
The a certain value of 130 Ω.
Obviously, no matter selecting characteristic impedance is how many coaxial cables, is all likely to be inappropriate.Actual radio
In, in order to which a complex load (such as antenna) to be connected on a purely resistive source, the most common situation is in load and source
Between construct a matching network.The impedance of matching network is necessarily equal to the conjugation of the complex impedance of load.For example, if load resistance
Resist for R+jX, the impedance of matching network is just necessary for mono- jX of R；Similarly, if load impedance is mono- jX of R, the resistance of matching network
It is anti-to be just necessary for R+jX.Although above-mentioned modulation work is preferable at effect, this matching process is complex, implements cost
It is higher.
Apply for content
The application provides a kind of antenna module, mobile phone, control method and electronic equipment, can adjust the input electricity of antenna
Resistance promotes the matching degree of antenna and feeder line.
According to the one aspect of the application, a kind of antenna module is provided, comprising:
Antenna, including body part and resistance adjustment portion, the resistance adjustment portion are connect with the input terminal of the body part,
The connection of the feeder line of the resistance adjustment portion and ground connection；
Match circuit is configured to control the day by the link position for controlling the feeder line and the resistance adjustment portion
The input impedance of line, so that the difference of the input impedance and the characteristic impedance of the feeder line is in preset range.
According to some embodiments, the resistance adjustment portion has multiple feed points, and each feed point connects one to one institute
State feeder line；
The match circuit is configured to control the input impedance of the antenna by the on-off for controlling each feeder line.
According to some embodiments, the match circuit includes electronic switch identical with the quantity of the feeder line, Mei Gesuo
State the on-off of electronic switch one feeder line of corresponding control.
According to some embodiments, the resistance adjustment portion is connected with sliding part, and the sliding part can be along the resistance adjustment
The length direction in portion slides, and the feeder line is connect with the sliding part；
The match circuit is configured to can control sliding position of the sliding part in the resistance adjustment portion, to control
Make the input impedance of the antenna.
According to some embodiments, sliding position continuity variation of the sliding part in the resistance adjustment portion.
According to some embodiments, the resistance adjustment portion is wholely set with the body part.
The application second aspect additionally provides a kind of mobile phone, including
Antenna, including body part and resistance adjustment portion, the resistance adjustment portion are connect with the input terminal of the body part,
The connection of the feeder line of the resistance adjustment portion and ground connection；
Match circuit is configured to control the day by the link position for controlling the feeder line and the resistance adjustment portion
The input impedance of line, so that the difference of the input impedance and the characteristic impedance of the feeder line is in preset range.
According to some embodiments, the mobile phone further includes display panel, and the display panel includes display base plate, the day
Line component is integrated in the non-display area of the display base plate.
According to some embodiments, the resistance adjustment portion has multiple feed points, and each feed point connects one to one institute
State feeder line；
The match circuit is configured to control the input impedance of the antenna by the on-off for controlling each feeder line；
The match circuit includes electronic switch identical with the quantity of the feeder line, and each electronic switch is corresponding
Control the on-off of a feeder line.
According to some embodiments, the electronic switch is transistor, and the transistor controls its on-off by gate control lines.
The application third aspect additionally provides a kind of control method of antenna, comprising:
Obtain the characteristic impedance of feeder line；
The input impedance for obtaining antenna under current state, judge the input impedance and the characteristic impedance difference whether
In preset range；
When the difference of the input impedance and the characteristic impedance is not in preset range, the feeder line and institute are adjusted
The position of the tie point of antenna is stated, and monitors the variation of the input impedance of the antenna；
When the input impedance of the antenna is adjusted in the preset range, stop adjusting the feeder line with it is described
The step of position of the tie point of antenna.
The application fourth aspect additionally provides a kind of electronic equipment with antenna, including memory, processor and storage
On a memory and the computer program that can run on a processor, the processor realize institute when executing the computer program
The adjusting method stated.
The application provides a kind of antenna module, and the antenna in the component has resistance adjustment portion, and match circuit passes through adjusting
The link position (i.e. the position of the feed point of change antenna) of feeder line and resistance adjustment portion, so that the feed point for changing resistance adjustment portion arrives
Resistance value between antenna body, to change the resistance value (i.e. input impedance) of antenna entirety.By the input for adjusting antenna
Impedance can then make the input impedance of antenna identical as the characteristic impedance of feeder line as far as possible, to promote the radiation effect of antenna
Rate.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those skilled in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram according to the antenna module in a kind of embodiment of the application；
Fig. 2 is the structural schematic diagram according to the antenna module in the application another kind embodiment；
Fig. 3 is the structural schematic diagram according to the PIFA antenna in a kind of embodiment of the application；
Fig. 4 is the schematic front view according to the mobile phone in a kind of embodiment of the application；
Fig. 5 is the schematic front view according to the display panel of the mobile phone in a kind of embodiment of the application；
Fig. 6 is the flow chart according to the control method in a kind of embodiment of the application.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, and
It is not used in restriction the application.
The junction of antenna 110 and feeder line 120 is known as the input terminal or feed point 121 of antenna 110.For antenna 110,
The voltage of 110 input terminal of antenna and the ratio of electric current are known as the input impedance of antenna 110.For mouth planar antenna 110, then commonly use
Voltage standing wave ratio indicates the impedance operator of antenna 110 on feeder line 120.Generally, the input impedance of antenna 110 is plural number, real part
Referred to as input resistance is indicated with Ri；Imaginary part is known as input reactance, is indicated with Xi.Since the actual input impedance of antenna 110 changes
It is larger, therefore it is difficult to match with the characteristic impedance of feeder line 120.
A kind of antenna module is present embodiments provided, which can be set on arbitrary wireless telecommunications system,
To receive or transmit signal.Antenna module in the present embodiment includes antenna 110 and match circuit 130, match circuit 130
The characteristic impedance that the size of the input impedance of antenna 110 can be adjusted and input impedance is made to be equal to feeder line 120 as far as possible.
Antenna 110 includes body part 111 and resistance adjustment portion 112, the input in resistance adjustment portion 112 and body part 111
End connection, resistance adjustment portion 112 are connect with the feeder line 120 of ground connection.The tie point of resistance adjustment portion 112 and feeder line 120 is day
The feed point 121 of line 110.When the change in location of feeder line 120 and the tie point in resistance adjustment portion 112, the whole ground connection of antenna 110
Position also accordingly changes, and input impedance will also change.
Match circuit 130 is configured to control antenna by the link position of control feeder line 120 and resistance adjustment portion 112
110 input impedance, so that at the difference of input impedance and the characteristic impedance (generally 75 ohm or 50 ohm) of feeder line 120
In in preset range.Position i.e. by adjusting the tie point of feeder line 120 and resistance adjustment portion 112, it can adjust resistance tune
The real work part in section portion 112, and then adjust the whole input impedance of antenna 110.By the change for monitoring input impedance in real time
Change situation, when the difference of input impedance and the characteristic impedance of feeder line 120 is in preset range, then can stop adjusting feeder line
120 with the tie point position in resistance adjustment portion 112.Under optimal state, match circuit 130 can make the input of antenna 110
Impedance is equal to the characteristic impedance of feeder line 120.
Using above-mentioned antenna module carry out input impedance adjustment process it is as follows: first obtain feeder line 120 characteristic impedance with
And under current state antenna 110 input impedance, judge whether the difference of input impedance and characteristic impedance is in preset range.
When the difference of input impedance and characteristic impedance is not in preset range, the connection of feeder line 120 and resistance adjustment portion 112 is adjusted
The position of point, so that the change in location of the feed point 121 of antenna 110, and then input impedance changes.Monitor the defeated of antenna 110
Enter the situation of change of impedance.When the input impedance of antenna 110 is adjusted in preset range, stop adjust feeder line 120 with
The step of position of the tie point of antenna 110.
The difference of input impedance and characteristic impedance be not at preset range can according to actual needs depending on.Work as preset range
When bigger, the adjusted result of final antenna 110 precisely, does not cause input impedance low with the matching degree of characteristic impedance.When default
Range is got over hour, and the adjusted result of final antenna 110 is more accurate, keeps the matching degree of input impedance and characteristic impedance high.For example, working as
When preset range is (- 3 Ω ,+3 Ω), if the characteristic impedance of feeder line 120 is 50 Ω, when input impedance is adjusted to (47 Ω,
53 Ω) in any number, such as 48 Ω, 50 Ω or 51 Ω, it can be seen that input impedance meets sets requirement.When default model
When enclosing for (- 0.1 Ω ,+0.1 Ω), if the characteristic impedance of feeder line 120 is 50 Ω, input impedance be adjusted to (49.9 Ω,
50.1 Ω) in any number, such as 49.98 Ω, 50 Ω or 50.09 Ω can think that input impedance meets sets requirement.
It can be used for offsetting the frequency of antenna 110 for input impedance to the regulating step of input impedance in the present embodiment
Influence.When the variation of the frequency of antenna 110, input impedance changes, so that input impedance and the feeder line of antenna 110
120 characteristic impedance mismatches.Therefore the position of the feed point 121 in resistance adjustment portion 112 can be controlled using match circuit 130 immediately
It sets to adjust the size of input resistance, influence to input resistance is changed to offset 110 frequency of antenna with this.
The position of feed point 121 in resistance adjustment portion 112 is adjusted can be adjusted for continuity or stage is adjusted.
When adjusting for stage, as shown in Figure 1, resistance adjustment portion 112 can have multiple feed points 121 simultaneously, each feed point 121 is uniform
One is correspondingly connected with the feeder line 120 of ground connection.Match circuit 130 is configured to control antenna 110 by the on-off for controlling each feeder line 120
Input impedance.I.e. match circuit 130 only controls one of feeder line 120 and is connected, and is turned off other feeder lines 120.When
When controlling the different conductings of feeder line 120 with circuit 130, it is equivalent to the tie point for changing resistance adjustment portion 112 and feeder line 120
Position, changes the position of the grounding point of antenna 110, and then changes the whole input impedance of antenna 110.Specifically, it matches
Circuit 130 may include electronic switch identical with the quantity of feeder line 120, each electronic switch one feeder line of corresponding control
120 on-off.
When the position of the feed point 121 in resistance adjustment portion 112 is that continuity is adjusted, as shown in Fig. 2, resistance adjustment portion
112 can connect sliding part 113, and sliding part 113 can be slided along the length direction in resistance adjustment portion 112, feeder line 120 and sliding
Portion 113 connects.Match circuit 130 is configured to controllable sliding position of the sliding part 113 in resistance adjustment portion 112, to control
The input impedance of antenna 110 processed.Sliding process of the sliding part 113 in resistance adjustment portion 112 is continuous, therefore it is for antenna
The adjustment process of 110 input impedance is also continuous.When making the defeated of antenna 110 to the adjustment process consecutive hours of input impedance
It is bigger to enter a possibility that impedance is equal to the characteristic impedance of feeder line 120.
Resistance adjustment portion 112 can be wholely set with body part 111, i.e., resistance adjustment portion 112 can be with body part 111
The part of one entirety, the close feed point 121 of antenna 110 is known as resistance adjustment portion 112.Certainly, in order to make the input of antenna 110
The adjustable range of resistance is wider, resistance adjustment portion 112 can also be made to be made of the higher material of resistance value, so that feeder line
120 with the change in location of the tie point in resistance adjustment portion 112 when, the changing value of the input impedance of antenna 110 is bigger.When in order to make
When the adjusting of the input resistance of antenna 110 is finer, resistance adjustment portion 112 can also be made by the lower material system of resistance value
At, so that when the change in location of feeder line 120 and the tie point in resistance adjustment portion 112, the variation of the input impedance of antenna 110
It is worth smaller.
Antenna 110 in the present embodiment is specifically as follows PIFA (Planar Inverted-F Antenna) antenna 110,
And it can be arranged in mobile phone 100 as shown in Figure 4.In the embodiment of the present application, mobile phone 100 may include radio circuit,
Memory, input unit, Wireless Fidelity (WiFi, wireless fidelity) module, display unit, sensor, audio-frequency electric
The components such as road, processor, projecting cell, shooting unit, battery.
Radio circuit can be used for receive and send messages or communication process in, signal sends and receivees, particularly, by base station
After downlink information receives, processor processing is given；In addition, the data of 100 uplink of mobile phone are sent to base station.In general, radio circuit
Including but not limited to antenna 110, at least one amplifier, transceiver, coupler, low-noise amplifier, duplexer etc..This
Outside, radio circuit can also be communicated with network and other equipment by wireless communication.Above-mentioned wireless communication can be used any logical
Beacon standard or agreement, including but not limited to global system for mobile communications (GSM, Global System for Mobile
Communication), general packet radio service (GPRS, General Packet Radio Service), CDMA
(CDMA, Code Division Multiple Access), wideband code division multiple access (WCDMA, Wideband Code
Division Multiple Access), long term evolution (LTE, Long Term Evolution), Email, short message clothes
Be engaged in (SMS, Short Messaging Service) etc..
Wherein, memory can be used for storing software program and module, and processor is stored in the soft of memory by operation
Part program and module, thereby executing the various function application and data processing of mobile phone 100.Memory can mainly include storage
Program area and storage data area, wherein storing program area can application program needed for storage program area, at least one function
(such as sound-playing function, image player function) etc.；Storage data area, which can be stored, uses created number according to mobile phone 100
According to (such as audio data, phone directory) etc..In addition, memory may include high-speed random access memory, it can also include non-
Volatile memory, for example, at least a disk memory, flush memory device or other volatile solid-state parts.
Input unit can be used for receiving the number or character information of input, and generate with the user setting of mobile phone 100 with
And the related key signals of function control.Specifically, input unit may include touch panel and other input equipments.Touch surface
Plate, also referred to as touch screen, collecting the touch operation of user on it or nearby, (for example user is any using finger, stylus etc.
Operation of the suitable object or attachment on touch panel or near touch panel), and driven according to preset formula
Corresponding attachment device.Optionally, touch panel may include both touch detecting apparatus and touch controller.Wherein, it touches
The touch orientation of detection device detection user is touched, and detects touch operation bring signal, transmits a signal to touch controller；
Touch controller receives touch information from touch detecting apparatus, and is converted into contact coordinate, then gives processor, and energy
It receives the order that processor is sent and is executed.Furthermore, it is possible to using resistance-type, condenser type, infrared ray and surface acoustic wave
Equal multiple types realize touch panel.In addition to touch panel, input unit can also include other input equipments.Specifically,
His input equipment can include but is not limited to physical keyboard, key (such as volume control button, switch key etc.), trace ball,
One of mouse, operating stick etc. are a variety of.
Wherein, display unit can be used for showing information input by user or be supplied to the information and mobile phone 100 of user
Various menus.Display unit may include display panel, optionally, can use liquid crystal display (LCD, Liquid
Crystal Display), the forms such as Organic Light Emitting Diode (OLED, Organic Light-Emitting Diode) match
Set display panel.Further, touch panel can cover display panel, when touch panel detects touch on it or nearby
After operation, processor is sent to determine the type of touch event, is followed by subsequent processing device according to the type of touch event in display surface
Corresponding visual output is provided on plate.
Wherein, the position in the outer display panel of the visual output which can identify, can be used as aftermentioned " viewing area
Domain ".Mobile phone 100 can be realized using touch panel and display panel as two independent components outputs and inputs function,
Can also be integrated by touch panel and display panel and that realizes mobile phone 100 output and input function.
In addition, mobile phone 100 may also include at least one sensor, such as attitude transducer, optical sensor and other biographies
Sensor.
Specifically, attitude transducer is referred to as motion sensor, also, one kind as the motion sensor, can
To enumerate gravity sensor, cantilevered shifter is made using elastic sensing element in gravity sensor, and using the sensitive member of elasticity
Energy-stored spring made of part drives electric contact, to realize the variation that Gravity changer is converted into electric signal.
As the another kind of motion sensor, accelerometer sensor can be enumerated, accelerometer sensor can detect all directions
Upper (generally three axis) acceleration magnitude, can detect that size and the direction of gravity, can be used to identify 100 posture of mobile phone when static
Application (such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (for example pedometer, strikes
Hit) etc..
Can be using motion sensor listed above as aftermentioned " attitude parameter " element of acquisition, but be not limited to
This, other sensors that can obtain " attitude parameter " are fallen within the protection scope of the present invention, for example, gyroscope etc., also,
The working principle and data handling procedure of the gyroscope can be similar to the prior art, here, in order to avoid repeating, omit it in detail
It describes in detail bright.
In addition, can also configure other sensings such as barometer, hygrometer, thermometer and infrared sensor as sensor
Device, details are not described herein.
Optical sensor may include ambient light sensor and proximity sensor, wherein ambient light sensor can be according to environment light
The light and shade of line adjusts the brightness of display panel, and proximity sensor can close display panel when mobile phone 100 is moved in one's ear
And/or backlight.
Voicefrequency circuit, loudspeaker and microphone can provide the audio interface between user and mobile phone 100.Voicefrequency circuit can incite somebody to action
Electric signal after the audio data conversion received, is transferred to loudspeaker, is converted to voice signal output by loudspeaker；Another party
The voice signal of collection is converted to electric signal by face, microphone, is converted to audio data after being received by voicefrequency circuit, then by audio
After the processing of data output processing device, it is sent to such as another mobile phone 100 through radio circuit, or audio data is exported to depositing
Reservoir is to be further processed.
WiFi belongs to short range wireless transmission technology, and mobile phone 100 can help user's transceiver electronics postal by WiFi module
Part, browsing webpage and access streaming video etc., it provides wireless broadband internet access for user.
Processor is the control centre of mobile phone 100, utilizes each portion of various interfaces and connection whole mobile phone 100
Point, by running or executing the software program and/or module that are stored in memory, and the number that calling is stored in memory
According to the various functions and processing data of execution mobile phone 100, to carry out integral monitoring to mobile phone 100.Optionally, processor can
Including one or more processing units；Preferably, processor can integrate application processor and modem processor, wherein answer
With the main processing operation system of processor, user interface and application program etc., modem processor mainly handles wireless communication.
It is understood that above-mentioned modem processor can not also be integrated into the processor.
Also, the processor can be used as the realization element of above-mentioned processing unit, execute same or similar with processing unit
Function.
Mobile phone 100 further includes the power supply (such as battery) powered to all parts.
Power supply can be logically contiguous with processor by power-supply management system, manages to be realized by power-supply management system
The functions such as charging, electric discharge and power managed.Although being not shown, mobile phone 100 can also be including bluetooth module etc., herein no longer
It repeats.
As shown in figure 5, mobile phone includes display panel 150 in a kind of embodiment, display panel 150 includes display base plate
151, display base plate has non-display area 152, and the antenna module of mobile phone is integrated in the non-display area 152 of display panel 150.With phase
Antenna module is welded on the driving pcb board of display device in the technology of pass and is compared, antenna module is arranged in the present embodiment
The non-display area 152 of the display base plate 151 of display panel 150, thus antenna module will not additional occupied space again, may make
The thickness of display device is smaller than the thickness of existing display device.In addition, the non-aobvious of display base plate 151 is arranged in antenna module
Show area 152, in this way, antenna module, in electromagnetic signals, electromagnetic wave signal is without the viewing area for needing guiding through display screen, thus
Electromagnetic wave signal not will receive the metal routing of display screen viewing area at blocking and shield.Therefore, on the one hand above structure can subtract
On the other hand the thickness of small display device can avoid the electromagnetic wave that the metal routing of display screen viewing area emits antenna module
Signal interferes and decays.
Specifically, the PIFA antenna 110 (Planar Inverted-F Antenna) of mobile phone 100 can specifically include this
Body portion 111 and resistance adjustment portion 112, resistance adjustment portion 112 are connect with the input terminal of body part 111, resistance adjustment portion 112 with
The feeder line 120 of ground connection connects.The tie point of resistance adjustment portion 112 and feeder line 120 is the feed point 121 of antenna 110.Work as feeder line
120 with the change in location of the tie point in resistance adjustment portion 112 when, the whole earthing position of antenna 110 also accordingly changes,
Input resistance value will also change.
Match circuit 130 is configured to control antenna by the link position of control feeder line 120 and resistance adjustment portion 112
110 input impedance, so that at the difference of input impedance and the characteristic impedance (generally 75 ohm or 50 ohm) of feeder line 120
In in preset range.Position i.e. by adjusting the tie point of feeder line 120 and resistance adjustment portion 112, it can adjust resistance tune
The real work part in section portion 112, and then adjust the whole input impedance of antenna 110.By the change for monitoring input impedance in real time
Change situation, when the difference of input impedance and the characteristic impedance of feeder line 120 is in preset range, then can stop adjusting feeder line
120 with the tie point position in resistance adjustment portion 112.Under optimal state, match circuit 130 can make the input of antenna 110
Impedance is equal to the characteristic impedance of feeder line 120.
Using above-mentioned antenna module carry out input impedance adjustment process it is as follows: first obtain feeder line 120 characteristic impedance with
And under current state antenna 110 input impedance, judge whether the difference of input impedance and characteristic impedance is in preset range.
When the difference of input impedance and characteristic impedance is not in preset range, the connection of feeder line 120 and resistance adjustment portion 112 is adjusted
The position of point, so that the change in location of the feed point 121 of antenna 110, and then input impedance changes.Monitor the defeated of antenna 110
Enter the situation of change of impedance.When the input impedance of antenna 110 is adjusted in preset range, stop adjust feeder line 120 with
The step of position of the tie point of antenna 110.
It can be used for offsetting the frequency of antenna 110 for input impedance to the regulating step of input impedance in the present embodiment
Influence.When the variation of the frequency of antenna 110, input impedance changes, so that input impedance and the feeder line of antenna 110
120 characteristic impedance mismatches.Therefore the position of the feed point 121 in resistance adjustment portion 112 can be controlled using match circuit 130 immediately
It sets to adjust the size of input resistance, influence to input resistance is changed to offset 110 frequency of antenna with this.
The position of feed point 121 in resistance adjustment portion 112 is adjusted can be adjusted for continuity or stage is adjusted.
When adjusting for stage, resistance adjustment portion 112 can have multiple feed points 121 simultaneously, and each feed point 121 connects one to one
The feeder line 120 of ground connection.Match circuit 130 is configured to control the input resistance of antenna 110 by the on-off for controlling each feeder line 120
It is anti-.I.e. match circuit 130 only controls one of feeder line 120 and is connected, and is turned off other feeder lines 120.When match circuit 130
When controlling the different conductings of feeder line 120, it is equivalent to the position for changing the tie point in resistance adjustment portion 112 and feeder line 120, is changed
The position of the grounding point of antenna 110, and then change the whole input impedance of antenna 110.Specifically, match circuit 130 can
To include electronic switch identical with the quantity of feeder line 120, the on-off of each electronic switch one feeder line 120 of corresponding control.
As shown in figure 3, electronic switch is specifically as follows TFT131 (thin film transistor (TFT)), the feeder line of each TFT131 and ground connection
Then 120 parallel connections are connect with each feeder line 120 respectively.By the gate control lines 132 being connect with each TFT131, to regulate and control TFT131
Switch, to realize the selection of 110 feed point 121 of antenna.Wherein, an only feed point 121 is on feeder line 120 every time
State, remaining feed point 121 are in off-state, can be made by selecting some feed point 121 of different location to carry out conducting
Antenna 110 is corresponding to have different input impedances.
As shown in fig. 6, the control method is used present invention also provides a kind of control method of the input impedance of antenna 110
In adjust antenna 110 input impedance, and by way of adjusting 110 input impedance of antenna compensate 110 frequency of antenna for
The influence of input impedance.The control method includes:
S102: the characteristic impedance of feeder line 120 is obtained.
S104: obtaining the input impedance of antenna 110 under current state, judge input impedance and characteristic impedance difference whether
In preset range.
S106: when the difference of input impedance and characteristic impedance is not in preset range, feeder line 120 and antenna are adjusted
The position of 110 tie point, and monitor the variation of the input impedance of antenna 110.
S108: when the input impedance of antenna 110 is adjusted in preset range, stop adjusting feeder line 120 and antenna
The step of position of 110 tie point.
Present invention also provides a kind of electronic equipment with antenna 110, the electronic equipment include memory, processor and
The computer program that can be run on a memory and on a processor is stored, processor is realized above-mentioned when executing computer program
Adjusting method.Specifically, which may include the mobile device that mobile phone 100, plate etc. have antenna 110.
The same or similar label correspond to the same or similar components in the attached drawing of the present embodiment；In the description of the present application
In, it is to be understood that if there is the orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right" for based on attached drawing institute
The orientation or positional relationship shown is merely for convenience of description the application and simplifies description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore describe the use of positional relationship in attached drawing
Language only for illustration, should not be understood as the limitation to this patent, for the ordinary skill in the art, can be with
The concrete meaning of above-mentioned term is understood as the case may be.
The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application
Made any modifications, equivalent replacements, and improvements etc., should be included within the scope of protection of this application within mind and principle.
Claims (12)
1. a kind of antenna module characterized by comprising
Antenna, including body part and resistance adjustment portion, the resistance adjustment portion is connect with the input terminal of the body part, described
The connection of the feeder line of resistance adjustment portion and ground connection；
Match circuit is configured to control the antenna by the link position for controlling the feeder line and the resistance adjustment portion
Input impedance, so that the difference of the input impedance and the characteristic impedance of the feeder line is in preset range.
2. antenna module as described in claim 1, which is characterized in that
The resistance adjustment portion has multiple feed points, and each feed point connects one to one the feeder line；
The match circuit is configured to control the input impedance of the antenna by the on-off for controlling each feeder line.
3. antenna module as claimed in claim 2, which is characterized in that
The match circuit includes electronic switch identical with the quantity of the feeder line, the corresponding control of each electronic switch
The on-off of one feeder line.
4. antenna module as described in claim 1, which is characterized in that
The resistance adjustment portion is connected with sliding part, and the sliding part can be slided along the length direction in the resistance adjustment portion, institute
Feeder line is stated to connect with the sliding part；
The match circuit is configured to can control sliding position of the sliding part in the resistance adjustment portion, to control institute
State the input impedance of antenna.
5. antenna module as claimed in claim 4, which is characterized in that
Sliding position continuity variation of the sliding part in the resistance adjustment portion.
6. antenna module as described in claim 1, which is characterized in that
The resistance adjustment portion is wholely set with the body part.
7. a kind of mobile phone, which is characterized in that including
Antenna, including body part and resistance adjustment portion, the resistance adjustment portion is connect with the input terminal of the body part, described
The connection of the feeder line of resistance adjustment portion and ground connection；
Match circuit is configured to control the antenna by the link position for controlling the feeder line and the resistance adjustment portion
Input impedance, so that the difference of the input impedance and the characteristic impedance of the feeder line is in preset range.
8. mobile phone as claimed in claim 7, which is characterized in that
The mobile phone further includes display panel, and the display panel includes display base plate, and the antenna module is integrated in described aobvious
Show the non-display area of substrate.
9. mobile phone as claimed in claim 8, which is characterized in that
The resistance adjustment portion has multiple feed points, and each feed point connects one to one the feeder line；
The match circuit is configured to control the input impedance of the antenna by the on-off for controlling each feeder line；
The match circuit includes electronic switch identical with the quantity of the feeder line, the corresponding control of each electronic switch
The on-off of one feeder line.
10. mobile phone as claimed in claim 9, which is characterized in that
The electronic switch is transistor, and the transistor controls its on-off by gate control lines.
11. a kind of control method of antenna characterized by comprising
Obtain the characteristic impedance of feeder line；
The input impedance for obtaining antenna under current state, judges whether the input impedance and the difference of the characteristic impedance are in
In preset range；
When the difference of the input impedance and the characteristic impedance is not in preset range, the feeder line and the day are adjusted
The position of the tie point of line, and monitor the variation of the input impedance of the antenna；
When the input impedance of the antenna is adjusted in the preset range, stop adjusting the feeder line and the antenna
Tie point position the step of.
12. a kind of electronic equipment with antenna, including memory, processor and storage are on a memory and can be on a processor
The computer program of operation, which is characterized in that the processor is realized when executing the computer program such as claim 11 institute
The control method stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910803435.2A CN110444885A (en) | 2019-08-28 | 2019-08-28 | A kind of antenna module, mobile phone, control method and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910803435.2A CN110444885A (en) | 2019-08-28 | 2019-08-28 | A kind of antenna module, mobile phone, control method and electronic equipment |
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| Publication Number | Publication Date |
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| CN110444885A true CN110444885A (en) | 2019-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910803435.2A Pending CN110444885A (en) | 2019-08-28 | 2019-08-28 | A kind of antenna module, mobile phone, control method and electronic equipment |
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| CN113809529A (en) * | 2021-08-03 | 2021-12-17 | 北京邮电大学 | Dual-band impedance matching microstrip antenna and antenna array |
| CN113871948A (en) * | 2021-09-27 | 2021-12-31 | 青岛海信移动通信技术股份有限公司 | Terminal device |
| CN115498399A (en) * | 2021-06-18 | 2022-12-20 | Oppo广东移动通信有限公司 | Antenna assembly, electronic equipment and wearable equipment |
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Application publication date: 20191112 |
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