CN105846847A - Radio-frequency circuit for multi-mode terminal and multi-mode terminal - Google Patents
Radio-frequency circuit for multi-mode terminal and multi-mode terminal Download PDFInfo
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- CN105846847A CN105846847A CN201510016108.4A CN201510016108A CN105846847A CN 105846847 A CN105846847 A CN 105846847A CN 201510016108 A CN201510016108 A CN 201510016108A CN 105846847 A CN105846847 A CN 105846847A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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Abstract
The invention discloses a radio-frequency circuit for a multi-mode terminal and the multi-mode terminal. The radio-frequency circuit comprises a radio-frequency receiving-transmitting circuit module and a plurality of radio-frequency front-end circuit modules which are connected with the radio-frequency receiving-transmitting module respectively, wherein the radio-frequency front-end circuit modules are connected to a first-stage single multiplexer through corresponding impedance conversion circuit modules respectively; the first-stage single multiplexer is connected to an antenna through an antenna matching circuit module; and differences among impedance characteristics of different radio-frequency paths under a same frequency band before the antenna matching circuit module are limited within a preset range after the different radio-frequency paths are connected with corresponding impedance conversion circuit modules. According to the radio-frequency circuit, the different radio-frequency paths under the same frequency band are processed separately and access corresponding impedance conversion circuit modules respectively, and the differences among the impedance characteristics of the different radio-frequency paths before the antenna matching circuit module are limited within the preset range, so that the antenna can be matched with the different radio-frequency paths well, and the quadrant problem of multi-mode terminal antenna matching is solved.
Description
Technical field
The present invention relates to communicating terminal circuit design field, particularly relate to a kind of multimode terminal radio circuit and
Multimode terminal.
Background technology
At present multiple communication standard depositing, such as GSM, CDMA, WCDMA and LTE in mobile network,
In order to realize the compatibility of terminal, various multi mode terminals arise at the historic moment, but owing to different communication standard is public
The impedance operator that end presents is different, some existence notable differences, even falls at different quadrants, such as: GSM
The 850MHz under 850MHz and WCDMA standard under standard, though being all penetrating of 850MHz frequency range
Frequently signal, but due to from different radio frequency path, the impedance operator that two radio frequency paths are presented exists bigger
Difference, the impedance presented in 850MHz frequency range at these two radio frequency path ports of Smith chart is bent
Line is different, and distant, even falls at different quadrants；In this case, antenna adjustment will be unable to fit
From, if meeting the requirement of 850MHz under GSM standard, then cannot meet under WCDMA standard
The requirement of 850MHz, the antenna performance the most necessarily having a kind of communication standard is very poor.
Summary of the invention
In order to solve above-mentioned technical problem, the radio circuit and the multimode that the invention provides a kind of multimode terminal are whole
End, solves with the antenna performance caused because of the quadrant problem of antenna match in the case of the many radio frequency paths of frequency
The problem of difference.
According to one aspect of the present invention, it is provided that the radio circuit of a kind of multimode terminal, including:
RF transmit-receive circuit module；
The multiple RF front-end circuit modules being connected with RF transmit-receive circuit module respectively, each radio-frequency front-end electricity
Road module corresponds respectively to a radio frequency path, and each radio frequency path corresponds only to a frequency of a kind of communication standard
Section or the same frequency range corresponding to two or more communication standards；
Each RF front-end circuit module is connected to first by the impedance inverter circuit module of a correspondence respectively
The single multiplexer of level, first order list multiplexer is connected to antenna by an antenna-matching circuit module,
Wherein, after corresponding impedance inverter circuit module, the different radio frequency path under same frequency range is at antenna
The difference between impedance operator before matching circuit module is defined in a preset range.
Alternatively, this radio circuit also includes:
The base band being connected with RF transmit-receive circuit module and control circuit module, wherein base band and control circuit mould
Block is also connected with first order list multiplexer.
Alternatively, RF front-end circuit module and impedance inverter circuit module are one to one.
Alternatively, radio circuit also includes:
The second level list multiplexer connected one to one with impedance inverter circuit module；
Each RF front-end circuit module connects, by second with corresponding second level list multiplexer respectively
The single multiplexer of level is connected to the impedance inverter circuit module of correspondence；
Wherein, different corresponding to the second level list multiplexer corresponding to the radio frequency path of similar frequency bands.
Alternatively, radio circuit also includes:
The second level list multiplexer connected one to one with impedance inverter circuit module；
Each RF front-end circuit module connects, by second with corresponding second level list multiplexer respectively
The single multiplexer of level is connected to the impedance inverter circuit module of correspondence；
Wherein, different corresponding to the second level list multiplexer corresponding to the radio frequency path of similar frequency bands；
Each second level list multiplexer is connected with control circuit module with base band respectively.
Alternatively, communication standard includes: GSM standard, CDMA standard, WCDMA standard or LTE
At least two in standard.
Alternatively, frequency range includes: in 700MHz, 850MHz, 1900MHz or 2100MHz at least
Two.
Alternatively, after the impedance inverter circuit module through correspondence, the different radio frequency path under same frequency range
In the difference between impedance operator before antenna-matching circuit module is defined in a preset range particularly as follows:
The different radio frequency path under same frequency range impedance characteristic before antenna-matching circuit module is brought to
In the preset range of the same quadrant of Smith chart.
According to another aspect of the present invention, additionally provide a kind of multimode terminal, including radio frequency as above
Circuit.
Alternatively, this multimode terminal includes: multi mode terminal and multimode panel computer.
Embodiments of the invention provide the benefit that: the radio circuit of a kind of multimode terminal and multimode terminal, logical
Cross and the different radio frequency path of same frequency range is separately processed, be respectively connected to the impedance inverter circuit module of correspondence, will
Difference between different radio frequency path impedance operator before antenna-matching circuit module is defined in one and presets
In the range of, with realize antenna to different radio frequency path can matched well, solve multimode terminal antenna match
Quadrant problem.
Accompanying drawing explanation
Fig. 1 represents the circuit module schematic diagram of embodiments of the invention one；
Fig. 2 represents the circuit module schematic diagram of embodiments of the invention two.
Wherein in figure: 101, base band and control circuit module, 201, RF transmit-receive circuit module, 301,
RF front-end circuit module, 302, RF front-end circuit module, 303, RF front-end circuit module, 304,
RF front-end circuit module, 305, RF front-end circuit module, 401, second level list multiplexer, 402,
Second level list multiplexer, 501, impedance inverter circuit module, 502, impedance inverter circuit module, 503,
Impedance inverter circuit module, 504, impedance inverter circuit module, 505, impedance inverter circuit module, 601,
First order list multiplexer, 701, antenna-matching circuit module, 801, antenna.
Detailed description of the invention
It is more fully described the exemplary embodiment of the present invention below with reference to accompanying drawings.Although accompanying drawing shows
The exemplary embodiment of the present invention, it being understood, however, that may be realized in various forms the present invention and should be by
Embodiments set forth here is limited.On the contrary, it is provided that these embodiments are able to be best understood from this
Invention, and complete for the scope of the present invention can be conveyed to those skilled in the art.
Embodiment one
Along with the universal of mobile network and maturation, the communication standard being applied in mobile network is by single-frequency in early days
Section analog system develops into the many moulded-on types of current multi-frequency-band digital, therefore supports the multimode of plurality of communication schemes
Terminal is arisen at the historic moment.But due under different systems the radio frequency path of similar frequency bands in antenna-matching circuit module
There is the biggest difference in impedance characteristic before, even falls at different quadrants, thus produce multimode terminal sky
The quadrant problem of lines matching.In order to solve this problem, The embodiment provides a kind of multimode terminal
Radio circuit, including: base band and control circuit module；The radio frequency being connected with control circuit module with this base band
Transmission circuit module；The multiple RF front-end circuit modules being connected with RF transmit-receive circuit module；Before radio frequency
Terminal circuit module connects one to one, and the impedance inverter circuit module being connected with control circuit module with base band；
The first order list multiplexer being connected with multiple impedance inverter circuit modules；With this first order list multipath conversion
The antenna-matching circuit module that device connects；And the antenna being connected with antenna-matching circuit module.
Wherein, this base band and control circuit module are used for generating baseband signal, and control first order list multichannel and turn
The strobe state of parallel operation.RF transmit-receive circuit module is for base base band come with control circuit module transfer
Band signal is modulated to radiofrequency signal, and according to communication standard, and radio frequency is believed by the difference of radio frequency operation frequency range
Number distribution is to corresponding radio frequency path.RF front-end circuit module includes power amplifier, for being received by radio frequency
The radiofrequency signal that Power Generation Road module transfer comes is amplified and is sent to impedance inverter circuit.Impedance inverter circuit is used
In the impedance operator of corresponding RF front-end circuit module is changed, to realize at antenna-matching circuit mould
In before block, the difference of the impedance operator of each different radio frequency path is limited to a preset range, i.e. each is with frequency
The impedance operator of section radio frequency path reflectivity curve in Smith chart falls in same quadrant and characteristic is bent
Line is close or identical.Radiofrequency signal from different radio frequency path is merged by first order list multiplexer, and
Transmission is to antenna-matching circuit module.The port of this radio circuit with antenna is carried out by antenna-matching circuit module
Coupling, and transmitting signal is transmitted to antenna, send.
Wherein, antenna receives aerial radiofrequency signal, this radiofrequency signal is passed through antenna-matching circuit module
Transport to first order list multiplexer.First order list multiplexer is for according to communication standard and radio frequency work
Make the difference impedance inverter circuit module by this radiofrequency signal distribution to correspondence of frequency range.Corresponding impedance transformation
Circuit module realizes the radio frequency path impedance transformation to corresponding RF front-end circuit module of below antenna, and
By the radio signal transmission that receives to RF front-end circuit module.Corresponding is penetrated by RF front-end circuit module
Frequently information carries out low noise amplification, and sends the radiofrequency signal handled well to RF transmit-receive circuit module.Penetrate
Frequently the radiofrequency signal received is converted into base band and the discernible base of control circuit module by transmission circuit module
Band signal.Base band and control circuit module carry out a series of process to this baseband signal, thus obtain target letter
Breath.
It is worthy of note, the module in radio circuit in the embodiment of the present invention, such as: base band and control electricity
Road module, RF transmit-receive circuit module, RF front-end circuit, antenna-matching circuit module etc., all can use
Similar module of the prior art.
The radio circuit of the present invention, by separately being processed by the different radio frequency path of same frequency range, is respectively connected to correspondence
Impedance inverter circuit module, by different radio frequency path impedance operator before antenna-matching circuit module it
Between difference be defined in a preset range, with realize antenna to different radio frequency path can matched well, solve
Certainly with the quadrant problem of antenna match in the case of the many radio frequency paths of frequency in multimode terminal.
Alternatively, in current mobile network frequently with communication standard include: GSM standard, CDMA system
Formula, WCDMA standard and LTE standard, frequently with frequency range include: 700MHz, 850MHz,
1900MHz or 2100MHz etc., it is worthy of note, communication standard listed above and corresponding communication
The frequency range that standard is supported is not limited to above several, concrete according to depending on practical situation.The present embodiment one is with such as
The radio circuit of the present invention is illustrated by the circuit structure shown in Fig. 1.
Base band and control circuit module 101 and RF transmit-receive circuit module 201 and first order list multipath conversion
Device 601 is connected, and both can realize the base band signal transmission between RF transmit-receive circuit module 201, again
The gating to first order list multiplexer 601 can be realized control.
RF transmit-receive circuit module 201 one end is connected with control circuit module 102 with base band, and the other end is with many
Individual RF front-end circuit module connect, as respectively with the radio-frequency front-end being applicable to communication standard frequency range one once
Circuit module 301, it is adaptable to the RF front-end circuit module 302 of communication standard frequency range two once, is suitable for
The RF front-end circuit module 303 of the frequency range one under communication standard two and communication standard three, it is adaptable to communication
The RF front-end circuit module 304 of the frequency range two under standard two and communication standard three, it is adaptable to communication standard two
Or the RF front-end circuit module 305 of the frequency range three under communication standard three connects.Because different communication standards
Some can share a radio frequency path down, and such as communication standard two and communication standard three, some cannot share
Article one, radio frequency path, such as communication standard one and communication standard two.Each RF front-end circuit module correspondence respectively
In a radio frequency path, each radio frequency path corresponds only to a frequency range of a kind of communication standard or corresponding to two
The same frequency range of kind of above communication standard, concrete corresponded manner is according to whether can be true with shared radio frequency path
Fixed.
RF front-end circuit module 301, RF front-end circuit module 302, RF front-end circuit module 303,
RF front-end circuit module 304 distinguishes the most corresponding and impedance inverter circuit 501 with RF front-end circuit module 305,
Impedance inverter circuit 502, impedance inverter circuit 503, impedance inverter circuit 504 and impedance inverter circuit 505
Connect.
First order list multiplexer 601 respectively with impedance inverter circuit 501, impedance inverter circuit 502,
Impedance inverter circuit 503, impedance inverter circuit 504 and impedance inverter circuit 505 connect.First order list is many
Another port of road transducer 601 is connected with control circuit module 101 with base band, thus is controlled.
Antenna-matching circuit module 701 one end is connected with first order list multiplexer 601, the other end and sky
Line 801 connects.
When launching signal, base band and control circuit module 101 by base band signal transmission to be sent to radio frequency
Transmission circuit module 201；This baseband signal is converted into radiofrequency signal by RF transmit-receive circuit module 201, and
Communication standard according to modulated radio signal and the RF front-end circuit module of working frequency range transmission extremely correspondence, such as:
Modulated radio signal is communication standard one and frequency range one, then by this radio signal transmission to RF front-end circuit mould
Block 501；The radiofrequency signal received is carried out power amplification by RF front-end circuit module, and transmits to correspondence
Impedance inverter circuit module；Impedance inverter circuit module by this radio signal transmission to first order list multipath conversion
Device 601, and send to antenna 801 via antenna-matching circuit module 701.
When receiving radiofrequency signal, the radiofrequency signal received is passed through antenna-matching circuit module by antenna 801
701 are sent to first order list multiplexer 601.First order list multiplexer 601 is by base band and control
The radio frequency path controlling gating correspondence of circuit module 101, and this radiofrequency signal is sent to corresponding impedance
Change-over circuit module, RF front-end circuit module, such as: the radio frequency being applicable to communication standard one frequency range one is believed
Number send to impedance inverter circuit module 501, RF front-end circuit module 301.Through RF front-end circuit mould
Block transmits to RF transmit-receive circuit module 201 after this radiofrequency signal is carried out low noise amplification process, and via
It is demodulated by RF transmit-receive circuit module 201, and radiofrequency signal is converted into baseband signal, and transmission is to base
Band and control circuit module 101, it is achieved the reception to target radio frequency signal.
Embodiment two
In order to improve the integrated of radio circuit further.The present embodiment two is with circuit structure as shown in Figure 2
The radio circuit of the present invention is illustrated.
Base band and control circuit module 101 and RF transmit-receive circuit module 201 and first order list multipath conversion
Device 601 is connected, and both can realize the base band signal transmission between RF transmit-receive circuit module 201, again
The gating to first order list multiplexer 601 can be realized control.
RF transmit-receive circuit module 201 one end is connected with control circuit module 102 with base band, and the other end is with many
Individual RF front-end circuit module connect, as respectively with the radio-frequency front-end being applicable to communication standard frequency range one once
Circuit module 301, it is adaptable to the RF front-end circuit module 302 of communication standard frequency range two once, is suitable for
The RF front-end circuit module 303 of the frequency range one under communication standard two and communication standard three, it is adaptable to communication
The RF front-end circuit module 304 of the frequency range two under standard two and communication standard three, it is adaptable to communication standard two
Or the RF front-end circuit module 305 of the frequency range three under communication standard three connects.Because different communication standards
Some can share a radio frequency path down, and such as communication standard two and communication standard three, some cannot share
Article one, radio frequency path, such as communication standard one and communication standard two.Each RF front-end circuit module correspondence respectively
In a radio frequency path, each radio frequency path corresponds only to a frequency range of a kind of communication standard or corresponding to two
The same frequency range of kind of above communication standard, concrete corresponded manner is according to whether can be true with shared radio frequency path
Fixed.
Whether can the principle on common road according to the same frequency range under different communication standard, it is impossible to enough common roads
Similar frequency bands separately processes, will RF front-end circuit module 301 and RF front-end circuit module 302 and the
Two grades of single multiplexers 401 connect；By RF front-end circuit module 303, RF front-end circuit module 304
It is connected with another second level list multiplexer 402 with RF front-end circuit module 305.
Second level list multiplexer 401 is connected with corresponding impedance inverter circuit module 501, the second level
Single multiplexer 402 connects with corresponding impedance inverter circuit 502.
First order list multiplexer 601 respectively with impedance inverter circuit 501 and impedance inverter circuit 502
Connect.Another port of first order list multiplexer 601 is connected with control circuit module 101 with base band,
Thus be controlled.
Antenna-matching circuit module 701 one end is connected with first order list multiplexer 601, the other end and sky
Line 801 connects.
When launching signal, base band and control circuit module 101 by base band signal transmission to be sent to radio frequency
Transmission circuit module 201；This baseband signal is converted into radiofrequency signal by RF transmit-receive circuit module 201, and
Communication standard according to modulated radio signal and the RF front-end circuit module of working frequency range transmission extremely correspondence, such as:
Modulated radio signal is communication standard one and frequency range one, then by this radio signal transmission to RF front-end circuit mould
Block 501；The radiofrequency signal received is carried out power amplification by RF front-end circuit module, and transmits to correspondence
Second level list multiplexer, impedance inverter circuit module；This radiofrequency signal is passed by impedance inverter circuit module
Deliver to first order list multiplexer 601, and send to antenna 801 via antenna-matching circuit module 701.
When receiving radiofrequency signal, the radiofrequency signal received is passed through antenna-matching circuit module by antenna 801
701 are sent to first order list multiplexer 601.First order list multiplexer 601 is by base band and control
The radio frequency path controlling gating correspondence of circuit module 101, and this radiofrequency signal is sent to corresponding impedance
Change-over circuit module, second level list multiplexer, RF front-end circuit module, such as: communication will be applicable to
The radiofrequency signal of standard one frequency range one sends to impedance inverter circuit module 501, second level list multiplexer
401, RF front-end circuit module 301.Through RF front-end circuit module, this radiofrequency signal is carried out low noise
Transmit after processing and amplifying to RF transmit-receive circuit module 201, and via RF transmit-receive circuit module 201 to it
It is demodulated, radiofrequency signal is converted into baseband signal, transmit to base band and control circuit module 101, real
The now reception to target radio frequency signal.
According to another embodiment of the present invention, additionally provide a kind of multimode terminal, including radio frequency as above
Circuit, this multimode terminal includes: support multi mode terminal and the multimode panel computer of multiple communication standard.
Above-described is the preferred embodiment of the present invention, it should be pointed out that for the ordinary people of the art
For Yuan, some improvements and modifications can also be made under without departing from principle premise of the present invention, these
Improvements and modifications are the most within the scope of the present invention.
Claims (10)
1. the radio circuit of a multimode terminal, it is characterised in that including:
RF transmit-receive circuit module；
The multiple RF front-end circuit modules being connected with described RF transmit-receive circuit module respectively, before each radio frequency
Terminal circuit module corresponds respectively to a radio frequency path, and each described radio frequency path corresponds only to a kind of communication standard
A frequency range or corresponding to the same frequency range of two or more communication standards；
Each described RF front-end circuit module is connected to by the impedance inverter circuit module of a correspondence respectively
First order list multiplexer, described first order list multiplexer is connected by an antenna-matching circuit module
To antenna, wherein, after corresponding impedance inverter circuit module, the different radio frequency under same frequency range leads to
Difference between the impedance operator before described antenna-matching circuit module of the road is defined in a preset range.
Radio circuit the most according to claim 1, it is characterised in that also include:
The base band being connected with described RF transmit-receive circuit module and control circuit module, wherein said base band and control
Circuit module processed is also connected with described first order list multiplexer.
Radio circuit the most according to claim 1 and 2, it is characterised in that described radio-frequency front-end electricity
Road module and described impedance inverter circuit module are one to one.
Radio circuit the most according to claim 1, it is characterised in that also include:
The second level list multiplexer connected one to one with described impedance inverter circuit module；
Each described RF front-end circuit module connects with corresponding described second level list multiplexer respectively,
The impedance inverter circuit module of correspondence it is connected to by described second level list multiplexer；
Wherein, different corresponding to the described second level list multiplexer corresponding to the radio frequency path of similar frequency bands.
Radio circuit the most according to claim 2, it is characterised in that also include:
The second level list multiplexer connected one to one with described impedance inverter circuit module；
Each described RF front-end circuit module connects with corresponding described second level list multiplexer respectively,
The impedance inverter circuit module of correspondence it is connected to by described second level list multiplexer；
Wherein, different corresponding to the described second level list multiplexer corresponding to the radio frequency path of similar frequency bands；
Each described second level list multiplexer is connected with control circuit module with described base band respectively.
Radio circuit the most according to claim 1, it is characterised in that described communication standard includes:
At least two in GSM standard, CDMA standard, WCDMA standard or LTE standard.
Radio circuit the most according to claim 1, it is characterised in that described frequency range includes: 700MHz,
At least two in 850MHz, 1900MHz or 2100MHz.
Radio circuit the most according to claim 1, it is characterised in that turning through corresponding impedance
After changing circuit module, the resistance before described antenna-matching circuit module of the different radio frequency path under same frequency range
It is interior particularly as follows: the different radio frequency path under same frequency range exists that difference between anti-characteristic is defined in a preset range
Impedance characteristic before described antenna-matching circuit module is brought to the same quadrant of Smith chart
In preset range.
9. a multimode terminal, it is characterised in that include the radio frequency as described in any one of claim 1～8
Circuit.
Multimode terminal the most according to claim 9, it is characterised in that described multimode terminal includes:
Multi mode terminal and multimode panel computer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510016108.4A CN105846847A (en) | 2015-01-13 | 2015-01-13 | Radio-frequency circuit for multi-mode terminal and multi-mode terminal |
| PCT/CN2015/090448 WO2016112711A1 (en) | 2015-01-13 | 2015-09-23 | Radio frequency circuit in multi-mode terminal, and multi-mode terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510016108.4A CN105846847A (en) | 2015-01-13 | 2015-01-13 | Radio-frequency circuit for multi-mode terminal and multi-mode terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105846847A true CN105846847A (en) | 2016-08-10 |
Family
ID=56405211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510016108.4A Withdrawn CN105846847A (en) | 2015-01-13 | 2015-01-13 | Radio-frequency circuit for multi-mode terminal and multi-mode terminal |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105846847A (en) |
| WO (1) | WO2016112711A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110086482A (en) * | 2018-01-25 | 2019-08-02 | 鹤壁天海电子信息系统有限公司 | Antenna matching unit |
| CN110855310A (en) * | 2018-07-26 | 2020-02-28 | 西安中兴新软件有限责任公司 | Matching circuit, terminal and matching method |
| CN110971207A (en) * | 2019-11-19 | 2020-04-07 | 普联技术有限公司 | Impedance tuning device, antenna device and terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080261651A1 (en) * | 2007-01-15 | 2008-10-23 | Nakahashi Yusuke | Multi-mode communication apparatus for selectively using w-cdma system and gsm system |
| CN102197601A (en) * | 2008-10-28 | 2011-09-21 | 索尼爱立信移动通讯有限公司 | Variable impedance matching network and method for the same |
| CN102204100A (en) * | 2008-11-05 | 2011-09-28 | 日立金属株式会社 | High-frequency circuit, high-frequency part, and multiband communication device |
| CN104079312A (en) * | 2013-03-29 | 2014-10-01 | 智邦科技股份有限公司 | Transceiver, impedance adjusting device, and impedance adjusting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8750810B2 (en) * | 2009-07-24 | 2014-06-10 | Qualcomm Incorporated | Power amplifier with switched output matching for multi-mode operation |
| CN101835250A (en) * | 2010-04-30 | 2010-09-15 | 华为终端有限公司 | Device and method for reducing power consumption of terminal |
| CN104104405B (en) * | 2014-07-07 | 2017-01-25 | 普联技术有限公司 | Self-adaptive impedance matching device, communication system and impedance matching method |
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2015
- 2015-01-13 CN CN201510016108.4A patent/CN105846847A/en not_active Withdrawn
- 2015-09-23 WO PCT/CN2015/090448 patent/WO2016112711A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080261651A1 (en) * | 2007-01-15 | 2008-10-23 | Nakahashi Yusuke | Multi-mode communication apparatus for selectively using w-cdma system and gsm system |
| CN102197601A (en) * | 2008-10-28 | 2011-09-21 | 索尼爱立信移动通讯有限公司 | Variable impedance matching network and method for the same |
| CN102204100A (en) * | 2008-11-05 | 2011-09-28 | 日立金属株式会社 | High-frequency circuit, high-frequency part, and multiband communication device |
| CN104079312A (en) * | 2013-03-29 | 2014-10-01 | 智邦科技股份有限公司 | Transceiver, impedance adjusting device, and impedance adjusting method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110086482A (en) * | 2018-01-25 | 2019-08-02 | 鹤壁天海电子信息系统有限公司 | Antenna matching unit |
| CN110086482B (en) * | 2018-01-25 | 2021-03-26 | 鹤壁天海电子信息系统有限公司 | Antenna matching device |
| CN110855310A (en) * | 2018-07-26 | 2020-02-28 | 西安中兴新软件有限责任公司 | Matching circuit, terminal and matching method |
| CN110971207A (en) * | 2019-11-19 | 2020-04-07 | 普联技术有限公司 | Impedance tuning device, antenna device and terminal |
| CN110971207B (en) * | 2019-11-19 | 2023-11-24 | 普联技术有限公司 | Impedance tuning device, antenna device and terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016112711A1 (en) | 2016-07-21 |
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Application publication date: 20160810 |
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