CN105337631A - Antenna matching method, device, and system and mobile terminal - Google Patents
Antenna matching method, device, and system and mobile terminal Download PDFInfo
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- CN105337631A CN105337631A CN201510613358.6A CN201510613358A CN105337631A CN 105337631 A CN105337631 A CN 105337631A CN 201510613358 A CN201510613358 A CN 201510613358A CN 105337631 A CN105337631 A CN 105337631A
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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
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Abstract
The embodiment of the invention provides an antenna matching method, device, and system and a mobile terminal and relates to the technical field of wireless communication. The antenna matching method, device, and system are used for the optimized matching of an antenna in different frequency ranges so as to improve the antenna performance. The antenna matching method comprises steps of detecting whether transmitting power is less than or equal to preset power; if yes, acquiring a circuit matching parameter of an adjustable matching circuit according to scene informational; if not, acquiring the circuit matching parameter of the adjustable matching circuit according to current operating frequency. The antenna matching method, device, and system are used in the mobile terminal.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of aerial matching method, device, system and mobile terminal.
Background technology
Antenna-matching circuit is a kind of by carrying out impedance matching to antenna, ensures the circuit that energy that antenna receives can be transferred to rear stage to greatest extent and carries out processing.If the bad i.e. mismatch of the matching effect of antenna-matching circuit and antenna, so at transmitting terminal, the signal sending antenna to will be reflected back toward transmitter, at receiving terminal, also Signal reception can be caused bad because of mismatch, weaken the receptivity of antenna, therefore, in the terminal, antenna-matching circuit plays vital effect.
And along with the development of mobile radio network technology, mobile phone needs the network frequency range supported to get more and more, needed support 4 ~ 5 network frequency ranges till now from needing support 2 ~ 3 network frequency ranges in the past.But the antenna-matching circuit in prior art is fixing, then the Circuit Matching parameter of this antenna-matching circuit is fixing, therefore, can only carry out optimized coupling to some frequency range, the matching performance for other frequency ranges will be compromised, and reduces antenna performance.
Summary of the invention
Embodiments of the invention provide a kind of aerial matching method, device, system and mobile terminal, in order to realize the optimization matching of antenna under different frequency range, improve antenna performance.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, embodiments provides a kind of aerial matching method, comprising:
Detect transmitting power and whether be less than or equal to predetermined power;
If detect, transmitting power is less than or equal to predetermined power, then obtain the Circuit Matching parameter of adjustable match circuit according to scene information;
If detect, transmitting power is greater than predetermined power, then obtain the Circuit Matching parameter of described adjustable match circuit according to described present operating frequency.
Second aspect, embodiments provides a kind of antenna matching unit, it is characterized in that, comprising:
Whether detecting unit, be less than or equal to predetermined power for detecting transmitting power;
Acquiring unit, if detect that transmitting power is less than or equal to predetermined power for described detecting unit, then obtains the Circuit Matching parameter of adjustable match circuit according to scene information;
Described acquiring unit, if also detect that transmitting power is greater than predetermined power for described detecting unit, then obtains the Circuit Matching parameter of described adjustable match circuit according to described present operating frequency.
The third aspect, embodiments provides a kind of antenna matching system, it is characterized in that, comprising: the antenna matching unit described in adjustable match circuit, transducer and second aspect;
Described antenna matching unit is connected with described transducer, described adjustable match circuit respectively, described antenna matching unit is for performing the aerial matching method described in first aspect, the Circuit Matching parameter that described adjustable match circuit sends for receiving described antenna matching unit, and it is tuning to carry out coupling according to described Circuit Matching parameter.
Fourth aspect, embodiments provides a kind of mobile terminal, and described mobile terminal comprises the antenna matching system described in the third aspect.
Embodiments provide a kind of aerial matching method, device, system and mobile terminal, by determining whether transmitting power is less than or equal to predetermined power, when determining that transmitting power is less than or equal to predetermined power, obtain the Circuit Matching parameter of adjustable match circuit according to scene information; When determining that transmitting power is greater than predetermined power, obtain the Circuit Matching parameter of adjustable match circuit according to present operating frequency.Concrete, when equipment is in running order, under which kind of state can being operated according to the size determining apparatus of transmitting power, when transmitting power is less than or equal to predetermined power, mean that the signal that equipment receives is stronger, now, transducer can get current scene information, and then can obtain the Circuit Matching parameter of adjustable match circuit according to scene information; When the signal that equipment receives weakens, equipment initiatively can strengthen self transmitting power, therefore transmitting power can be greater than predetermined power, and the signal that now equipment receives weakens and also means that equipment is operated in Feeble field, namely transducer cannot sense scene information, therefore, when transducer cannot sense scene information, the Circuit Matching parameter of adjustable match circuit can be obtained according to present operating frequency.That is, based on such scheme, by the judgement to transmitting power, different match search is adopted under different scenes, to meet the Optimum Matching under different conditions and frequency range, like this, just can be implemented in the Optimum Matching under different scene, therefore, technical scheme provided by the present invention is adopted can to improve the matching performance of antenna.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The schematic diagram one of a kind of aerial matching method that Fig. 1 provides for the embodiment of the present invention;
The schematic diagram of a kind of working frequency range that Fig. 2 provides for the embodiment of the present invention, the corresponding relation between operative scenario and Circuit Matching parameter;
The schematic diagram two of a kind of aerial matching method that Fig. 3 provides for the embodiment of the present invention;
The schematic diagram three of a kind of aerial matching method that Fig. 4 provides for the embodiment of the present invention;
The schematic diagram one of a kind of antenna matching unit that Fig. 5 provides for the embodiment of the present invention;
The schematic diagram two of a kind of antenna matching unit that Fig. 6 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
First, before introducing concrete scheme of the present invention, technical term related to the present invention is simply set forth.
Antenna is a kind of transmitting or receives electromagnetic equipment.At receiving terminal, electromagnetic wave changes high-frequency current into by reception antenna or guided wave is sent to receiver through feed equipment (as adjustable match circuit); At transmitting terminal, the high frequency oscillating current that transmitter produces is input to antenna through feed equipment, and high frequency oscillating current is transformed into electromagnetic wave space radiation towards periphery by antenna.
Wherein, impedance matching is one of parameter weighing antenna performance.If impedance mismatch, the high-frequency energy that transmitter exports can not all be gone out by antenna transmission, this part energy do not launched can reflect generation standing wave, ratio for reflection power and transmitting power that reflection occurs is reflection coefficient, standing-wave ratio then calculates according to reflection coefficient and obtains, when standing-wave ratio equals 1, then represent that transmitter is transferred to the high-frequency energy of antenna without any reflection, all launches; If standing-wave ratio is greater than 1, then represent that a part of electric wave is reflected back.Therefore, the impedance matching of antenna need be realized.
Below, specific implementation of the present invention is introduced.
Embodiment one
Embodiments of the invention provide a kind of aerial matching method, as shown in Figure 1, comprising:
Whether step 101, detection transmitting power are less than or equal to predetermined power.
Wherein, transmitting power is the transmitting power under current power frequency.If detect, transmitting power is less than or equal to predetermined power, then perform step 102; If detect, transmitting power is greater than predetermined power, then perform step 103.
If step 102 detects that transmitting power is less than or equal to predetermined power, then obtain the Circuit Matching parameter of adjustable match circuit according to scene information.
In a preferred embodiment of the invention, as shown in Figure 4, the Circuit Matching parameter obtaining adjustable match circuit according to scene information in step 102 comprises:
Whether 102a, detection receive the scene information that transducer sends.
Wherein, transducer is used for identifying the scene of surrounding, to obtain scene information.Common transducer comprises: acceleration sensor, temperature sensor, ambient light sensor, pressure sensor, magnetometric sensor, gyroscope, Proximity Sensor etc., with the scene information residing for perception and identification equipment.
The scene information receiving transducer send if detect, then perform step 102b-102e; The scene information not receiving transducer send if detect, then perform step 102f.
If step 102b receives the scene information that transducer sends, then determine the first residing operative scenario according to scene information.
Wherein, the scene residing for equipment can add right-handed mode for free space mode formula, right-handed mode, left-handed mode, the number of people, the number of people adds in the scenes such as left-handed mode any one.For step 102b, because the scene information under different operative scenario is different, therefore, according to the scene information of transducer identification, determine specifically be in which kind of operative scenario.
Step 102c, the first working frequency range determining residing for present operating frequency.
In embodiments of the present invention, system works frequency range is divided into Band1, Band2 ..., BandN, N >=1, wherein, the frequency range of Band1 is the frequency range of f1 ~ f2, Band2 is f2 ~ f3, by that analogy.If present operating frequency fx meets f1<fx<f2, then determine that the working frequency range residing for present operating frequency fx is Band1.
It should be noted that, for first determining the first operative scenario, then determining the first working frequency range, still first determining the first working frequency range, determining the order of the first operative scenario, the present invention does not add restriction to this.In the present embodiment, first to determine the first operative scenario, then determine that the first working frequency range is that example carries out exemplary explanation.
Step 102d, according to the first working frequency range, the first operative scenario and the working frequency range pre-set, corresponding relation between operative scenario and Circuit Matching parameter, obtain the first Circuit Matching parameter corresponding with the first working frequency range and the first operative scenario.
Be illustrated in figure 2 pre-set working frequency range, corresponding relation between operative scenario and Circuit Matching parameter schematic diagram, wherein, the operative scenario that first behavior is different, use respectively scene 1, scene 2, scene 3 ..., scene M represents, scene 1, scene 2 ..., scene M can for shown in step 104 example different operative scenario in one, the first different working frequency range being classified as division, uses Band1, Band2 ..., BandN to represent respectively.Example, be described for M=4, N=4 in Fig. 2, if the first working frequency range residing for ongoing frequency is Band1, and the first operative scenario when being scene 1 the first corresponding Circuit Matching parameter be a11, if the first working frequency range residing for ongoing frequency is Band4, and the first operative scenario when being scene 2 the first corresponding Circuit Matching parameter be a42, the like.The explanation exemplary according to Fig. 2, can according to the working frequency range pre-set, corresponding relation between operative scenario and Circuit Matching parameter, obtain the first Circuit Matching parameter corresponding with the first working frequency range and the first operative scenario, like this, the first required Circuit Matching parameter can be got fast, more efficiently according to the corresponding relation pre-set.
Step 102e, the first Circuit Matching parameter is defined as the Circuit Matching parameter of adjustable match circuit.
Generally, switch, variable capacitance or variable inductance is comprised in adjustable match circuit.Example, if the first working frequency range residing for ongoing frequency is Band1, and the first operative scenario when being scene 1 the first corresponding Circuit Matching parameter be a11, so, this the first Circuit Matching parameter is the opening or closing of switch, variable capacitance or variable inductance value, so that adjustable match circuit carries out match and regulate, to realize optimization matching according to this Circuit Matching parameter.The concrete form of the present invention to adjustable match circuit does not add restriction, as long as the adjustable match circuit that can realize optimization matching all belongs to the claimed scope of the embodiment of the present invention.
If step 102f does not receive the scene information that transducer sends, second circuit match parameter is defined as the Circuit Matching parameter adjusting match circuit.
Wherein, second circuit match parameter is under the first working frequency range, the Circuit Matching parameter corresponding with free space scene.That is, when detecting that transmitting power is less than or equal to predetermined power value, and transducer is when cannot determine residing operative scenario, Circuit Matching parameter corresponding under acquiescence scene and free space scene can be defined as the Circuit Matching parameter of adjustable match circuit.
If step 103 detects that transmitting power is greater than predetermined power, then obtain the Circuit Matching parameter of adjustable match circuit according to present operating frequency.
In a preferred embodiment of the invention, shown in Fig. 4, step 103 specifically comprises:
103a, the first working frequency range determining residing for present operating frequency.
In embodiments of the present invention, system works frequency range is divided into Band1, Band2 ..., BandN, N >=1, wherein, the frequency range of Band1 is the frequency range of f1 ~ f2, Band2 is f2 ~ f3, by that analogy.If present operating frequency fx meets f1<fx<f2, then determine that the working frequency range residing for present operating frequency fx is Band1.
103b, according to the first working frequency range and the working frequency range pre-set, corresponding relation between operative scenario and Circuit Matching parameter, obtain at least one Circuit Matching parameter corresponding with the first working frequency range.
Concrete, the working frequency range pre-set according to the first working frequency range and Fig. 2, the corresponding relation between operative scenario and Circuit Matching parameter, obtain at least one Circuit Matching parameter corresponding with the first working frequency range.Example, if comprise 4 different operative scenario (scene 1, scene 2, scene 3 and scene 4) in Fig. 2 if the first working frequency range is Band1, then the Circuit Matching parameter a11 under corresponding with the first working frequency range Band1 all scenes, a12, a13 and a14.
103c, execution first pass.
Wherein, first pass comprises:
103c1, tertiary circuit match parameter is sent to adjustable match circuit.
Wherein, tertiary circuit match parameter is any one the Circuit Matching parameter not sending to adjustable match circuit at least one match parameter.
103c2, receive adjustable match circuit send the reflection power corresponding with tertiary circuit match parameter.
103c3, obtain the reflection coefficient corresponding with tertiary circuit match parameter.
Wherein, corresponding with tertiary circuit match parameter reflection coefficient is the reflection power corresponding with tertiary circuit match parameter and the ratio of transmitting power.As shown in following formula: Γ=P
r/ P
in, wherein, Γ represents reflection coefficient, P
rrepresent reflection power, P
inrepresent transmitting power.
Whether 103c4, the detection reflection coefficient corresponding with tertiary circuit match parameter are less than or equal to the reflection coefficient preset.
Example, according to shown in step 103b example, if four the Circuit Matching parameter a11s corresponding with the first working frequency range Band1, a12, a13, a14 does not all send to adjustable match circuit, then the a11 in these four Circuit Matching parameters is sent to adjustable match circuit, it is tuning that adjustable match circuit carries out coupling according to Circuit Matching parameter a11, and then the reflection power corresponding with Circuit Matching parameter a11 is sent to main controller, main controller receives the reflection power corresponding with Circuit Matching parameter a11 that adjustable match circuit sends, obtain the reflection coefficient of the reflection power corresponding with Circuit Matching parameter a11 and transmitting power, and whether the detection reflection coefficient corresponding with Circuit Matching parameter a11 is less than the reflection coefficient preset.If detect, the reflection coefficient corresponding with Circuit Matching parameter a11 is less than the reflection coefficient preset, then perform step 103d.
If step 103d detects that the reflection coefficient corresponding with tertiary circuit match parameter is less than or equal to the reflection coefficient preset, then tertiary circuit match parameter is defined as the Circuit Matching parameter of adjustable match circuit.
Concrete, when detecting that the reflection coefficient corresponding with tertiary circuit match parameter is less than the reflection coefficient preset, then mean that this tertiary circuit match parameter meets the demands, and then tertiary circuit match parameter is defined as the Circuit Matching parameter of adjustable match circuit.
According to described before, reflection coefficient is the ratio of reflection power and transmitting power, is one of major parameter of measurement antenna performance.When emission ratio is larger, namely the ratio of reflection power and transmitting power is larger, then mean that not gone out energy by antenna transmission more, this part energy do not launched can reflect generation standing wave, therefore, need more energy to launch, then reflection power will reduce, and emission ratio also reduces accordingly.Therefore, in step 103d, reflection coefficient is less than or equal to the Circuit Matching parameter that the reflection coefficient preset is defined as adjustable match circuit.
Further, perform in step 103c in the 103c4 of first pass, if detect, the reflection coefficient corresponding with tertiary circuit match parameter is greater than the reflection coefficient preset, and as shown in Figure 4, the method also comprises:
If step 103e detects that the reflection coefficient corresponding with tertiary circuit match parameter is greater than the reflection coefficient preset, then perform first pass, until Circuit Matching parameters all at least one Circuit Matching parameter are all sent to adjustable match circuit.
Example, according to shown in step 103b and step 103c, when the reflection coefficient corresponding with Circuit Matching parameter a11 is more than or equal to the reflection coefficient preset, then adjustable match circuit the Circuit Matching parameter that do not send in (a11, a12, a13, a14) is sent adjustable match circuit, the Circuit Matching parameter be about in (a12, a13, a14) sends adjustable match circuit, perform step 108.If Circuit Matching parameter a12 is sent to adjustable match circuit, when execution of step 108, when detecting that the reflection coefficient corresponding with Circuit Matching parameter a12 is still more than or equal to the reflection coefficient preset, then a Circuit Matching parameter in (a13, a14) is sent to adjustable match circuit, continue to perform step 108.If when the reflection coefficient of the currents match parameter under all scenes corresponding with the first working frequency range is all more than or equal to the reflection coefficient preset, perform step 103f.
Step 103f, obtain the minimum value of the reflection coefficient of all Circuit Matching parameters at least one Circuit Matching parameter.
Step 103g, the four Circuit Matching parameter corresponding with the minimum value of reflection coefficient is defined as the Circuit Matching parameter of adjustable match circuit.
When all Circuit Matching parameters are all sent to adjustable match circuit, and the reflection coefficient of each Circuit Matching parameter is when being all greater than default reflection coefficient, then obtain minimum value in the reflection coefficient of all Circuit Matching parameters, the four Circuit Matching parameter corresponding with the minimum value of reflection coefficient is defined as the Circuit Matching parameter of adjustable match circuit.For described in 103e-103g when, the four Circuit Matching parameter corresponding with the minimum value of reflection coefficient is defined as the Circuit Matching parameter of adjustable match circuit, like this, the energy that antenna is not launched is less, namely antenna can launch more energy, specifically can description in refer step 103d.
Example, if (a11, a12, a13, a14) is all sent to adjustable match circuit by all Circuit Matching parameters corresponding with the first working frequency range, and the reflection coefficient Γ corresponding with Circuit Matching parameter a11
a11, corresponding with Circuit Matching parameter a12 reflection coefficient Γ
a12, corresponding with Circuit Matching parameter a13 reflection coefficient Γ
a13, corresponding with Circuit Matching parameter a14 reflection coefficient Γ
a14all be greater than default reflection coefficient, then obtain (Γ
a11, Γ
a12, Γ
a13, Γ
a14) in minimum value, if minimum value is Γ
a13, then will with Γ
a13corresponding Circuit Matching parameter sends to adjustable match circuit.
For step 103, if detect, transmitting power is greater than predetermined power, the Circuit Matching parameter of adjustable match circuit is then obtained according to present operating frequency, namely in the scene cannot responded at transducer, can start from function of search, the matching value set is searched for, until meet required matching condition.
Further, after the first Circuit Matching parameter or second circuit match parameter or tertiary circuit match parameter or the 4th Circuit Matching circuit are defined as the Circuit Matching parameter of adjustable match circuit, as shown in Figure 3, the method also comprises:
Whether step 104, detection reset present operating frequency.
If step 105 detects do not reset present operating frequency, then the Circuit Matching parameter of acquisition is sent to adjustable match circuit.
Wherein, the Circuit Matching parameter of acquisition is in the first Circuit Matching parameter, second circuit match parameter, tertiary circuit match parameter, the 4th Circuit Matching parameter.
Like this, ensureing, in the current unaltered situation of operating frequency, the Circuit Matching parameter determined to be sent to adjustable match circuit, so as adjustable match circuit to carry out coupling according to corresponding Circuit Matching parameter tuning.
Based on the aerial matching method that the embodiment of the present invention provides, first, detect transmitting power and whether be less than or equal to predetermined power value, for convenience of description, transmitting power, referred to as state 1, is greater than the state of predetermined power value referred to as state 2 by the state hereinafter transmitting power being less than or equal to predetermined power value.
If the transmitting power detected when present operating frequency is less than or equal to predetermined power value, namely when state 1, obtain the Circuit Matching parameter of adjustable match circuit according to scene information.Concrete, if receive the scene information that transducer sends, the scene information then sent according to transducer determines the first operative scenario, determine the first working frequency range residing for present operating frequency, and then according to the first working frequency range, the first operative scenario and the working frequency range pre-set, corresponding relation between operative scenario and Circuit Matching parameter, obtain the first Circuit Matching parameter corresponding with the first working frequency range and the first operative scenario, the first Circuit Matching parameter is defined as the Circuit Matching parameter of adjustable match circuit; If do not receive the scene information that transducer sends, then the Circuit Matching parameter corresponding with free space pattern is defined as the Circuit Matching parameter of adjustable match circuit.
If the transmitting power detected when present operating frequency is greater than predetermined power value, namely when state 2, the Circuit Matching parameter of adjustable match circuit is obtained according to present operating frequency, concrete, determine the first working frequency range residing for present operating frequency, according to the first working frequency range and the working frequency range pre-set, corresponding relation between operative scenario and Circuit Matching parameter, obtain the Circuit Matching parameter under all working scene corresponding with the first working frequency range; One (i.e. tertiary circuit match parameter) in Circuit Matching parameter under all working scene is sent to adjustable match circuit, detect the reflection coefficient corresponding with tertiary circuit match parameter and whether be less than or equal to the reflection coefficient preset, if meet, then tertiary circuit match parameter is defined as the Circuit Matching parameter of adjustable match circuit.
Further, if detect, the reflection coefficient corresponding with tertiary circuit match parameter is greater than the reflection coefficient preset, then will any one Circuit Matching parameter of adjustable match circuit do not sent to send to adjustable match circuit, judge whether reflection coefficient corresponding with it satisfies condition, if all do not satisfy condition, then obtain the minimum value of the reflection coefficient under all scenes, the four Circuit Matching parameter corresponding with the minimum value of reflection coefficient is defined as the Circuit Matching parameter of adjustable match circuit.
Embodiments providing a kind of aerial matching method, by determining whether transmitting power is less than or equal to predetermined power, when determining that transmitting power is less than or equal to predetermined power, obtaining the Circuit Matching parameter of adjustable match circuit according to scene information; When determining that transmitting power is greater than predetermined power, obtain the Circuit Matching parameter of adjustable match circuit according to present operating frequency.Concrete, when equipment is in running order, under which kind of state can being operated according to the size determining apparatus of transmitting power, when transmitting power is less than or equal to predetermined power, mean that the signal that equipment receives is stronger, now, transducer can get current scene information, and then can obtain the Circuit Matching parameter of adjustable match circuit according to scene information; When the signal that equipment receives weakens, equipment initiatively can strengthen self transmitting power, therefore transmitting power can be greater than predetermined power, and the signal that now equipment receives weakens and also means that equipment is operated in Feeble field, namely transducer cannot sense scene information, therefore, when transducer cannot sense scene information, can according to the Circuit Matching parameter of the adjustable match circuit of current power frequency acquisition.That is, based on such scheme, by the judgement to transmitting power, different match search is adopted under different scenes, to meet the Optimum Matching under different conditions and frequency range, like this, just can be implemented in the Optimum Matching under different scene, therefore, technical scheme provided by the present invention is adopted can to improve the matching performance of antenna.
Embodiment two
The embodiment of the present invention additionally provides a kind of antenna matching unit, and each functional unit in this antenna matching unit is corresponding with the method step in above-mentioned aerial matching method, specifically can describe with reference in above-mentioned aerial matching method, not repeat them here.As shown in Figure 5, this device 50 comprises:
Whether detecting unit 501, be less than or equal to predetermined power for detecting transmitting power;
Acquiring unit 502, if detect that transmitting power is less than or equal to predetermined power for detecting unit 501, then obtains the Circuit Matching parameter of adjustable match circuit according to scene information;
Acquiring unit 502, if also detect that transmitting power is greater than predetermined power for detecting unit 501, then obtains the Circuit Matching parameter of adjustable match circuit according to present operating frequency.
Optionally, as shown in Figure 6, this device 50 also comprises: determining unit 503;
Detecting unit 501, also for when detecting that transmitting power is less than or equal to predetermined power, detects the scene information whether receiving transducer and send;
Determining unit 503, if also detect the scene information receiving transducer and send for detecting unit 501, then determines the first residing operative scenario according to scene information, and determines the first operative scenario residing for present operating frequency;
Acquiring unit 502, specifically for determine according to determining unit 503 the first working frequency range, the first operative scenario and the working frequency range pre-set, corresponding relation between operative scenario and Circuit Matching parameter, obtain the first Circuit Matching parameter corresponding with the first working frequency range and the first operative scenario;
Determining unit 503, the first Circuit Matching parameter also for being obtained by acquiring unit 502 is defined as the Circuit Matching parameter of adjustable match circuit.
Optionally, determining unit 503, if the scene information not receiving transducer and send also detected for detecting unit 501, second circuit match parameter is defined as the Circuit Matching parameter of adjustable match circuit, second circuit match parameter is under the first working frequency range, the Circuit Matching parameter corresponding with free space scene.
Optionally, as shown in Figure 6, this device also comprises: processing unit 504;
Determining unit 503, also for when detecting unit 501 detects that transmitting power is greater than predetermined power, determines the first operative scenario residing for present operating frequency;
Acquiring unit 502, also for according to the first working frequency range and the working frequency range pre-set, corresponding relation between operative scenario and Circuit Matching parameter, obtains at least one Circuit Matching parameter corresponding with the first working frequency range;
Processing unit 504, for performing first pass, first pass comprises: tertiary circuit match parameter is sent to adjustable match circuit; Receive the reflection power corresponding with tertiary circuit match parameter that adjustable match circuit sends; Obtain the reflection coefficient corresponding with tertiary circuit match parameter; Detect the reflection coefficient corresponding with tertiary circuit match parameter and whether be less than or equal to the reflection coefficient preset;
Determining unit 503, if detect that the reflection coefficient corresponding with tertiary circuit match parameter is less than or equal to the reflection coefficient preset for processing unit 504, is then defined as the Circuit Matching parameter of adjustable match circuit by tertiary circuit match parameter;
Wherein, tertiary circuit match parameter is any one the Circuit Matching parameter not sending to adjustable match circuit at least one match parameter; The reflection coefficient corresponding with tertiary circuit match parameter is the reflection power corresponding with tertiary circuit match parameter and the ratio of transmitting power.
Optionally, processing unit 504, if time also for detecting that the reflection coefficient corresponding with tertiary circuit match parameter is greater than the reflection coefficient preset, perform first pass, until Circuit Matching parameters all at least one Circuit Matching parameter are all sent to adjustable match circuit;
Acquiring unit 502, also for obtaining the minimum value of the reflection coefficient of all Circuit Matching parameters at least one Circuit Matching parameter;
Determining unit 503, the four Circuit Matching parameter corresponding with the minimum value of reflection coefficient also for being obtained by acquiring unit 502 is defined as the Circuit Matching parameter of adjustable match circuit.
Optionally, detecting unit 501, also for obtain adjustable match circuit at acquiring unit 502 Circuit Matching parameter after, detect whether reset present operating frequency;
Processing unit 504, if detect for detecting unit 501 and do not reset present operating frequency, then the Circuit Matching parameter of acquisition is sent to adjustable match circuit, the Circuit Matching parameter of acquisition is one in the first Circuit Matching parameter, second circuit match parameter, tertiary circuit match parameter and the 4th electric match parameter.
Embodiments providing a kind of antenna matching unit, by determining whether transmitting power is less than or equal to predetermined power, when determining that transmitting power is less than or equal to predetermined power, obtaining the Circuit Matching parameter of adjustable match circuit according to scene information; When determining that transmitting power is greater than predetermined power, obtain the Circuit Matching parameter of adjustable match circuit according to present operating frequency.Concrete, when equipment is in running order, under which kind of state can being operated according to the size determining apparatus of transmitting power, when transmitting power is less than or equal to predetermined power, mean that the signal that equipment receives is stronger, now, transducer can get current scene information, and then can obtain the Circuit Matching parameter of adjustable match circuit according to scene information; When the signal that equipment receives weakens, equipment initiatively can strengthen self transmitting power, therefore transmitting power can be greater than predetermined power, and the signal that now equipment receives weakens and also means that equipment is operated in Feeble field, namely transducer cannot sense scene information, therefore, when transducer cannot sense scene information, can according to the Circuit Matching parameter of the adjustable match circuit of current power frequency acquisition.That is, based on such scheme, by the judgement to transmitting power, different match search is adopted under different scenes, to meet the Optimum Matching under different conditions and frequency range, like this, just can be implemented in the Optimum Matching under different scene, therefore, technical scheme provided by the present invention is adopted can to improve the matching performance of antenna.
In addition, the embodiment of the present invention additionally provides a kind of antenna matching system, comprises the antenna matching unit 50 described in adjustable match circuit, transducer and above-described embodiment; Wherein, antenna matching unit 50 is connected with transducer, adjustable match circuit respectively, antenna matching unit is for performing aerial matching method described above, and adjustable match circuit is used for the Circuit Matching parameter that reception antenna coalignment 50 sends, and it is tuning to carry out coupling according to Circuit Matching parameter.
The embodiment of the present invention additionally provides a kind of mobile terminal, and this mobile terminal comprises antenna matching system described above.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (9)
1. an aerial matching method, is characterized in that, comprising:
Detect transmitting power and whether be less than or equal to predetermined power;
If detect, transmitting power is less than or equal to predetermined power, then obtain the Circuit Matching parameter of adjustable match circuit according to scene information;
If detect, transmitting power is greater than predetermined power, then obtain the Circuit Matching parameter of described adjustable match circuit according to described present operating frequency.
2. method according to claim 1, is characterized in that, the described Circuit Matching parameter obtaining adjustable match circuit according to scene information comprises:
Detect the scene information whether receiving transducer and send;
If receive the scene information that described transducer sends, then determine the first residing operative scenario according to described scene information, and determine the first working frequency range residing for present operating frequency;
According to described first working frequency range, described first operative scenario and the working frequency range pre-set, corresponding relation between operative scenario and Circuit Matching parameter, obtain the first Circuit Matching parameter corresponding with described first working frequency range and described first operative scenario;
Described first Circuit Matching parameter is defined as the Circuit Matching parameter of adjustable match circuit.
3. method according to claim 2, is characterized in that, the described Circuit Matching parameter obtaining adjustable match circuit according to scene information also comprises:
Do not receive the scene information that described transducer sends, second circuit match parameter is defined as the Circuit Matching parameter of described adjustable match circuit, described second circuit match parameter is under described first working frequency range, the Circuit Matching parameter corresponding with free space scene.
4. method according to claim 1, is characterized in that, the described Circuit Matching parameter according to the described adjustable match circuit of described present operating frequency acquisition comprises:
Determine the first working frequency range residing for present operating frequency;
According to described first working frequency range and described in the working frequency range, the corresponding relation between operative scenario and Circuit Matching parameter that pre-set, obtain at least one Circuit Matching parameter corresponding with described first working frequency range;
Perform first pass, described first pass comprises: tertiary circuit match parameter is sent to described adjustable match circuit; Receive the reflection power corresponding with described tertiary circuit match parameter that described adjustable match circuit sends; Obtain the reflection coefficient corresponding with described tertiary circuit match parameter; Detect the reflection coefficient corresponding with described tertiary circuit match parameter and whether be less than or equal to the reflection coefficient preset;
If detect the reflection coefficient corresponding with described tertiary circuit match parameter be less than or equal to described in the reflection coefficient that presets, then described tertiary circuit match parameter is defined as the Circuit Matching parameter of described adjustable match circuit;
Wherein, described tertiary circuit match parameter is any one the Circuit Matching parameter not sending to described adjustable match circuit at least one match parameter described; Reflection coefficient corresponding to described and described tertiary circuit match parameter is the reflection power corresponding with described tertiary circuit match parameter and the ratio of described transmitting power.
5. method according to claim 4, is characterized in that, described method also comprises:
If detect the reflection coefficient corresponding with described tertiary circuit match parameter be greater than described in the reflection coefficient that presets, then perform described first pass, until all Circuit Matching parameters at least one Circuit Matching parameter described are all sent to described adjustable match circuit;
Obtain the minimum value of the reflection coefficient of all Circuit Matching parameters at least one Circuit Matching parameter described;
The four Circuit Matching parameter corresponding with the minimum value of reflection coefficient is defined as the Circuit Matching parameter of described adjustable match circuit.
6. the method according to any one of claim 1-5, is characterized in that, after the Circuit Matching parameter obtaining described adjustable match circuit, described method also comprises:
Detect and whether reset described present operating frequency;
Described present operating frequency is not reset if detect, then the Circuit Matching parameter of acquisition is sent to described adjustable match circuit, the Circuit Matching parameter of described acquisition is one in described first Circuit Matching parameter, described second circuit match parameter, described tertiary circuit match parameter and described 4th electric match parameter.
7. an antenna matching unit, is characterized in that, comprising:
Whether detecting unit, be less than or equal to predetermined power for detecting transmitting power;
Acquiring unit, if detect that transmitting power is less than or equal to predetermined power for described detecting unit, then obtains the Circuit Matching parameter of adjustable match circuit according to scene information;
Described acquiring unit, if also detect that transmitting power is greater than predetermined power for described detecting unit, then obtains the Circuit Matching parameter of described adjustable match circuit according to described present operating frequency.
8. an antenna matching system, is characterized in that, comprising: adjustable match circuit, transducer and antenna matching unit according to claim 7;
Described antenna matching unit is connected with described transducer, described adjustable match circuit respectively, described antenna matching unit is used for the aerial matching method described in any one of enforcement of rights requirement 1-6, the Circuit Matching parameter that described adjustable match circuit sends for receiving described antenna matching unit, and it is tuning to carry out coupling according to described Circuit Matching parameter.
9. a mobile terminal, is characterized in that, described mobile terminal comprises antenna matching system according to claim 8.
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