CN109039397A - A kind of antenna circuit of mobile terminal, control method and device - Google Patents
A kind of antenna circuit of mobile terminal, control method and device Download PDFInfo
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- CN109039397A CN109039397A CN201810863117.0A CN201810863117A CN109039397A CN 109039397 A CN109039397 A CN 109039397A CN 201810863117 A CN201810863117 A CN 201810863117A CN 109039397 A CN109039397 A CN 109039397A
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- antenna
- switching switch
- circuit
- control
- mobile terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/006—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
Abstract
The present invention provides a kind of antenna circuit of mobile terminal, control method and device, which includes: at least two antennas, wherein each antenna is connected separately with an antenna tuner；Radio circuit is electrically connected with the first antenna at least two antennas；Power detection module is connect with radio circuit；Receiving path, each second antenna at least two antennas in addition to first antenna passes through switching switch and is connected to receiving path, and each switching is switched and connect with power detection module；Controller is separately connected with power detection module and antenna tuner.Therefore, the solution of the present invention, solving the problems, such as between multiple antennas that isolation is too low causes antenna efficiency poor.
Description
Technical field
The present invention relates to mobile communication technology field more particularly to a kind of antenna circuit of mobile terminal, control method and
Device.
Background technique
The frequency range that mobile phone terminal need to be supported at present is increasing.Therefore, in order to improve antenna efficiency, big multiple terminals, which uses, to be divided
Antenna technology, so that antenna amount be caused to increase.In addition, with the continuous evolution and iteration of the communication technology, Multiple Input Multiple Output
(Multiple-Input Multiple-Output, abbreviation MIMO) is gradually introduced commercialization, and terminal supports that MIMO technology is even more to lead
Stream trend, the 4X4MIMO from 2X2MIMO to mainstream, or arrive N X N MIMO below.
Wherein, the fixation of terminal form decides that a day space of lines is restricted, so that intensive antenna distribution causes
A series of problems, such as the too low influence antenna efficiency of isolation between mimo antenna, isolation between antennas is poorer, then the interradius of antenna
It is stronger to penetrate the ability that energy mutually absorbs；For another example isolation is too low between main radio frequency and WIFI antenna causes mutual interference problem
Deng to influence entire antenna system working efficiency.
Summary of the invention
The embodiment provides a kind of antenna circuits of mobile terminal, control method and device, to solve more days
The too low problem for causing antenna efficiency poor of isolation between line.
In a first aspect, the embodiment provides a kind of antenna circuits of mobile terminal, comprising:
At least two antennas, wherein each antenna is connected separately with an antenna tuner；
Radio circuit, the radio circuit are electrically connected with the first antenna at least two antenna；
Power detection module is connect with the radio circuit, for obtaining the transmitting when first antenna transmitting signal
Power；
Receiving path, each second antenna at least two antenna in addition to the first antenna pass through all
It changes switch and is connected to the receiving path, and each switching switch is connect with the power detection module；The switching
Switch includes so that first state that second antenna is connected to the receiving path and making second antenna and institute
State the second state of power detection module connection；When switching switch is in second state, examined by the power
It surveys module and obtains the reception power on second antenna；
Controller is electrically connected with the power detection module and the antenna tuner, for according to the power
The transmission power for the first antenna that detection module obtains and the reception power of at least 1 second antenna, calculating described the
Isolation between one antenna and corresponding second antenna, and according to the isolation control the first antenna and/or
The antenna tuner that corresponding second antenna is connected carries out circuit impedance adjusting.
Second aspect, the embodiment provides a kind of control methods of antenna circuit, applied to described above
Antenna circuit, which comprises
Switching switch output first control signal on the second antenna described at least one, controlling the switching switch is in
Second state；
Second control signal is exported to the first antenna, controls the first antenna transmitting signal.
The third aspect, the embodiment provides a kind of control devices of antenna circuit, applied to described above
Antenna circuit, described device include:
First control module exports first control signal for the switching switch on the second antenna described at least one,
The switching switch is controlled in second state；
Second control module controls the first antenna transmitting for exporting second control signal to the first antenna
Signal.
The beneficial effect of the embodiment of the present invention is:
The embodiment of the present invention can detecte out transmitting function when first antenna emits signal by power detection module
Rate, and by controlling each switching switch so that the access between the second antenna and power detection module is connected, to pass through function
Rate detection module detects reception power when at least one second antenna receives signal, and then by controller according to transmission power
And it receives power calculation and obtains the isolation between first antenna the second antenna corresponding with the reception power, and then according to isolation
Degree adjusts antenna tuner.It follows that the embodiment of the present invention, is able to detect between first antenna and any second antenna
Isolation mitigates mutual interference to weaken the degree that influences each other between first antenna and any second antenna, into
And solving the problems, such as between multiple antennas that isolation is too low causes antenna efficiency poor.
Detailed description of the invention
Fig. 1 shows one of circuit theory schematic diagrams of antenna circuit of mobile terminal provided in an embodiment of the present invention；
Fig. 2 indicates the baseband signal flow chart in Fig. 1；
Fig. 3 indicates the two of the circuit theory schematic diagram of the antenna circuit of mobile terminal provided in an embodiment of the present invention；
Fig. 4 indicates the flow chart of the control method of antenna circuit provided in an embodiment of the present invention；
Fig. 5 indicates a kind of one of the module diagram of mobile terminal provided in an embodiment of the present invention；
Fig. 6 indicates the two of the module diagram of a kind of mobile terminal provided in an embodiment of the present invention；
Fig. 7 indicates a kind of hardware structural diagram of mobile terminal provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
The embodiment provides a kind of antenna circuits of mobile terminal, as shown in Figure 1, the antenna of the mobile terminal
Circuit includes:
At least two antennas, wherein each antenna is connected separately with an antenna tuner；
Radio circuit, the radio circuit are electrically connected with the first antenna 101 at least two antenna；
Power detection module is connect with the radio circuit, for obtaining the hair when first antenna 101 emits signal
Penetrate power；
Receiving path, each second antenna 102 at least two antenna in addition to the first antenna 101 are logical
It crosses a switching switch and is connected to the receiving path, and each switching switch is connect with the power detection module；Institute
Stating switching switch includes so that first state that second antenna 102 is connected to the receiving path and making described second
The second state that antenna 102 is connected to the power detection module；When switching switch is in second state, pass through
The power detection module obtains the reception power on second antenna 102；
Controller is electrically connected with the power detection module and the antenna tuner, for according to the power
The transmission power for the first antenna that detection module obtains and the reception power of at least 1 second antenna, calculating described the
Isolation between one antenna and corresponding second antenna, and according to the isolation control the first antenna and/or
The antenna tuner that corresponding second antenna is connected carries out circuit impedance adjusting.
It can be seen from the above, on the one hand the signal is launched by first antenna 101, a side when radio circuit emits signal
Face ingoing power detection module, to detect the transmission power of first antenna by power detection module.Wherein, first antenna
101 power launched can be received by other antennas (i.e. the second antenna 102).And when switching switch by the second antenna 102 with
When access between power detection module is connected, then can detecte by power detection module to the reception function on the second antenna 102
Rate.To, according to the transmission power of first antenna and the reception power of the second antenna, calculate first antenna and second by controller
Isolation between antenna.
Wherein, the access between each second antenna 102 and power detection module can pass through control switching switch
It sequentially turns on, so the embodiment of the present invention can detecte the isolation between first antenna and any one second antenna, from
And antenna tuner is adjusted according to isolation, to optimize the isolation between antenna, i.e. interacting between reduction antenna, subtract
Light mutual interference, and then the performance of the antenna system of mobile terminal is promoted, promote the usage experience of user.
Further, the controller is used to calculate the first antenna and wherein one described second day according to following manner
Isolation between line:
Δ P (i)=Pt-Pr (i)；
Wherein, Δ P (i) indicates the isolation between the first antenna and i-th of second antenna, described in Pt expression
The transmission power of first antenna, Pr (i) indicate the reception power on i-th of second antenna.
That is the difference of the transmission power of first antenna and the reception power on one of them second antenna, as first antenna with
Isolation between second antenna.
In addition, controlling the first antenna and/or the corresponding second antenna institute according to the isolation in controller
During the antenna tuner of connection carries out circuit impedance adjusting, controller is particularly used in:
The isolation obtained will be calculated to compare with preparatory gating limit value, when the isolation is less than described preset
When threshold value, then controls the first antenna and/or the antenna tuner that corresponding second antenna is connected carries out
The adjusting of circuit impedance.
I.e. when the isolation between first antenna and any one second antenna is less than predetermined threshold value, controller then may be used
To control the adjusting that the antenna tuner being connected with first antenna carries out circuit impedance, or control is connected with second antenna
The antenna tuner connect carries out the adjusting of circuit impedance, or the antenna tuner that control is connected with first antenna, Yi Jiyu
The antenna tuner that second antenna is connected carries out the adjusting of circuit impedance.
Wherein, each antenna tuner has independent logic control line, and the adjusting of antenna match may be implemented.And it is every
Therefore capacitor and/or variable inductance value inductance and/or variable resistance comprising variable capacitance in a antenna tuner can pass through
Change these variable resistances, capacitor, inductance to adjust the circuit impedance of antenna tuning circuit, thus real by different circuit impedances
Existing different circuit state.Wherein, different circuit impedances will lead to Antenna gain pattern, radiation efficiency changes, therefore,
The adjusting of circuit impedance is carried out by control antenna tuner, thus it is possible to vary the isolation between antenna, to promote antenna effect
Rate.
Further, the antenna circuit further include: coupler is set to for connecting the radio circuit and the function
On the connection circuit of rate detection module.
Further, the antenna circuit further include:
Control switch, including multiple input, output ends and connection switch, the multiple input terminal are coupled with described respectively
The switching of device, each second antenna, which switchs, to connect one to one, and the output end is connect with the power detection module, institute
Stating connection switch can switch between the state for making the output end be connected with any input terminal.
I.e. as shown in Figure 1, the control switch 103 can be controlled separately the access between coupler and power detection module
Conducting and disconnection, the switching of each the second antenna switch the conducting and disconnection of the access between power detection module.
Therefore, when the access between coupler and power detection module is connected in control switch, power detection module can be with
Obtain transmission power when first antenna transmitting signal；When any one the second antenna switching switch be in the second state, and
When the access between the switching switch and power detection module is connected in control switch, power detection module available this second day
Reception power on line.
It follows that the setting of control switch, allow need to carry out the connection circuit of power detection respectively with power
Detection module is connected, thus enable power detection module that can only include an element circuit with power detection,
The circuit structure of the simplified embodiment of the present invention saves the arrangement space on mobile terminal.
In addition, when the antenna circuit further includes coupler and control switch, the flow chart of the signal of the antenna circuit
As shown in Figure 2.It is coupled signal that main radiofrequency signal a part of radio circuit transmitting, which is coupled device processing, which enters
Power detection module, and power detection is carried out by power detection module；Another part of the main radiofrequency signal of radio circuit transmitting
Enter first antenna as radiofrequency signal, is radiate by first antenna.Wherein, the signal that first antenna is radiate is by the 1st
~n the second antennas receive, thus by the 1~n switching switch and control switch, ingoing power detection module, and by
Power detection module carries out power detection.To according to the performance number that power detection module detects judge first antenna with arbitrarily
Isolation between one the second antenna, and then antenna tuner is adjusted according to isolation.
Further, the controller is also used to calculate the transmission power of the first antenna according to following manner:
Pt=P1+W1+K-W2；
Wherein, Pt indicates the transmission power of the first antenna, and P1 indicates the coupler and the power detection module
Between access conducting when, the performance number that the power detection module detects, W1 indicates the loss power of the control switch,
K indicates the coefficient of coup of the coupler, W2 indicate the coupler to the first antenna feed point loss power.
Wherein, the loss power of feed point of the loss power and coupler of control switch to first antenna is pre- first passes through
What relevant experimental data determined.
Further, the controller is also used to calculate the reception function on wherein second antenna according to following manner
Rate:
Pr (i)=P2 (i)+W3 (i)；
Wherein, Pr (i) indicates the reception power on i-th of second antenna, and i-th of P2 (i) expression second day described
When access between line and the power detection module is connected, the performance number that the power detection module detects, W3 (i) is indicated
The power detection module to i-th of second antenna feed point loss power.
Wherein, the loss power of feed point of power detection module to each the second antenna is pre- to first pass through related experiment number
According to determining.
Preferably, as shown in figure 3, the antenna circuit further include:
Radio frequency path switching switch, radio frequency path switching switch setting is for connecting the first antenna and described
The connection circuit of radio circuit and for connect second antenna and it is described switching switch connection circuit；Wherein, institute
Radio frequency path switching switch is stated for making the wherein antenna at least two antenna be connected to the radio circuit.
Specifically, radio frequency path switching switch can for double-pole double throw (DPDT) switch, then the DPDT switch setting first antenna extremely
On the connection circuit and second antenna of radio circuit to the connection circuit of corresponding switching switch.
As shown in figure 3, radio frequency path switching switch include be separately connected with first antenna, at least one second antenna it is defeated
Enter end, and radio circuit, at least one output end for being separately connected of switching switch, and for by corresponding defeated of input terminal
Company's toggle switch that outlet is connected.Then in Fig. 3, radio frequency path switching switch 104 can be connected first antenna 101 and be somebody's turn to do
Radio frequency path switches the access between the switching switch that switch 104 is connected, and is connected and switches switch 104 with the radio frequency path
Access between second antenna of one of them connected 102 and radio circuit.It, will be with i.e. during carrying out isolation detection
One of them second antenna 102 that radio frequency path switching switch 104 is connected is as transmitting antenna, and first antenna 101 is made
For receiving antenna.
Therefore, when carrying out isolation detection, switch 104 can be switched by control radio frequency path from the antenna circuit
Including all antennas in arbitrarily select an antenna as transmitting antenna, and other are as receiving antenna, to be emitted
Isolation between antenna and any one receiving antenna.It follows that the setting of radio frequency path switching switch 104, not only may be used
To detect the isolation between first antenna and each second antenna, can also detect between the second antenna of any two every
From degree, the i.e. setting of radio frequency path switching switch 104, so that the embodiment of the present invention can detecte institute included by antenna circuit
There is the isolation in antenna between any two antenna.
Wherein, it should be noted that when the antenna circuit includes radio frequency path switching switch described above, originally
First antenna as transmitting antenna may also require that reception power, if then the antenna circuit further includes and is set to radio frequency electrical
Road to power detection module connection circuit on coupler when, the coupler require be bidirectional coupler.
In conclusion the embodiment of the present invention, when can detecte out first antenna transmitting signal by power detection module
Transmission power, and by controlling each switching switch so that the access between the second antenna and power detection module is connected, from
And by power detection module detect at least one second antenna receive signal when reception power, and then by controller according to
Transmission power and reception power calculation obtain the isolation between first antenna the second antenna corresponding with the reception power, in turn
Antenna tuner is adjusted according to isolation.It follows that the embodiment of the present invention, is able to detect first antenna and any second day
Isolation between line mitigates mutual to weaken the degree that influences each other between first antenna and any second antenna
Interference, and then solving the problems, such as between multiple antennas that isolation is too low causes antenna efficiency poor.
The embodiments of the present invention also provide a kind of control methods of antenna circuit, applied to antenna electric described above
Road, as shown in Figure 4, which comprises
Step 401: the switching switch on the second antenna described at least one exports first control signal, cuts described in control
Switch is changed in second state.
Wherein, when switching switch is in the second state, the second antenna and power detection module that are connected with switching switch it
Between access conducting.
Step 402: exporting second control signal to the first antenna, control the first antenna transmitting signal.
Wherein, when first antenna emits signal, power detection module can detecte the transmission power of the first antenna.
It, then can be in addition, after receiving the power of first antenna transmitting with the second antenna for being connected of switching switch in the second state
Pass through the reception power on power detection module second antenna.
It, then can be by antenna circuit after the reception power of the transmission power and the second antenna that obtain first antenna
Controller calculate the isolation between first antenna and second antenna, thus according to isolation, control first antenna and/or
The antenna tuner that corresponding second antenna is connected carries out circuit impedance adjusting.
It follows that the control method of the antenna circuit of the embodiment of the present invention is applied to antenna circuit described above
In, the isolation being able to detect between first antenna and any second antenna, to weaken first antenna and any second antenna
Between the degree that influences each other, mitigate mutual interference, and then solve between multiple antennas that isolation is too low to cause antenna to be imitated
The poor problem of rate.
Preferably, it is described on the second antenna described at least one switching switch output first control signal the step of it
Before, the method also includes:
Whether detection mobile terminal is in default operating mode, and is in the default operating mode in the mobile terminal
When, the switching switch output first control signal on the second antenna described at least one is executed, the switching is controlled and opens
The step of closing in second state.
I.e. when mobile terminal is in default operating mode, the controlling party of the antenna circuit of the embodiment of the present invention is just executed
Method, and when mobile terminal is not in default operating mode, then the control method of the antenna circuit of the embodiment of the present invention is not executed.
Further, whether the detection mobile terminal is in default operating mode, comprising:
Detect whether the mobile terminal is in multiple-input, multiple-output MIMO mode；
Or
Whether the main radio-frequency antenna and WIFI antenna for detecting the mobile terminal work at the same time in successive bands.
The i.e. described default operating mode is that MIMO mode or main radio-frequency antenna and WIFI antenna are worked at the same time in adjacent frequency
The mode of section.
Wherein, MIMO is not supported in normal mode (i.e. non-MIMO mode) or external base station environment when mobile terminal works
Terminal, mobile terminal is set using according to default antenna at this time, i.e., the radio frequency path that the radio-frequency module of mobile terminal enables is few
Amount, the antenna amount of work is also a small amount of.And works as mobile terminal and enter the environment for supporting MIMO technology communication, and is mobile whole
Hold when itself also entering MIMO mode, between MIMO multiple antennas isolation be require, so, can use implementation of the present invention at this time
The control method of the antenna circuit of example first detects the isolation between antenna at this time, and then judges whether that antenna tuner need to be adjusted
Optimize isolation between antenna, to reduce coherence between antenna, weakening influences between antenna.
In addition, the main radio-frequency module when mobile terminal works in LTE B40 high channel (2.3G~2.4G), and mobile terminal
2.4G WIFI (2.4G~2.4835GHz) also is connected at this time, is registered in the low channel of WIFI；Or the WIFI of mobile terminal need to work as
Hot spot can have therebetween larger interference, seriously affect in use, the working frequency range of main radio-frequency antenna and WIFI antenna is close
User experience.And it is limited by the limitation of mobile terminal space, antenna adjustment is to take into account main radio-frequency antenna or WIFI antenna efficiency, very
Difficulty does isolation between two antennas very greatly, therefore needs to increase isolation under specific use environment, evades mutual interference.Therefore,
It, can be using the control of the antenna circuit of the embodiment of the present invention when main radio-frequency antenna and WIFI antenna are worked at the same time in successive bands
Method processed detects the isolation between main radio-frequency antenna and WIFI antenna, to weaken between main radio-frequency antenna and WIFI antenna
Influence each other degree, mitigates mutual interference, and then it is too low to solve isolation between how main radio-frequency antenna and WIFI antenna
Lead to the problem that antenna efficiency is poor.
Further, the switching switch output first control signal on the second antenna described at least one, control
The step of switching switch is in second state, comprising: switching switch the first control of output on the WIFI antenna
Signal controls the switching switch on the WIFI antenna in second state.
Further, described to export second control signal to the first antenna, control the first antenna transmitting signal
The step of, comprising: second control signal is exported to the main radio-frequency antenna, the main radio-frequency antenna is controlled and emits signal.
I.e. when the main radio-frequency antenna of mobile terminal and WIFI antenna are worked at the same time in successive bands, main radio frequency can control
Antenna transmission power, and WIFI antenna receives power, to carry out isolation detection.
Specifically, the first antenna of example as shown in figure 1 is main radio-frequency antenna, one of them second antenna is WIFI antenna.Then
Radio circuit transmission power or signal specific are penetrated by master, so that power detection module detects performance number by coupler
P1；Meanwhile synchronous radiate through space of RF energy is received by WIFI antenna, access is switched to power by the switch of control switching at this time
In detection, performance number P2 is detected by power detection module, thus according to P1, P2 and the calculation formula and reception of transmission power
The calculation formula of power obtains the transmission power of main radio-frequency antenna and the reception power of WIFI antenna, and then obtains main radio-frequency antenna
Isolation (difference of the reception power of the transmission power and WIFI antenna of i.e. main radio-frequency antenna) between WIFI antenna.Then,
Judge whether isolation at this time meets predetermined threshold value, be such as unsatisfactory for, then to the day of main radio-frequency antenna and/or WIFI antenna
Line tuner is adjusted, and optimizes isolation between two antennas.
Moreover it is preferred that the switching switch output first control signal on the second antenna described at least one, control
Make the step of switching switch is in second state, comprising:
Switching switch output first control signal on the main radio-frequency antenna, controls the institute on the main radio-frequency antenna
Switching switch is stated in second state.
Preferably, described to export second control signal to the first antenna, control the first antenna transmitting signal
Step, comprising:
Second control signal is exported to the WIFI antenna, controls the WIFI antenna transmitting signal.
I.e. when the main radio-frequency antenna of mobile terminal and WIFI antenna are worked at the same time in successive bands, WIFI can also be controlled
Antenna transmission power, and main radio-frequency antenna receives power, to carry out isolation detection.
The embodiments of the present invention also provide a kind of control devices of antenna circuit, applied to antenna electric described above
Road, as shown in figure 5, the control device 500 of the antenna circuit includes:
First control module 502, for switching switch output the first control letter on the second antenna described at least one
Number, controlling the switching switch is in second state；
Second control module 503 controls the first antenna hair for exporting second control signal to the first antenna
Penetrate signal.
Preferably, as shown in fig. 6, described device further include:
Operating mode detection module 501, for detecting whether mobile terminal is in default operating mode, and in the movement
When terminal is in the default operating mode, switching of first control module on the second antenna described at least one is triggered
Switch output first control signal, controlling the switching switch is in second state.
Preferably, as shown in fig. 6, the operating mode detection module 501 includes:
First detection unit 5011, for detecting whether the mobile terminal is in multiple-input, multiple-output MIMO mode；
Or
Second detection unit 5012, for detecting the main radio-frequency antenna and WIFI antenna whether simultaneously work of the mobile terminal
Make in successive bands.
Preferably, as shown in fig. 6, first control module 502 includes:
First control unit 5021, for the switching switch output first control signal on the WIFI antenna, control
Switching switch on the WIFI antenna is in second state.
Preferably, as shown in fig. 6, second control module 503 includes:
Second control unit 5031 controls the main radio frequency for exporting second control signal to the main radio-frequency antenna
Antenna emits signal.
Preferably, as shown in fig. 6, first control module 502 includes:
Third control unit 5022, for the switching switch output first control signal on the main radio-frequency antenna, control
The switching switch on the main radio-frequency antenna is made in second state.
Preferably, as shown in fig. 6, second control module 503 includes:
4th control unit 5032 controls the WIFI antenna for exporting second control signal to the WIFI antenna
Emit signal.
It can be seen from the above, the embodiment of the present invention, can control the first antenna transmitting signal of antenna circuit, to pass through
Power detection module detects the transmission power of first antenna, and controls between at least one second antenna and power detection module
Access conducting, to detect the reception power on the second antenna by power detection module, and then by controller according to transmitting
Power and reception power calculation obtain the isolation between first antenna the second antenna corresponding with the reception power, and then basis
Isolation adjusts antenna tuner.It follows that the embodiment of the present invention, be able to detect first antenna and any second antenna it
Between isolation mitigate mutual dry to weaken the degree that influences each other between first antenna and any second antenna
It disturbs, and then solving the problems, such as between multiple antennas that isolation is too low causes antenna efficiency poor.
The embodiments of the present invention also provide a kind of mobile terminals, as shown in fig. 7, the mobile terminal 700 includes but unlimited
In: radio frequency unit 701, network module 702, audio output unit 703, input unit 704, sensor 705, display unit 706,
The components such as user input unit 707, interface unit 708, memory 709, processor 710 and power supply 711.Art technology
Personnel are appreciated that mobile terminal structure shown in Fig. 7 does not constitute the restriction to mobile terminal, and mobile terminal may include
Than illustrating more or fewer components, certain components or different component layouts are perhaps combined.In embodiments of the present invention,
Mobile terminal include but is not limited to mobile phone, tablet computer, laptop, palm PC, car-mounted terminal, wearable device, with
And pedometer etc..
Wherein, which further includes antenna circuit 712 described above.Processor 710 is used for the antenna
Switching switch output first control signal at least one of circuit 712 second antenna, controlling the switching switch is in
Second state；Second control signal is exported to the first antenna of the antenna circuit 712, controls the first antenna
Emit signal.
Therefore, the mobile terminal 700 of the embodiment of the present invention is sent out by the first antenna that processor 710 controls antenna circuit
Signal is penetrated, to detect the transmission power of first antenna by power detection module, and controls at least one second antenna and function
Access conducting between rate detection module, to detect the reception power on the second antenna, Jin Ertong by power detection module
Controller is crossed to be obtained between first antenna the second antenna corresponding with the reception power according to transmission power and reception power calculation
Isolation, and then according to isolation adjust antenna tuner.It follows that the embodiment of the present invention, is able to detect first day
Isolation between line and any second antenna, to weaken the journey that influences each other between first antenna and any second antenna
Degree, mitigates mutual interference, and then solving the problems, such as between multiple antennas that isolation is too low causes antenna efficiency poor.
It should be understood that the embodiment of the present invention in, radio frequency unit 701 can be used for receiving and sending messages or communication process in, signal
Send and receive, specifically, by from base station downlink data receive after, to processor 710 handle；In addition, by uplink
Data are sent to base station.In general, radio frequency unit 701 includes but is not limited to antenna, at least one amplifier, transceiver, coupling
Device, low-noise amplifier, duplexer etc..In addition, radio frequency unit 701 can also by wireless communication system and network and other set
Standby communication.
Mobile terminal provides wireless broadband internet by network module 702 for user and accesses, and such as user is helped to receive
It sends e-mails, browse webpage and access streaming video etc..
Audio output unit 703 can be received by radio frequency unit 701 or network module 702 or in memory 709
The audio data of storage is converted into audio signal and exports to be sound.Moreover, audio output unit 703 can also be provided and be moved
The relevant audio output of specific function that dynamic terminal 700 executes is (for example, call signal receives sound, message sink sound etc.
Deng).Audio output unit 703 includes loudspeaker, buzzer and receiver etc..
Input unit 704 is for receiving audio or video signal.Input unit 704 may include graphics processor
(Graphics Processing Unit, GPU) 7041 and microphone 7042, graphics processor 7041 is in video acquisition mode
Or the image data of the static images or video obtained in image capture mode by image capture apparatus (such as camera) carries out
Reason.Treated, and picture frame may be displayed on display unit 706.Through graphics processor 7041, treated that picture frame can be deposited
Storage is sent in memory 709 (or other storage mediums) or via radio frequency unit 701 or network module 702.Mike
Wind 7042 can receive sound, and can be audio data by such acoustic processing.Treated audio data can be
The format output that mobile communication base station can be sent to via radio frequency unit 701 is converted in the case where telephone calling model.
Mobile terminal 700 further includes at least one sensor 705, such as optical sensor, motion sensor and other biographies
Sensor.Specifically, optical sensor includes ambient light sensor and proximity sensor, wherein ambient light sensor can be according to environment
The light and shade of light adjusts the brightness of display panel 7061, and proximity sensor can close when mobile terminal 700 is moved in one's ear
Display panel 7061 and/or backlight.As a kind of motion sensor, accelerometer sensor can detect in all directions (general
For three axis) size of acceleration, it can detect that size and the direction of gravity when static, can be used to identify mobile terminal posture (ratio
Such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap)；It passes
Sensor 705 can also include fingerprint sensor, pressure sensor, iris sensor, molecule sensor, gyroscope, barometer, wet
Meter, thermometer, infrared sensor etc. are spent, details are not described herein.
Display unit 706 is for showing information input by user or being supplied to the information of user.Display unit 706 can wrap
Display panel 7061 is included, liquid crystal display (Liquid Crystal Display, LCD), Organic Light Emitting Diode can be used
Forms such as (Organic Light-Emitting Diode, OLED) configure display panel 7061.
User input unit 707 can be used for receiving the number or character information of input, and generate the use with mobile terminal
Family setting and the related key signals input of function control.Specifically, user input unit 707 include touch panel 7071 and
Other input equipments 7072.Touch panel 7071, also referred to as touch screen collect the touch operation of user on it or nearby
(for example user uses any suitable objects or attachment such as finger, stylus on touch panel 7071 or in touch panel 7071
Neighbouring operation).Touch panel 7071 may include both touch detecting apparatus and touch controller.Wherein, touch detection
Device detects the touch orientation of user, and detects touch operation bring signal, transmits a signal to touch controller；Touch control
Device processed receives touch information from touch detecting apparatus, and is converted into contact coordinate, then gives processor 710, receiving area
It manages the order that device 710 is sent and is executed.Furthermore, it is possible to more using resistance-type, condenser type, infrared ray and surface acoustic wave etc.
Seed type realizes touch panel 7071.In addition to touch panel 7071, user input unit 707 can also include other input equipments
7072.Specifically, other input equipments 7072 can include but is not limited to physical keyboard, function key (such as volume control button,
Switch key etc.), trace ball, mouse, operating stick, details are not described herein.
Further, touch panel 7071 can be covered on display panel 7061, when touch panel 7071 is detected at it
On or near touch operation after, send processor 710 to determine the type of touch event, be followed by subsequent processing device 710 according to touching
The type for touching event provides corresponding visual output on display panel 7061.Although in Fig. 7, touch panel 7071 and display
Panel 7061 is the function that outputs and inputs of realizing mobile terminal as two independent components, but in some embodiments
In, can be integrated by touch panel 7071 and display panel 7061 and realize the function that outputs and inputs of mobile terminal, it is specific this
Place is without limitation.
Interface unit 708 is the interface that external device (ED) is connect with mobile terminal 700.For example, external device (ED) may include having
Line or wireless head-band earphone port, external power supply (or battery charger) port, wired or wireless data port, storage card end
Mouth, port, the port audio input/output (I/O), video i/o port, earphone end for connecting the device with identification module
Mouthful etc..Interface unit 708 can be used for receiving the input (for example, data information, electric power etc.) from external device (ED) and
By one or more elements that the input received is transferred in mobile terminal 700 or can be used in 700 He of mobile terminal
Data are transmitted between external device (ED).
Memory 709 can be used for storing software program and various data.Memory 709 can mainly include storing program area
The storage data area and, wherein storing program area can (such as the sound of application program needed for storage program area, at least one function
Sound playing function, image player function etc.) etc.；Storage data area can store according to mobile phone use created data (such as
Audio data, phone directory etc.) etc..In addition, memory 709 may include high-speed random access memory, it can also include non-easy
The property lost memory, a for example, at least disk memory, flush memory device or other volatile solid-state parts.
Processor 710 is the control centre of mobile terminal, utilizes each of various interfaces and the entire mobile terminal of connection
A part by running or execute the software program and/or module that are stored in memory 709, and calls and is stored in storage
Data in device 709 execute the various functions and processing data of mobile terminal, to carry out integral monitoring to mobile terminal.Place
Managing device 710 may include one or more processing units；Preferably, processor 710 can integrate application processor and modulatedemodulate is mediated
Manage device, wherein the main processing operation system of application processor, user interface and application program etc., modem processor is main
Processing wireless communication.It is understood that above-mentioned modem processor can not also be integrated into processor 710.
Mobile terminal 700 can also include the power supply 711 (such as battery) powered to all parts, it is preferred that power supply 711
Can be logically contiguous by power-supply management system and processor 710, to realize management charging by power-supply management system, put
The functions such as electricity and power managed.
In addition, mobile terminal 700 includes some unshowned functional modules, details are not described herein.
The embodiment of the present invention also provides a kind of computer readable storage medium, and meter is stored on computer readable storage medium
Calculation machine program, the computer program realize each mistake of the control method embodiment of above-mentioned antenna circuit when being executed by processor
Journey, and identical technical effect can be reached, to avoid repeating, which is not described herein again.Wherein, the computer-readable storage medium
Matter, such as read-only memory (Read-Only Memory, abbreviation ROM), random access memory (Random Access
Memory, abbreviation RAM), magnetic or disk etc..
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal (can be mobile phone, computer, service
Device, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form belongs within protection of the invention.
Claims (21)
1. a kind of antenna circuit of mobile terminal characterized by comprising
At least two antennas, wherein each antenna is connected separately with an antenna tuner；
Radio circuit, the radio circuit are electrically connected with the first antenna at least two antenna；
Power detection module is connect with the radio circuit, for obtaining the transmission power when first antenna transmitting signal；
Receiving path, each second antenna at least two antenna in addition to the first antenna pass through a switching and open
Connection is connected to the receiving path, and each switching switch is connect with the power detection module；The switching switch
Including the first state for being connected to second antenna with the receiving path and make second antenna and the function
Second state of rate detection module connection；When switching switch is in second state, pass through the power detection mould
Block obtains the reception power on second antenna；
Controller is electrically connected with the power detection module and the antenna tuner, for according to the power detection
The transmission power for the first antenna that module obtains and the reception power of at least 1 second antenna, calculate described first day
Isolation between line and corresponding second antenna, and according to the isolation control first antenna and/or accordingly
The antenna tuner that is connected of second antenna carry out circuit impedance adjusting.
2. the antenna circuit of mobile terminal according to claim 1, which is characterized in that the antenna circuit further include:
Coupler is set to the connection circuit for connecting the radio circuit and the power detection module.
3. the antenna circuit of mobile terminal according to claim 2, which is characterized in that the antenna circuit further include:
Control switch, including multiple input, output ends and connection switch, the multiple input terminal respectively with the coupler,
The switching switch of each second antenna connects one to one, and the output end is connect with the power detection module, described
Connection switch can switch between the state for making the output end be connected with any input terminal.
4. the antenna circuit of mobile terminal according to claim 1, which is characterized in that further include:
Radio frequency path switching switch, the radio frequency path switching switch setting is for connecting the first antenna and the radio frequency
The connection circuit of circuit and for connect second antenna and it is described switching switch connection circuit；
Wherein, the radio frequency path switching switch is for making the wherein antenna at least two antenna be connected to institute
State radio circuit.
5. the antenna circuit of mobile terminal according to claim 1, which is characterized in that the controller is used for according to following
Mode calculates the isolation between the first antenna and wherein second antenna:
Δ P (i)=Pt-Pr (i)；
Wherein, Δ P (i) indicates that the isolation between the first antenna and i-th of second antenna, Pt indicate described first
The transmission power of antenna, Pr (i) indicate the reception power on i-th of second antenna.
6. the antenna circuit of mobile terminal according to claim 3, which is characterized in that the controller be also used to according to
Under type calculates the transmission power of the first antenna:
Pt=P1+W1+K-W2；
Wherein, Pt indicates the transmission power of the first antenna, and P1 is indicated between the coupler and the power detection module
Access conducting when, the performance number that the power detection module detects, W1 indicates the loss power of the control switch, K table
Show the coefficient of coup of the coupler, W2 indicate the coupler to the first antenna feed point loss power.
7. the antenna circuit of mobile terminal according to claim 3, which is characterized in that the controller be also used to according to
Under type calculates the reception power on wherein second antenna:
Pr (i)=P2 (i)+W3 (i)；
Wherein, Pr (i) indicates the reception power on i-th of second antenna, P2 (i) indicate i-th second antenna with
Between the power detection module access conducting when, the performance number that the power detection module detects, W3 (i) expression described in
Power detection module to i-th of second antenna feed point loss power.
8. a kind of control method of antenna circuit, which is characterized in that be applied to the described in any item antenna electrics of claim 1 to 7
Road, which comprises
Switching switch output first control signal on the second antenna described at least one, controls the switching switch in described
Second state；
Second control signal is exported to the first antenna, controls the first antenna transmitting signal.
9. according to the method described in claim 8, it is characterized in that, the switching on the second antenna described at least one is opened
Before the step of closing output first control signal, the method also includes:
Whether detection mobile terminal is in default operating mode, and when the mobile terminal is in the default operating mode,
The switching switch output first control signal on the second antenna described at least one is executed, controlling the switching switch is in
The step of second state.
10. according to the method described in claim 9, it is characterized in that, whether the detection mobile terminal is in default Working mould
Formula, comprising:
Detect whether the mobile terminal is in multiple-input, multiple-output MIMO mode；
Or
Whether the main radio-frequency antenna and WIFI antenna for detecting the mobile terminal work at the same time in successive bands.
11. according to the method described in claim 10, it is characterized in that, the switching on the second antenna described at least one
Switch output first control signal controls the step of switching switch is in second state, comprising:
Switching switch output first control signal on the WIFI antenna, the switching controlled on the WIFI antenna are opened
Closing is in second state.
12. according to the method for claim 11, which is characterized in that described to first antenna output the second control letter
Number, control the step of first antenna emits signal, comprising:
Second control signal is exported to the main radio-frequency antenna, the main radio-frequency antenna is controlled and emits signal.
13. according to the method described in claim 10, it is characterized in that, the switching on the second antenna described at least one
Switch output first control signal controls the step of switching switch is in second state, comprising:
Switching switch output first control signal on the main radio-frequency antenna, control on the main radio-frequency antenna described cuts
Switch is changed in second state.
14. according to the method for claim 13, which is characterized in that described to first antenna output the second control letter
Number, control the step of first antenna emits signal, comprising:
Second control signal is exported to the WIFI antenna, controls the WIFI antenna transmitting signal.
15. a kind of control device of antenna circuit, which is characterized in that be applied to the described in any item antenna electrics of claim 1 to 7
Road, described device include:
First control module, for the switching switch output first control signal on the second antenna described at least one, control
The switching switch is in second state；
Second control module controls the first antenna transmitting signal for exporting second control signal to the first antenna.
16. device according to claim 15, which is characterized in that described device further include:
Operating mode detection module, for detecting whether mobile terminal is in default operating mode, and at the mobile terminal
When the default operating mode, it is defeated to trigger switching switch of first control module on the second antenna described at least one
First control signal out, controlling the switching switch is in second state.
17. device according to claim 16, which is characterized in that the operating mode detection module includes:
First detection unit, for detecting whether the mobile terminal is in multiple-input, multiple-output MIMO mode；
Or
Whether second detection unit, the main radio-frequency antenna for detecting the mobile terminal work at the same time adjacent with WIFI antenna
Frequency range.
18. device according to claim 17, which is characterized in that first control module includes:
First control unit controls the WIFI for the switching switch output first control signal on the WIFI antenna
Switching switch on antenna is in second state.
19. device according to claim 18, which is characterized in that second control module includes:
Second control unit controls the main radio-frequency antenna transmitting for exporting second control signal to the main radio-frequency antenna
Signal.
20. device according to claim 17, which is characterized in that first control module includes:
Third control unit controls the master for the switching switch output first control signal on the main radio-frequency antenna
Switching switch on radio-frequency antenna is in second state.
21. device according to claim 20, which is characterized in that second control module includes:
4th control unit controls the WIFI antenna transmitting signal for exporting second control signal to the WIFI antenna.
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| CN201810863117.0A CN109039397B (en) | 2018-08-01 | 2018-08-01 | Antenna circuit of mobile terminal, control method and device |
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| CN201810863117.0A CN109039397B (en) | 2018-08-01 | 2018-08-01 | Antenna circuit of mobile terminal, control method and device |
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| WO2021244226A1 (en) * | 2020-06-03 | 2021-12-09 | 中兴通讯股份有限公司 | Wireless communication apparatus, antenna detection method and user device |
| CN114079483B (en) * | 2020-08-11 | 2022-08-02 | 青岛海信移动通信技术股份有限公司 | Multi-antenna decoupling method and user equipment |
| CN114079483A (en) * | 2020-08-11 | 2022-02-22 | 青岛海信移动通信技术股份有限公司 | Multi-antenna decoupling method and user equipment |
| CN112104770A (en) * | 2020-09-04 | 2020-12-18 | Tcl通讯（宁波）有限公司 | Antenna tuning switch controller, communication module and mobile terminal |
| CN114584155A (en) * | 2020-12-02 | 2022-06-03 | 杭州海康威视数字技术股份有限公司 | Monitoring device |
| CN114584155B (en) * | 2020-12-02 | 2024-04-09 | 杭州海康威视数字技术股份有限公司 | Monitoring device |
| CN112764542A (en) * | 2021-01-20 | 2021-05-07 | 维沃移动通信有限公司 | Power control method and device for intelligent glasses, electronic equipment and storage medium |
| CN112968716A (en) * | 2021-02-03 | 2021-06-15 | 维沃移动通信有限公司 | Decoupling circuit, radio frequency front-end module, electronic equipment and isolation degree control method |
| CN113660047A (en) * | 2021-07-21 | 2021-11-16 | 惠州Tcl云创科技有限公司 | RF cable detection method and mobile terminal |
| CN113660047B (en) * | 2021-07-21 | 2023-11-14 | 惠州Tcl云创科技有限公司 | RF cable detection method and mobile terminal |
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