CN104779438A - Wireless communication device and method for adjusting antenna matching - Google Patents
Wireless communication device and method for adjusting antenna matching Download PDFInfo
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- CN104779438A CN104779438A CN201410017964.7A CN201410017964A CN104779438A CN 104779438 A CN104779438 A CN 104779438A CN 201410017964 A CN201410017964 A CN 201410017964A CN 104779438 A CN104779438 A CN 104779438A
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Abstract
The invention discloses a wireless communication device and a method for adjusting antenna matching. The wireless communication device comprises a main antenna, a diversity antenna, an adjustable matching circuit, a detection unit and a radio-frequency processing circuit, wherein the main antenna and the diversity antenna operate at a receiving frequency band to receive a received signal; the adjustable matching circuit is coupled with the main antenna and the diversity antenna, and used for adjusting matching of the main antenna and the diversity antenna according to a control signal; the detection unit is coupled with the adjustable matching circuit, and used for detecting a wireless communication system corresponding to the received signal to generate a detection result; the detection result indicates antenna configuration and a transmitting frequency band which correspond to the wireless communication system; and the radio-frequency processing circuit is coupled with the detection unit and the adjustable matching circuit, and used for judging whether to adjust the matching of the diversity antenna according to the antenna configuration indicated by the detection result to output the control signal to the adjustable matching circuit to allow the adjustable matching circuit to adjust the matching of the diversity antenna to meet the antenna configuration, and judging whether to weaken antenna efficiency of the diversity antenna. The wireless communication device can allow isolation between the two antennas to be optimized.
Description
Technical field
The present invention relates to a kind of method of radio communication device and adjustment antenna match, espespecially one can adjust antenna match in good time, makes the isolation between double antenna remain on the radio communication device of optimized state and the method for adjustment antenna match.
Background technology
Radio communication device, as mobile phone, flat computer and notebook computer etc., is launched by antenna or receives radio wave, to transmit or to exchange radio signal, and then accessing wireless network.In addition, along with the evolution of wireless communication technology, known technology has developed different wireless communication systems, and therefore for adapting to new wireless communication system, the antenna amount that radio communication device configures may increase.The wireless communication system that antenna configuration (Antenna Configuration) correspondence that following form 1 lists radio communication device is supported:
Specifically, global system for mobile communications (the Global System forMobile communication of second generation mobile communication system (being called for short 2G), GSM) be single-input single-output (the Single-Input Single-Output of individual antenna configuration, SISO) system, radio communication device configuration has the single main antenna of reception and emission function.Universal mobile telecommunications system (the Universal Mobile Telecommunication System of 3-G (Generation Three mobile communication system) (being called for short 3G), and CDMA(Code Division Multiple Access) (Code Division Multiple Access UMTS), CDMA) be single input and multi-output (the Single-Input Multi-Output of two-antenna configuration, SIMO) system, radio communication device configuration has the main antenna of reception and emission function and only has the auxiliary antenna of receiving function.And Long Term Evolution (the LongTerm Evolution of forth generation mobile communication system (being called for short 4G), LTE) be multiple-input and multiple-output (the Multi-input Multi-output of two-antenna configuration, MIMO) system, radio communication device configuration has two main antennas of reception and emission function, is so also called antenna diversity (Diversity).
In addition, the communication system used due to country variant or telecommunication operator is not quite similar, although and the telecommunication operator of zones of different uses identical communication system, its operating frequency possibility difference.Therefore, support that the demand of the mobile communications device of multiple wireless communication system, multiplex's working frequency also occurs thereupon, for user by by single wireless communication device, with zones of different or support that the base station of different wireless communication system is linked up.
The pre-configured double antenna of wireless communications products most now, in order that be convenient to the hardware integration of MIMO, SIMO and SISO system, to realize the mobile communications device supporting multiple wireless communication system, multiplex's working frequency.But, at plural antenna with when frequently using, the problem of isolation but can be produced.Isolation between double antenna is not good, the launching and receiving efficiency of double antenna will be weakened.
Under the framework of configuration double antenna, when radio communication device switches to SIMO system by mimo system, temporarily do not need the emission function of diversity antenna (i.e. another main antenna), if main antenna and diversity antenna not good at the isolation of transmit frequency band, equivalence is weakened the emission function of main antenna.In addition, when radio communication device by MIMO or SIMO systematic evaluation to SISO system time, only need the launching and receiving function of main antenna, if the isolation between main antenna and diversity or auxiliary antenna is not good, equivalence weakened the launching and receiving function of main antenna.
Therefore, when radio communication device switches the system of its use, how to make the isolation between double antenna remain on optimized state, one of target that reality is made great efforts for wireless communication arena.
Thus, need to provide a kind of method of radio communication device and adjustment antenna match to solve the problems referred to above.
Summary of the invention
Therefore, main purpose of the present invention is a kind of method providing radio communication device and adjustment antenna match, when radio communication device switches the system of its use, by adjustment antenna match, the isolation between double antenna is made to remain on the radio communication device of optimized state and the method for adjustment antenna match.
The present invention discloses a kind of radio communication device, and this radio communication device comprises: a main antenna, and this main antenna operates in a reception frequency range, to be received in a Received signal strength of this reception frequency range; One diversity antenna, this diversity antenna operates in this reception frequency range, to be received in this Received signal strength of this reception frequency range; One adjustable match circuit, this adjustable match circuit is coupled to this main antenna and this diversity antenna, is used for, according to a control signal, adjusting the coupling of this main antenna and this diversity antenna; One detecting unit, this detecting unit is coupled to this adjustable match circuit, be used for detecting a wireless communication system corresponding to this Received signal strength, to produce a testing result, wherein this testing result antenna configuration of indicating this wireless communication system corresponding and a transmit frequency band; And a rf processing circuitry, this rf processing circuitry is coupled to this detecting unit and this adjustable match circuit, be used for this antenna configuration indicated according to this testing result, judge whether the coupling adjusting this diversity antenna, export this according to this and control signal to this adjustable match circuit, this adjustable match circuit is made to adjust the coupling of this diversity antenna, to meet this antenna configuration; Wherein, this antenna configuration that this rf processing circuitry indicates according to this testing result, judge whether to weaken the antenna performance of both or both one of this diversity antenna in this transmit frequency band and this reception frequency range, to promote the isolation between this diversity antenna and this main antenna.
The present invention also discloses a kind of method adjusting antenna match, the method of this adjustment antenna match is used for a radio communication device, this radio communication device comprises the main antenna and a diversity antenna that operate in a reception frequency range, and the method comprises: receive this Received signal strength by this main antenna and this diversity antenna; Detect the wireless communication system that this Received signal strength is corresponding, to export a testing result, wherein this testing result antenna configuration of indicating this wireless communication system corresponding and a transmit frequency band; According to this antenna configuration that this testing result indicates, judging whether the coupling adjusting this diversity antenna, exporting a control signal of the coupling for adjusting this diversity antenna according to this; And according to this control signal, adjust the coupling of this diversity antenna, to meet this antenna configuration; Wherein, this antenna configuration indicates whether to weaken the antenna performance of both or both one of this diversity antenna in this transmit frequency band and this reception frequency range, to promote the isolation between this diversity antenna and this main antenna.
The present invention can adjust diversity antenna in transmit frequency band or the coupling receiving frequency range in automatic dynamic ground, to reduce the impact of diversity antenna on main antenna, so be equivalent to the isolation promoted between main antenna and diversity antenna, thus, radio communication device of the present invention can for the demand of different wireless communication system, the coupling of automatic dynamic ground adjustment diversity antenna, remains on optimized state to make the isolation between double antenna.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a radio communication device of the embodiment of the present invention.
Fig. 2 A to Fig. 2 D be the main antenna of Fig. 1 with the voltage standing wave ratio of diversity antenna compare schematic diagram.
Fig. 3 is the schematic diagram of the matching unit of Fig. 1 of the embodiment of the present invention.
Fig. 4 is the schematic diagram of a flow process of the embodiment of the present invention.
Primary clustering symbol description:
10 radio communication devices
11 adjustable match circuits
12 detecting units
13 rf processing circuitries
110,112 matching units
111 control units
130 RF processing units
131 storage elements
132 central processing units
ANT_m main antenna
ANT_d diversity antenna
RX_sig Received signal strength
TX_sig transmits
DET_rst testing result
CTRL_sig control signal
MTH_info match information
ADJ_1, ADJ_2 adjust signal
SYS wireless communication system
F1, f2 working frequency range
N1, N2 node
C1, C2 electric capacity
L1, L2 inductance
30 low frequency adjustment units
32 high frequency adjustment units
40 flow processs
41,42,43,44,45,46,47 steps
Embodiment
Please refer to Fig. 1, it is the schematic diagram of a radio communication device 10 of the embodiment of the present invention.Radio communication device 10 can be the mobile device with radio communication function, as mobile phone, flat computer and notebook computer etc.The radio communication device 10 of the present embodiment is configured to example with two main antennas simultaneously with reception and emission function and illustrates, but is not limited thereto.Radio communication device 10 can also single main antenna and the configuration of single auxiliary antenna, and under this framework, auxiliary antenna itself does not have emission function, therefore only need adjust auxiliary antenna in the coupling receiving frequency range.
As shown in Figure 1, radio communication device 10 comprises a main antenna ANT_m, a diversity antenna ANT_d, adjustable match circuit 11, detecting unit 12 and a rf processing circuitry 13.Main antenna ANT_m and diversity antenna ANT_d all can operate in a transmit frequency band and and receive frequency range, to transmit TX_sig to receive a Received signal strength RX_sig and to launch one.Adjustable match circuit 11 is coupled to main antenna ANT_m and diversity antenna ANT_d, is used for according to a control signal CTRL_sig, coupling main antenna ANT_m and diversity antenna ANT_d.Detecting unit 12 is coupled to adjustable match circuit 11, is used for output one testing result DET_rst, and it is used to indicate a wireless communication system SYS corresponding to Received signal strength RX_sig, and wireless communication system SYS indicates an antenna configuration (i.e. form 1).Rf processing circuitry 13 is coupled to detecting unit 12, be used for according to testing result DET_rst, judge whether the coupling adjusting main antenna ANT_m and diversity antenna ANT_d, export control signal CTRL_sig according to this to adjustable match circuit 11, to control the coupling that adjustable match circuit 11 adjusts main antenna ANT_m and diversity antenna ANT_d.
Adjustable match circuit 11 includes matching unit 110, a 112 and control unit 111.Matching unit 110 is coupled to main antenna ANT_m, is used for mating main antenna ANT_m.Matching unit 112 is coupled to diversity antenna ANT_d, is used for mating diversity antenna ANT_d.Control unit 111 is coupled to rf processing circuitry 13 and matching unit 110,112, be used for according to control signal CTRL_sig, produce adjustment signal ADJ_1, ADJ_2 to matching unit 110,112, to adjust the coupling of main antenna ANT_m and diversity antenna ANT_d respectively.
Rf processing circuitry 13 comprises RF processing unit 130, storage element 131 and a central processing unit 132.RF processing unit 130 is used for process Received signal strength RX_sig, reads data wherein for central processing unit 132.Storage element 131 is used for storage one match information MTH_info.Central processing unit 132 is coupled to RF processing unit 130, detecting unit 12 and storage element 131.Central processing unit 132 according to testing result DET_rst, can judge whether the coupling adjusting main antenna ANT_m and diversity antenna ANT_d.If so, then central processing unit 132 reads match information MTH_info, produces control signal CTRL_sig according to this to control unit 111.In addition, rf processing circuitry 13 is also used for according to the wireless communication system SYS of testing result DET_rst instruction and the data of central processing unit 132 output, generation transmits TX_sig to main antenna ANT_m and diversity antenna ANT_d, main antenna ANT_m and diversity antenna ANT_d is transmitted TX_sig, to realize the radio communication between radio communication device 10 and base station.
Operationally, when user starts the radio communication function of radio communication device 10, radio communication device 10 is first by Received signal strength RX_sig that the base station in main antenna ANT_m and diversity antenna ANT_d reception environment sends, then the carrier frequency of Received signal strength RX_sig or the measuring value of base station return is detected by detecting unit 12, such as received signal strength (Received Signal Strength Indication, RSSI), testing result DET_rst is produced according to this to central processing unit 132.Central processing unit 132, according to testing result DET_rst, learns that wireless communication system SYS that the base station in environment uses is for after MIMO, SIMO or SISO system, determines the coupling whether adjusting main antenna ANT_m and diversity antenna ANT_d.When needs adjustment coupling, central processing unit 132 reads corresponding match information MTH_info by storage element 131, produces control signal CTRL_sig according to this to control unit 111.Control unit 111, according to control signal CTRL_sig, produces adjustment signal ADJ_1, ADJ_2 to matching unit 110,112, to adjust the coupling of main antenna ANT_m and diversity antenna ANT_d respectively.
Specifically, when testing result DET_rst indicates wireless communication system SYS to be mimo system (LTE system as 4G), the coupling of main antenna ANT_m and diversity antenna ANT_d can remain unchanged.
When testing result DET_rst indicates wireless communication system SYS to be SIMO system (HSPA, CDMA2000 system as 3G), now diversity antenna ANT_d is only for receiving, the exportable control signal CTRL_sig of central processing unit 132 adjusts the coupling of diversity antenna ANT_d to indicate adjustable match circuit 11, make diversity antenna ANT_d inoperation in transmit frequency band, to reduce diversity antenna ANT_d in the impact of transmit frequency band on main antenna ANT_m, be so equivalent to promote the isolation of main antenna ANT_m and diversity antenna ANT_d at transmit frequency band.
When testing result DET_rst indicates wireless communication system SYS to be SISO system (gsm system as 2G), now diversity antenna ANT_d is not used in and receives and launch, the exportable control signal CTRL_sig of central processing unit 132 adjusts diversity antenna ANT_d in the coupling launching and receive frequency range to indicate adjustable match circuit 11, make diversity antenna ANT_d inoperation in reception and transmit frequency band, launching to reduce diversity antenna ANT_d and receiving frequency range to the impact of main antenna ANT_m, so be equivalent to promote main antenna ANT_m and diversity antenna ANT_d at the isolation launching and receive frequency range.
Further, control signal CTRL_sig can indicate adjustable match circuit 11 to carry out the one of following three kinds of Matching and modification mode:
(1) frequency shift (FS);
(2) antenna performance is adjusted; And
(3) antenna performance and frequency shift (FS) is adjusted.
Specifically, please refer to Fig. 2 A to Fig. 2 D, it is the comparison schematic diagram of the voltage standing wave ratio (Voltage Standing Wave Ratio, VSWR) of main antenna ANT_m and diversity antenna ANT_d.The voltage standing wave ratio of main antenna ANT_m and diversity antenna ANT_d represents with solid line and dotted line respectively.Voltage standing wave ratio is the parameter of reflection antenna performance, if antenna in the voltage standing wave ratio of characteristic frequency more close to 1, represent that antenna is better in the antenna performance of this frequency; Otherwise voltage standing wave ratio is more poorer away from 1 antenna performance.In addition, when the voltage standing wave ratio figure of double antenna is more close, then represent that the radiation pattern of double antenna may be more close, therefore isolation between the two may not be good; Otherwise when the voltage standing wave ratio graphic difference of double antenna is larger, then represent that the radiation pattern difference of double antenna is also comparatively large, the isolation therefore between double antenna may be better.
In fig. 2, when radio communication device 10 has two-antenna configuration, in the working frequency range f1 containing launching and receiving frequency range, the voltage standing wave ratio figure of main antenna ANT_m and diversity antenna ANT_d is quite close, therefore both antenna performance are comparatively close, with possess simultaneously reception and emission function to support mimo system.
Fig. 2 B depicts the matching result of coupling mode (1), the working frequency range of diversity antenna ANT_d is offset to the working frequency range f2 only contained and receive frequency range by working frequency range f1, and then weaken the antenna performance of diversity antenna ANT_d at working frequency range f1, thus promote the isolation of main antenna ANT_m and diversity antenna ANT_d at transmit frequency band.
Fig. 2 C depicts the matching result of coupling mode (2), diversity antenna ANT_d in the voltage standing wave ratio of working frequency range f1 away from 1, and then make diversity antenna ANT_d not good in the antenna performance of working frequency range f1, thus promote the isolation of main antenna ANT_m and diversity antenna ANT_d in launching and receiving frequency range.
Fig. 2 D depicts the matching result of coupling mode (3), the working frequency range of diversity antenna ANT_d is offset to the working frequency range f2 only contained and receive frequency range by working frequency range f1, and make its voltage standing wave ratio away from 1, and then weaken the antenna performance of diversity antenna ANT_d at working frequency range f1 and f2, thus promote the isolation of main antenna ANT_m and diversity antenna ANT_d in launching and receiving frequency range.
Under aforesaid operations mechanism, be not limited to when radio communication device 10 opens its radio communication function, in the process of radio communication device 10 movement, detecting unit 12 also can detect the Received signal strength RX_sig from other base stations at any time, determine whether switch used wireless communication system SYS, and judge wireless communication system SYS that those base stations use why, dynamically to adjust the coupling of diversity antenna ANT_d, reach the object making the isolation between main antenna ANT_m and diversity antenna ANT_d remain on optimized state.
For example, when radio communication device 10 switches to SIMO system by mimo system, radio communication device 10 can select the frequency shift (FS) of coupling mode (1) to adjust diversity antenna ANT_d, makes its inoperation in transmit frequency band, because under SIMO system, diversity antenna ANT_d is only for receiving.In addition, when radio communication device 10 by MIMO or SIMO systematic evaluation to SISO system time, radio communication device 10 can select coupling mode (2) or (3) to adjust diversity antenna ANT_d, make its inoperation in reception and transmit frequency band, because under SISO system, diversity antenna ANT_d is not used in and receives and launch.Vice versa, when radio communication device 10 by SIMO or SISO systematic evaluation to mimo system time, the Matching and modification of diversity antenna ANT_d can be returned original setting by radio communication device 10, makes diversity antenna ANT_d recover it and receives and emission function, to support mimo system.
In brief, why radio communication device 10 of the present invention judges wireless communication system corresponding to the radiofrequency signal in environment, adjustment diversity antenna in automatic dynamic ground is in transmit frequency band or the coupling (such as weakening diversity antenna in transmit frequency band or the antenna performance receiving frequency range) receiving frequency range, to reduce the impact of diversity antenna on main antenna, be so equivalent to the isolation promoted between main antenna and diversity antenna.Thus, radio communication device 10 of the present invention can for the demand of different wireless communication system, and the coupling of automatic dynamic ground adjustment diversity antenna, remains on optimized state to make the isolation between double antenna.Those of ordinary skill in the art should modify accordingly and change, and is not limited thereto.
For example, the direction of frequency shift (FS) is not limit, except diversity antenna ANT_d to be offset to the working frequency range f2 of higher-frequency by Fig. 2 B by working frequency range f1, but under different demand, also diversity antenna ANT_d can be offset to other frequency ranges lower than working frequency range f1 by working frequency range f1.
On the other hand, please refer to Fig. 3, it is the schematic diagram of the matching unit 112 of the embodiment of the present invention.In figure 3, matching unit 112 comprises node N1 and N2, electric capacity C1, C2 and inductance L 1, L2.Node N1 is coupled to diversity antenna ANT_d, and node N2 is coupled to detecting unit 12.Electric capacity C1 is coupled to node N1; One end of electric capacity C2 is coupled to node N1, and the other end is coupled to an earth terminal; One end of inductance L 1 is coupled to electric capacity C1, and the other end is coupled to node N2; One end of inductance L 2 is coupled to node N1, and the other end is coupled to earth terminal.
It should be noted that and be different from traditional π shape or T-shaped match circuit, the present invention uses two groups of filters in series, in order to adjust the input impedance (mating namely between antenna with rf processing circuitry 13) of antenna, to be applicable to the antenna supporting many working frequency range.Specifically, electric capacity C1 and inductance L 2 form a filter or a low frequency adjustment unit 30, adjustable match circuit 11 adjusts both or both one in the capacitance of electric capacity C1 and an inductance value of inductance L 2, is adjusted the coupling of diversity antenna ANT_d in low frequency frequency range.On the other hand, electric capacity C2 and inductance L 1 form another filter or a high frequency adjustment unit 32, adjustable match circuit 11 adjusts both or both one in the capacitance of electric capacity C2 and the inductance value of inductance L 1, is adjusted the coupling of diversity antenna ANT_d in high-frequency band.
Match information MTH_info can comprise main antenna ANT_m and diversity antenna ANT_d in different wireless communication system SYS and corresponding working frequency range, electric capacity C1, C2 and inductance L 1, capacitance corresponding to L2 and inductance value.Preferably, electric capacity C1, C2 and inductance L 1, L2 are electric adjustable element, with according to adjustment signal ADJ_1 and ADJ_2, adjust its capacitor and inductor value.Wherein, the adjustable capacitance value scope of electric capacity C1, C2 is between 0.2 ~ 15 micromicrofarad (picofarad, pF), and the adjustable inductance value scope of inductance L 1, L2 is between 1 ~ 33 nanohenry (nanohenry, nH).
It should be noted that Fig. 3 is for matching unit 112 explanation.But be not limited thereto, matching unit 110 and 112 can have same circuits design, and therefore in matching unit 110, node N1 is coupled to main antenna ANT_m, and the design of all the other electric capacity, inductance is then consistent with matching unit 112, is not repeated herein.
Please refer to Fig. 4, it is the schematic diagram of a flow process 40 of the embodiment of the present invention.Flow process 40, in the radio communication device 10 of Fig. 1, is used for adjusting antenna match, makes the isolation between double antenna remain on optimized state.Flow process 40 comprises following steps:
Step 41: start.
Step 42: receive a Received signal strength by the main antenna and a diversity antenna that operate in a reception frequency range.
Step 43: detect the wireless communication system that Received signal strength is corresponding, to export a testing result, the antenna configuration that wherein testing result instruction wireless communication system is corresponding and a transmit frequency band.
Step 44: according to the antenna configuration of testing result instruction, judges whether the coupling adjusting diversity antenna.If so, carry out step 45.If not, carry out step 47.
Step 45: read a match information, exports a control signal of the coupling for adjusting diversity antenna according to this.
Step 46: according to control signal, the coupling of adjustment diversity antenna, to meet antenna configuration.Wherein, when antenna configuration instruction diversity antenna is only for receiving, the coupling of adjustment diversity antenna, makes diversity antenna inoperation in a transmit frequency band, to promote main antenna and the diversity antenna isolation at transmit frequency band; And when antenna configuration instruction diversity antenna be not used in receive and launch time, the coupling of adjustment diversity antenna, makes diversity antenna inoperation in reception frequency range and transmit frequency band, to promote main antenna and diversity antenna at the isolation receiving frequency range and transmit frequency band.
Step 47: terminate.
In flow process 40, step 42 is the operation steps of main antenna ANT_m and diversity antenna ANT_d, and step 43 is the operation steps of detecting unit 12, and step 44 is the operation steps of rf processing circuitry 13 to 47.In flow process 40, the meaning of each unit and signal numerical value illustrates in aforementioned wireless communication device 10, repeats no more.By flow process 40, why radio communication device 10 can judge wireless communication system corresponding to the radiofrequency signal in environment, adjustment diversity antenna in automatic dynamic ground is in transmit frequency band or the coupling (such as weakening diversity antenna in transmit frequency band or the antenna performance receiving frequency range) receiving frequency range, to reduce the impact of diversity antenna on main antenna, be so equivalent to the isolation promoted between main antenna and diversity antenna.
In sum, why radio communication device of the present invention judges wireless communication system corresponding to the radiofrequency signal in environment, adjustment diversity antenna in automatic dynamic ground is in transmit frequency band or the coupling (such as weakening diversity antenna in transmit frequency band or the antenna performance receiving frequency range) receiving frequency range, to reduce the impact of diversity antenna on main antenna, be so equivalent to the isolation promoted between main antenna and diversity antenna.Thus, radio communication device of the present invention can for the demand of different wireless communication system, and the coupling of automatic dynamic ground adjustment diversity antenna, remains on optimized state to make the isolation between double antenna.
The foregoing is only preferred embodiment of the present invention, every equivalent variations of doing according to the scope of claims of the present invention and modification, all should belong to covering scope of the present invention.
Claims (14)
1. a radio communication device, this radio communication device comprises:
One main antenna, this main antenna operates in a reception frequency range, to be received in a Received signal strength of this reception frequency range;
One diversity antenna, this diversity antenna operates in this reception frequency range, to be received in this Received signal strength of this reception frequency range;
One adjustable match circuit, this adjustable match circuit is coupled to this main antenna and this diversity antenna, is used for, according to a control signal, adjusting the coupling of this main antenna and this diversity antenna;
One detecting unit, this detecting unit is coupled to this adjustable match circuit, be used for detecting a wireless communication system corresponding to this Received signal strength, to produce a testing result, wherein this testing result antenna configuration of indicating this wireless communication system corresponding and a transmit frequency band; And
One rf processing circuitry, this rf processing circuitry is coupled to this detecting unit and this adjustable match circuit, be used for this antenna configuration indicated according to this testing result, judge whether the coupling adjusting this diversity antenna, export this according to this and control signal to this adjustable match circuit, this adjustable match circuit is made to adjust the coupling of this diversity antenna, to meet this antenna configuration;
Wherein, this antenna configuration that this rf processing circuitry indicates according to this testing result, judge whether to weaken the antenna performance of both or both one of this diversity antenna in this transmit frequency band and this reception frequency range, to promote the isolation between this diversity antenna and this main antenna.
2. radio communication device as claimed in claim 1, wherein this adjustable match circuit comprises:
One first matching unit, this first matching unit is coupled to this main antenna, is used for mating this main antenna;
One second matching unit, this second matching unit is coupled to this diversity antenna, is used for mating this diversity antenna; And
One control unit, this control unit is coupled to this rf processing circuitry, this first matching unit and this second matching unit, be used for according to this control signal, export first, second adjustment signal respectively to first, second matching unit, to adjust the coupling of this main antenna and this diversity antenna respectively.
3. radio communication device as claimed in claim 2, wherein this first matching unit or this second matching unit comprise:
One first node, this first node is coupled to this main antenna or this diversity antenna;
One Section Point, this Section Point is coupled to this detecting unit;
One first electric capacity, this first electric capacity is coupled to this first node;
One second electric capacity, one end of this second electric capacity is coupled to this first node, and the other end is coupled to an earth terminal;
One first inductance, one end of this first inductance is coupled to this first electric capacity, and the other end is coupled to this Section Point; And
One second inductance, one end of this second inductance is coupled to this first node, and the other end is coupled to this earth terminal.
4. radio communication device as claimed in claim 3, wherein this first electric capacity and this second inductance form one first filter, this adjustable match circuit to adjust in a capacitance of this first electric capacity and an inductance value of this second inductance both or both one, to adjust this main antenna or this diversity antenna coupling in a low frequency frequency range.
5. radio communication device as claimed in claim 3, wherein this second electric capacity and this first inductance form one second filter, this adjustable match circuit to adjust in a capacitance of this second electric capacity and an inductance value of this first inductance both or both one, to adjust this main antenna or this diversity antenna coupling in a high-frequency band.
6. radio communication device as claimed in claim 3, wherein this first, second electric capacity and this first, second inductance are electric adjustable element, to adjust signal according to this first, second, adjust its capacitor and inductor value, one adjustable capacitance value scope of this first, second electric capacity is between 0.2 ~ 15 micromicrofarad, and an adjustable inductance value scope of this first, second inductance is between 1 ~ 33 nanohenry.
7. radio communication device as claimed in claim 1, wherein when this antenna configuration indicates this diversity antenna only for receiving, this control signal indicates this adjustable match circuit to adjust the coupling of this diversity antenna, to weaken the antenna performance of this diversity antenna at this transmit frequency band, make this diversity antenna inoperation in this transmit frequency band, to promote this main antenna and this diversity antenna isolation at this transmit frequency band.
8. radio communication device as claimed in claim 1, wherein when this antenna configuration indicates this diversity antenna be not used in reception and launch, this control signal indicates this adjustable match circuit to adjust the coupling of this diversity antenna, to weaken the antenna performance of this diversity antenna at this reception frequency range and this transmit frequency band, make this diversity antenna inoperation in this reception frequency range and this transmit frequency band, to promote this main antenna and this diversity antenna isolation at this reception frequency range and this transmit frequency band.
9. radio communication device as claimed in claim 1, wherein this rf processing circuitry comprises:
One RF processing unit, this RF processing unit is used for processing this Received signal strength, and produces this and transmit;
One storage element, this storage element is used for storage one match information; And
One central processing unit, this central processing unit is coupled to this RF processing unit, this detecting unit and this storage element, be used for this antenna configuration indicated according to this testing result, read this match information, to produce this control signal, and make this RF processing unit produce this to transmit to this main antenna and this diversity antenna.
10. adjust a method for antenna match, the method for this adjustment antenna match is used for a radio communication device, and this radio communication device comprises the main antenna and a diversity antenna that operate in a reception frequency range, and the method comprises:
This Received signal strength is received by this main antenna and this diversity antenna;
Detect the wireless communication system that this Received signal strength is corresponding, to export a testing result, wherein this testing result antenna configuration of indicating this wireless communication system corresponding and a transmit frequency band;
According to this antenna configuration that this testing result indicates, judging whether the coupling adjusting this diversity antenna, exporting a control signal of the coupling for adjusting this diversity antenna according to this; And
According to this control signal, adjust the coupling of this diversity antenna, to meet this antenna configuration;
Wherein, this antenna configuration indicates whether to weaken the antenna performance of both or both one of this diversity antenna in this transmit frequency band and this reception frequency range, to promote the isolation between this diversity antenna and this main antenna.
The method of 11. adjustment antenna match as claimed in claim 10, wherein according to this control signal, adjusts the coupling of this diversity antenna, comprises to meet this antenna configuration:
According to this control signal, export first, second adjustment signal respectively, to adjust the coupling of this main antenna and this diversity antenna respectively.
The method of 12. adjustment antenna match as claimed in claim 10, wherein when this antenna configuration indicates this diversity antenna only for receiving, adjust the coupling of this diversity antenna, to weaken the antenna performance of this diversity antenna at this transmit frequency band, make this diversity antenna inoperation in this transmit frequency band.
The method of 13. adjustment antenna match as claimed in claim 10, wherein when this antenna configuration indicates this diversity antenna be not used in reception and launch, adjust the coupling of this diversity antenna, to weaken the antenna performance of this diversity antenna at this reception frequency range and this transmit frequency band, make this diversity antenna inoperation in this reception frequency range and this transmit frequency band.
The method of 14. adjustment antenna match as claimed in claim 10, wherein according to this control signal, adjusts the coupling of this diversity antenna, comprises to meet this antenna configuration:
According to this antenna configuration that this testing result indicates, read a match information, to produce this control signal; And
According to this testing result and this match information, produce this and transmit to this main antenna and this diversity antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410017964.7A CN104779438A (en) | 2014-01-15 | 2014-01-15 | Wireless communication device and method for adjusting antenna matching |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410017964.7A CN104779438A (en) | 2014-01-15 | 2014-01-15 | Wireless communication device and method for adjusting antenna matching |
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| CN104779438A true CN104779438A (en) | 2015-07-15 |
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| CN201410017964.7A Pending CN104779438A (en) | 2014-01-15 | 2014-01-15 | Wireless communication device and method for adjusting antenna matching |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105929412A (en) * | 2016-06-08 | 2016-09-07 | 广东欧珀移动通信有限公司 | GNSS (Global Navigation Satellite System) antenna system of mobile terminal, mobile terminal and electronic equipment |
| CN106025502A (en) * | 2016-06-08 | 2016-10-12 | 广东欧珀移动通信有限公司 | GNSS antenna system of mobile terminal and mobile terminal |
| CN106025482A (en) * | 2016-06-08 | 2016-10-12 | 广东欧珀移动通信有限公司 | Global navigation satellite system (GNSS) antenna system of mobile terminal and mobile terminal |
| CN106093970A (en) * | 2016-06-08 | 2016-11-09 | 广东欧珀移动通信有限公司 | Mobile terminal and GNSS antenna system thereof and electronic equipment |
| CN106093969A (en) * | 2016-06-08 | 2016-11-09 | 广东欧珀移动通信有限公司 | Mobile terminal and GNSS antenna system thereof and electronic equipment |
| CN106093985A (en) * | 2016-06-08 | 2016-11-09 | 广东欧珀移动通信有限公司 | GNSS antenna system, mobile terminal and the electronic equipment of mobile terminal |
| CN106093982A (en) * | 2016-06-08 | 2016-11-09 | 广东欧珀移动通信有限公司 | Mobile terminal GNSS antenna system, the selection reminding method of external GNSS antenna and device |
| CN107395247A (en) * | 2017-07-20 | 2017-11-24 | 青岛海信移动通信技术股份有限公司 | The tuning methods and device of tunable antenna in a kind of terminal |
| CN108963456A (en) * | 2018-07-13 | 2018-12-07 | Oppo广东移动通信有限公司 | Antenna match control method and terminal device |
| CN108963424A (en) * | 2018-07-13 | 2018-12-07 | Oppo广东移动通信有限公司 | Antenna match control method and terminal device |
| CN109039397A (en) * | 2018-08-01 | 2018-12-18 | 维沃移动通信有限公司 | A kind of antenna circuit of mobile terminal, control method and device |
| CN109104219A (en) * | 2018-06-26 | 2018-12-28 | 努比亚技术有限公司 | Multiple antennas switching method, mobile terminal and computer storage medium |
| CN109525270A (en) * | 2018-11-23 | 2019-03-26 | 上海庆科信息技术有限公司 | Wiring board and wireless communication module |
| CN114024565A (en) * | 2021-09-29 | 2022-02-08 | 安徽蓝麦通信股份有限公司 | Radio frequency system design method suitable for Sub-6G |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106093982B (en) * | 2016-06-08 | 2018-03-16 | 广东欧珀移动通信有限公司 | The selection reminding method and device of mobile terminal GNSS antenna system, external GNSS antenna |
| CN106093969A (en) * | 2016-06-08 | 2016-11-09 | 广东欧珀移动通信有限公司 | Mobile terminal and GNSS antenna system thereof and electronic equipment |
| CN105929412A (en) * | 2016-06-08 | 2016-09-07 | 广东欧珀移动通信有限公司 | GNSS (Global Navigation Satellite System) antenna system of mobile terminal, mobile terminal and electronic equipment |
| CN106093985B (en) * | 2016-06-08 | 2019-05-14 | Oppo广东移动通信有限公司 | GNSS antenna system, mobile terminal and the electronic equipment of mobile terminal |
| CN106093970A (en) * | 2016-06-08 | 2016-11-09 | 广东欧珀移动通信有限公司 | Mobile terminal and GNSS antenna system thereof and electronic equipment |
| CN106093985A (en) * | 2016-06-08 | 2016-11-09 | 广东欧珀移动通信有限公司 | GNSS antenna system, mobile terminal and the electronic equipment of mobile terminal |
| CN106093982A (en) * | 2016-06-08 | 2016-11-09 | 广东欧珀移动通信有限公司 | Mobile terminal GNSS antenna system, the selection reminding method of external GNSS antenna and device |
| CN106025502A (en) * | 2016-06-08 | 2016-10-12 | 广东欧珀移动通信有限公司 | GNSS antenna system of mobile terminal and mobile terminal |
| WO2017211109A1 (en) * | 2016-06-08 | 2017-12-14 | 广东欧珀移动通信有限公司 | Gnss antenna system utilized in mobile terminal, mobile terminal, and electronic device |
| CN106025502B (en) * | 2016-06-08 | 2018-01-30 | 广东欧珀移动通信有限公司 | The GNSS antenna system and mobile terminal of mobile terminal |
| CN106025482A (en) * | 2016-06-08 | 2016-10-12 | 广东欧珀移动通信有限公司 | Global navigation satellite system (GNSS) antenna system of mobile terminal and mobile terminal |
| CN107395247A (en) * | 2017-07-20 | 2017-11-24 | 青岛海信移动通信技术股份有限公司 | The tuning methods and device of tunable antenna in a kind of terminal |
| CN109104219A (en) * | 2018-06-26 | 2018-12-28 | 努比亚技术有限公司 | Multiple antennas switching method, mobile terminal and computer storage medium |
| CN108963456A (en) * | 2018-07-13 | 2018-12-07 | Oppo广东移动通信有限公司 | Antenna match control method and terminal device |
| CN108963424A (en) * | 2018-07-13 | 2018-12-07 | Oppo广东移动通信有限公司 | Antenna match control method and terminal device |
| CN108963424B (en) * | 2018-07-13 | 2020-08-14 | Oppo广东移动通信有限公司 | Antenna matching control method and terminal equipment |
| CN109039397A (en) * | 2018-08-01 | 2018-12-18 | 维沃移动通信有限公司 | A kind of antenna circuit of mobile terminal, control method and device |
| CN109039397B (en) * | 2018-08-01 | 2021-03-19 | 维沃移动通信有限公司 | Antenna circuit of mobile terminal, control method and device |
| CN109525270A (en) * | 2018-11-23 | 2019-03-26 | 上海庆科信息技术有限公司 | Wiring board and wireless communication module |
| CN109525270B (en) * | 2018-11-23 | 2023-08-08 | 上海庆科信息技术有限公司 | Circuit board and wireless communication module |
| CN114024565A (en) * | 2021-09-29 | 2022-02-08 | 安徽蓝麦通信股份有限公司 | Radio frequency system design method suitable for Sub-6G |
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