CN102404881A - Dual-mode radio frequency receiving and transmitting device, filtering device and dual-mode terminal - Google Patents
Dual-mode radio frequency receiving and transmitting device, filtering device and dual-mode terminal Download PDFInfo
- Publication number
- CN102404881A CN102404881A CN2011103460056A CN201110346005A CN102404881A CN 102404881 A CN102404881 A CN 102404881A CN 2011103460056 A CN2011103460056 A CN 2011103460056A CN 201110346005 A CN201110346005 A CN 201110346005A CN 102404881 A CN102404881 A CN 102404881A
- Authority
- CN
- China
- Prior art keywords
- mode
- signal
- radio frequency
- frequency range
- lna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 19
- 238000010295 mobile communication Methods 0.000 claims description 7
- 230000010354 integration Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002040 relaxant effect Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/0057—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using diplexing or multiplexing filters for selecting the desired band
-
- 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
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a dual-mode radio frequency transceiver, a filtering device and a dual-mode terminal, wherein the multi-mode radio frequency transceiver at least comprises a Low Noise Amplifier (LNA) which is arranged for the same frequency band of a first mode signal and a second mode signal; the LNA is configured to receive signals of corresponding frequency bands of the first mode signal and the second mode signal in a time division multiplexing manner, amplify the received signals, and output the amplified signals. The LNA is a multiplexing LNA, so that the number of LNAs in the dual-mode radio frequency transceiver is reduced, the dual-mode radio frequency transceiver is integrated to a greater extent, the layout space is increased, the integration level of a multi-mode terminal comprising the dual-mode radio frequency transceiver is higher, and the miniaturization of the terminal is facilitated.
Description
Technical field
The present invention relates to mobile communication technology, relate in particular to a kind of bimodulus RF receiving/transmission device, filter and dual-mode terminal.
Background technology
Current; In the rf chip architectural schemes of dual-mode terminal, because country variant is inconsistent with the modulation coding mode of area employing, as adopting code division multiple access access way (Code Division Multiple Access; CDMA); (Wideband Code Division Multiple Access WCDMA), adopts global system for mobile communications (GSM) modulation system of frequency division multiple access, time division multiple access etc. to adopt the WCDMA access way.Be divided into several frequency ranges such as 850,900,1800,1900 in these coded systems again; Therefore in order to satisfy the demand in country variant and area; Generally speaking, comprise many groups low noise amplifier (LNA) in the rf chip, be used for receiving the radiofrequency signal under different systems and the frequency range situation.Fig. 1 shows a kind of time division duplex (TDD) and FDD (FDD) pattern of comprising; The front end acceptance frame composition of the WCDMA/GSM radio frequency bimodulus transceiving chip of 4 frequency ranges; It comprises duplexer module 100; W/G bimodulus rf chip 102, baseband chip 101, the receiving filter 120,122,124,126 under the GSM standard; Duplexer 104,106,108,110 under the WCDMA standard, 130,132,134,136,140,142,144,146 and 8 groups of low noise amplifiers 150,152,154,156,160,162,164,166 of match circuit.
In above-mentioned many group low noise amplifier (LNA) reality is not to use fully, causes LNA that redundancy is arranged to a certain extent, has increased the area of rf chip, has wasted arrangement space.
Summary of the invention
The embodiment of the invention provides a kind of bimodulus RF receiving/transmission device, filter and dual-mode terminal, to solve the not high problem of existing bimodulus RF receiving/transmission device integrated level.
The embodiment of the invention provides a kind of bimodulus RF receiving/transmission device; Be applied to the reception path of dual-mode terminal, said multi-mode radio frequency R-T unit is included as a low noise amplifier (LNA) of a similar frequency bands setting of first mode signal and second mode signal at least;
Said LNA is used for receiving with time-multiplexed mode the signal of the corresponding frequency band of said first mode signal and said second mode signal, and the said signal that receives is amplified back output.
Preferably, said first mode signal is global system for mobile communications (GSM) signal, TD SDMA (TD-SCDMA) signal or personal handhold telephone system (PHS) signal; Said second mode signal is WCDMA (WCDMA) signal or code division multiple access (CDMA) signal.
Preferably, said multi-mode radio frequency R-T unit is included as the LNA that each similar frequency bands of said first mode signal and said second mode signal only is provided with.
Preferably, said multi-mode radio frequency R-T unit comprises one or more among the following LNA:
A LNA for WCDMA1800 frequency range and the setting of GSM1800 frequency range;
A LNA for WCDMA1900 frequency range and the setting of GSM1900 frequency range;
A LNA for WCDMA850 frequency range and the setting of GSM850 frequency range; And
A LNA for WCDMA900 frequency range and the setting of GSM900 frequency range.
The embodiment of the invention also provides a kind of filter, is applied to the reception path of multimode terminal, and said filter is included as a duplexer of a similar frequency bands setting of first mode signal and second mode signal at least;
Said duplexer is used for receiving said first mode signal and second mode signal with time-multiplexed mode, and the signal of input is carried out exporting after the filtering.
Preferably, said first mode signal is global system for mobile communications (GSM) signal, TD SDMA (TD-SCDMA) signal or personal handhold telephone system (PHS) signal;
Said second mode signal is WCDMA (WCDMA) signal or code division multiple access (CDMA) signal.
Preferably, said filter is included as the duplexer that each similar frequency bands of said first mode signal and said second mode signal only is provided with.
Preferably, said filter comprises one or more in the following duplexer:
A duplexer for WCDMA1800 frequency range and the setting of GSM1800 frequency range;
A duplexer for WCDMA1900 frequency range and the setting of GSM1900 frequency range;
A duplexer for WCDMA850 frequency range and the setting of GSM850 frequency range; And
A duplexer for WCDMA900 frequency range and the setting of GSM900 frequency range.
The embodiment of the invention also provides a kind of dual-mode terminal; Comprise the duplexer module, filter, match circuit and the multi-mode radio frequency R-T unit that connect successively; And the baseband chip that all links to each other with said duplexer module and said multi-mode radio frequency R-T unit, wherein:
What said multi-mode radio frequency R-T unit adopted is above-mentioned multi-mode radio frequency R-T unit.
The embodiment of the invention provides a kind of dual-mode terminal; Comprise the duplexer module, filter, match circuit and the multi-mode radio frequency R-T unit that connect successively; And the baseband chip that all links to each other with said duplexer module and said multi-mode radio frequency R-T unit, wherein:
What said filter adopted is above-mentioned filter;
What said multi-mode radio frequency R-T unit adopted is above-mentioned multi-mode radio frequency R-T unit.
Because above-mentioned LNA is multiplexing LNA; Thereby reduced LNA quantity in the bimodulus RF receiving/transmission device; It is integrated more that the bimodulus RF receiving/transmission device is obtained; Increase arrangement space, and then made that the multimode terminal integrated level that comprises this bimodulus RF receiving/transmission device is higher, be more conducive to realize the miniaturization at terminal.
Description of drawings
Fig. 1 is the configuration diagram of the RF receiving/transmission device of existing WCDMA/GSM dual-mode terminal;
Fig. 2 is the configuration diagram of dual-mode terminal embodiment one of the present invention;
Fig. 3 is the configuration diagram of dual-mode terminal embodiment two of the present invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, hereinafter will combine accompanying drawing that embodiments of the invention are elaborated.Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.
The embodiment of the invention provides a kind of bimodulus RF receiving/transmission device; Be applied to the reception path of dual-mode terminal, said multi-mode radio frequency R-T unit is included as a low noise amplifier (LNA) of a similar frequency bands setting of first mode signal and second mode signal at least; Said LNA is used for receiving with time-multiplexed mode the signal of the corresponding frequency band of said first mode signal and said second mode signal, and the said signal that receives is amplified back output.
Wherein, said first mode signal can be global system for mobile communications (GSM) signal, TD SDMA (TD-SCDMA) signal or personal handhold telephone system (PHS) signal; Said second mode signal can be WCDMA (WCDMA) signal or code division multiple access (CDMA) signal.
In addition, said multi-mode radio frequency R-T unit can be included as the LNA that each similar frequency bands of said first mode signal and said second mode signal only is provided with.For example, when first mode signal is the GSM signal, when second mode signal is the WCDMA signal; Because GSM has four identical frequency ranges with WCDMA; Therefore, above-mentioned bimodulus RF receiving/transmission device can comprise four multiplexing LNA, so more helps improving the integrated level of chip; Certainly, also can comprise at least one multiplexing LNA.
When above-mentioned bimodulus RF receiving/transmission device comprises four multiplexing LNA; Said four LNA are respectively applied for the signal of reception WCDMA1900 frequency range or the signal of GSM1900 frequency range; Receive the signal of WCDMA1800 frequency range or the signal of GSM1800 frequency range, receive the signal of WCDMA850 frequency range or the signal and the signal that receives the WCDMA900 frequency range or the signal of GSM900 frequency range of GSM850 frequency range; When above-mentioned bimodulus RF receiving/transmission device comprised a multiplexing LNA, this LNA carried out the function of any LNA among above-mentioned four LNA.
Because above-mentioned LNA is multiplexing LNA, thereby has reduced LNA quantity in the bimodulus RF receiving/transmission device, it is integrated more to make that rf chip obtains, and has increased arrangement space, is satisfying under the situation of performance, is more conducive to realize the miniaturization at terminal.
As shown in Figure 2; Be the configuration diagram of dual-mode terminal embodiment one of the present invention, the dual-mode terminal among this embodiment and the difference of dual-mode terminal shown in Figure 1 are: the LNA170,172 in the bimodulus RF receiving/transmission device in the present embodiment, 174 and 176 is multiplexing LNA; Promptly for the WCDMA/GSM dual-mode terminal; The LNA of W850 and the LNA of GSM850 is multiplexing, the LNA of the LNA of W900 and GSM900 is multiplexing, the LNA of the LNA of W1800 and GSM1800 is multiplexing, the LNA of the LNA of W1900 and GSM1900 is multiplexing; Multiplexing LNA is mainly used in and receives radiofrequency signal under the WCDMA/GSM pattern, and the useful radiofrequency signal that under the situation that guarantees noise, will receive is amplified.
The rf chip that comprises the WCDMA/GSM dual-mode terminal of above-mentioned multiplexing LNA obtains at utmost integrated, has increased arrangement space, helps realizing the miniaturization at terminal.
The embodiment of the invention also provides a kind of filter, is applied to the reception path of multimode terminal, and said filter is included as a duplexer of a similar frequency bands setting of first mode signal and second mode signal at least; The receiving filter of said duplexer is used for receiving said first mode signal and second module by signal with time-multiplexed mode, and the signal of input is carried out exporting after the filtering.
Wherein, said first mode signal can be GSM signal, TD-SCDMA signal or PHS signal; Said second mode signal is WCDMA signal or CDMA signal.
This shows that above-mentioned duplexer can serve as filter to be used, promptly can to first mode signal for example the GSM signal filter.
Said filter can be included as the duplexer that each similar frequency bands of said first mode signal and said second mode signal only is provided with; For example, when first mode signal is the GSM signal, when second mode signal was the WCDMA signal, because GSM has four identical frequency ranges with WCDMA, therefore, above-mentioned filter can comprise four duplexers, so more helps improving the integrated level of filter.
As shown in Figure 3; Be the configuration diagram of dual-mode terminal embodiment two of the present invention, this dual-mode terminal comprises following a few part: duplexer 200, baseband chip 201; Bimodulus RF receiving/transmission device 202; WCDMA duplexer 204,206,208,210, match circuit 220,222,224,226 has comprised 230,232,234,236 4 multiplexing low noise amplifiers in the bimodulus RF receiving/transmission device 202.
Wherein, the conjugate impedance match value when match circuit is used for output impedance with front end passive device (duplexer) and transforms to maximum power transfer and the minimal reflection loss of LNA is made every effort to the noise factor minimum simultaneously.Two merit devices are accomplished emission and the reception of WCDMA under the time-division situation, under the GSM pattern, accomplish the effect of filter, and the filtering band disturbs outward.
In the reception link of the dual-mode terminal transceiving chip framework of the foregoing description; Electromagnetic wave signal receives laggard duplexer of going in the radio frequency front-end module by antenna; Under the control of baseband chip 201; Duplexer is selected the corresponding vein relaxing that receives, and radiofrequency signal is sent into the receiving loop of corresponding band.Wherein, 204,220 form the duplexer and the filter network of W/G850 frequency range, are mainly used in the signal that receives W850 or GSM850 frequency range, the outer interference signal of the band of filtering simultaneously; 206, the duplexer and the filter network of 222 composition W/G900 frequency ranges are mainly used in the signal that receives W900 or GSM900 frequency range, the outer interference signal of the band of filtering simultaneously; 208, the duplexer and the filter network of 224 composition W/G1800 frequency ranges are mainly used in the signal that receives W1800 or GSM1800 frequency range, the outer interference signal of the band of filtering simultaneously; 210, the duplexer and the filter network of 226 composition W/G1900 frequency ranges are mainly used in the signal that receives W1900 or GSM1900 frequency range, the outer interference signal of the band of filtering simultaneously; Filtered radiofrequency signal gets into built-in four low noise amplifiers 230,232,234,236 in the bimodulus RF receiving/transmission device 202, is used to receive RF small signals in the corresponding frequency band.In such cases, 4 groups of LNA under 4 groups of LNA under the GSM pattern and the WCDMA pattern are multiplexing, reached the effect of saving arrangement space.
Bimodulus framework in the embodiment of the invention is not limited to the WCDMA/GSM bimodulus, can be the CDMA/GSM bimodulus.GSM partly is not limited to the GSM standard, can be the standard of TD-SCDMA, personal handhold telephone system time-division access waies such as (PHS); It is the WCDMA standard that WCDMA partly is not limited to, and can be the standard that the CDMA equifrequency is tapped into mode.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to accomplish through program, said procedure can be stored in the computer-readable recording medium, like read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Above embodiment is only unrestricted in order to technical scheme of the present invention to be described, only with reference to preferred embodiment the present invention is specified.Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention, and do not break away from the spirit and the scope of technical scheme of the present invention, all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. bimodulus RF receiving/transmission device is applied to the reception path of dual-mode terminal, it is characterized in that, said multi-mode radio frequency R-T unit is included as the low noise amplifier (LNA) that a similar frequency bands of first mode signal and second mode signal is provided with at least;
Said LNA is used for receiving with time-multiplexed mode the signal of the corresponding frequency band of said first mode signal and said second mode signal, and the said signal that receives is amplified back output.
2. multi-mode radio frequency R-T unit according to claim 1 is characterized in that:
Said first mode signal is global system for mobile communications (GSM) signal, TD SDMA (TD-SCDMA) signal or personal handhold telephone system (PHS) signal;
Said second mode signal is WCDMA (WCDMA) signal or code division multiple access (CDMA) signal.
3. multi-mode radio frequency R-T unit according to claim 1 and 2 is characterized in that:
Said multi-mode radio frequency R-T unit is included as the LNA that each similar frequency bands of said first mode signal and said second mode signal only is provided with.
4. multi-mode radio frequency R-T unit according to claim 2 is characterized in that:
Said multi-mode radio frequency R-T unit comprises one or more among the following LNA:
A LNA for WCDMA1800 frequency range and the setting of GSM1800 frequency range;
A LNA for WCDMA1900 frequency range and the setting of GSM1900 frequency range;
A LNA for WCDMA850 frequency range and the setting of GSM850 frequency range; And
A LNA for WCDMA900 frequency range and the setting of GSM900 frequency range.
5. filter is applied to the reception path of multimode terminal, it is characterized in that, said filter is included as the duplexer that a similar frequency bands of first mode signal and second mode signal is provided with at least;
Said duplexer is used for receiving said first mode signal and second mode signal with time-multiplexed mode, and the signal of input is carried out exporting after the filtering.
6. filter according to claim 5 is characterized in that:
Said first mode signal is global system for mobile communications (GSM) signal, TD SDMA (TD-SCDMA) signal or personal handhold telephone system (PHS) signal;
Said second mode signal is WCDMA (WCDMA) signal or code division multiple access (CDMA) signal.
7. according to claim 5 or 6 described filters, it is characterized in that:
Said filter is included as the duplexer that each similar frequency bands of said first mode signal and said second mode signal only is provided with.
8. filter according to claim 6 is characterized in that:
Said filter comprises one or more in the following duplexer:
A duplexer for WCDMA1800 frequency range and the setting of GSM1800 frequency range;
A duplexer for WCDMA1900 frequency range and the setting of GSM1900 frequency range;
A duplexer for WCDMA850 frequency range and the setting of GSM850 frequency range; And
A duplexer for WCDMA900 frequency range and the setting of GSM900 frequency range.
9. dual-mode terminal comprises the duplexer module, filter, match circuit and the multi-mode radio frequency R-T unit that connect successively, and with said duplexer module and the baseband chip that said multi-mode radio frequency R-T unit all links to each other, it is characterized in that:
What said multi-mode radio frequency R-T unit adopted is like the described multi-mode radio frequency R-T unit of the arbitrary claim of claim 1-4.
10. dual-mode terminal comprises the duplexer module, filter, match circuit and the multi-mode radio frequency R-T unit that connect successively, and with said duplexer module and the baseband chip that said multi-mode radio frequency R-T unit all links to each other, it is characterized in that:
What said filter adopted is like the described filter of the arbitrary claim of claim 5-8;
What said multi-mode radio frequency R-T unit adopted is like the described multi-mode radio frequency R-T unit of the arbitrary claim of claim 1-4.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103460056A CN102404881A (en) | 2011-11-04 | 2011-11-04 | Dual-mode radio frequency receiving and transmitting device, filtering device and dual-mode terminal |
| PCT/CN2012/076686 WO2013063937A1 (en) | 2011-11-04 | 2012-06-11 | Dual-mode radio frequency tranceiving device, filtering device and dual-mode terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103460056A CN102404881A (en) | 2011-11-04 | 2011-11-04 | Dual-mode radio frequency receiving and transmitting device, filtering device and dual-mode terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102404881A true CN102404881A (en) | 2012-04-04 |
Family
ID=45886532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103460056A Pending CN102404881A (en) | 2011-11-04 | 2011-11-04 | Dual-mode radio frequency receiving and transmitting device, filtering device and dual-mode terminal |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102404881A (en) |
| WO (1) | WO2013063937A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013063938A1 (en) * | 2011-11-04 | 2013-05-10 | 中兴通讯股份有限公司 | Power amplification module, multi-mode radio frequency transceiver, duplexer and multi-mode terminal |
| WO2013063952A1 (en) * | 2011-11-04 | 2013-05-10 | 中兴通讯股份有限公司 | Filtering device, antenna switch module and dual-mode terminal |
| WO2013063937A1 (en) * | 2011-11-04 | 2013-05-10 | 中兴通讯股份有限公司 | Dual-mode radio frequency tranceiving device, filtering device and dual-mode terminal |
| CN104427656A (en) * | 2013-08-19 | 2015-03-18 | 中兴通讯股份有限公司 | Signal processing method and device and mobile terminal |
| CN105450271A (en) * | 2014-08-30 | 2016-03-30 | 展讯通信（上海）有限公司 | MIMO-based communication method and MIMO system |
| CN110287746A (en) * | 2019-06-21 | 2019-09-27 | 扬州大学 | Component, coding method, anti-collision method and assembly making method, application method |
| WO2021098674A1 (en) * | 2019-11-22 | 2021-05-27 | 维沃移动通信有限公司 | Radio frequency structure, and communication terminal |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6903606B1 (en) * | 2003-08-25 | 2005-06-07 | Rf Micro Devices, Inc. | DC offset correction using unused LNA |
| CN101198160A (en) * | 2007-05-25 | 2008-06-11 | 北京大学 | Method and device for implementing GNSS multi-module parallelism receiving at front end by using single path radio frequency |
| CN101207874A (en) * | 2006-12-18 | 2008-06-25 | 启碁科技股份有限公司 | Stand-by communication device simultaneous for code division multiple access and global mobile communication system |
| CN101237269A (en) * | 2007-01-30 | 2008-08-06 | 武汉虹信通信技术有限责任公司 | Method for realizing single-channel RF bidirectional amplification in TDD system |
| CN101316105A (en) * | 2008-06-11 | 2008-12-03 | 苏州中科半导体集成技术研发中心有限公司 | Multi-standard multi-module wireless transceiver |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1937447A (en) * | 2005-09-22 | 2007-03-28 | 北京东方信联科技有限公司 | Repeater suitable for TDD system mobile communication system |
| CN102404881A (en) * | 2011-11-04 | 2012-04-04 | 中兴通讯股份有限公司 | Dual-mode radio frequency receiving and transmitting device, filtering device and dual-mode terminal |
-
2011
- 2011-11-04 CN CN2011103460056A patent/CN102404881A/en active Pending
-
2012
- 2012-06-11 WO PCT/CN2012/076686 patent/WO2013063937A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6903606B1 (en) * | 2003-08-25 | 2005-06-07 | Rf Micro Devices, Inc. | DC offset correction using unused LNA |
| CN101207874A (en) * | 2006-12-18 | 2008-06-25 | 启碁科技股份有限公司 | Stand-by communication device simultaneous for code division multiple access and global mobile communication system |
| CN101237269A (en) * | 2007-01-30 | 2008-08-06 | 武汉虹信通信技术有限责任公司 | Method for realizing single-channel RF bidirectional amplification in TDD system |
| CN101198160A (en) * | 2007-05-25 | 2008-06-11 | 北京大学 | Method and device for implementing GNSS multi-module parallelism receiving at front end by using single path radio frequency |
| CN101316105A (en) * | 2008-06-11 | 2008-12-03 | 苏州中科半导体集成技术研发中心有限公司 | Multi-standard multi-module wireless transceiver |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013063938A1 (en) * | 2011-11-04 | 2013-05-10 | 中兴通讯股份有限公司 | Power amplification module, multi-mode radio frequency transceiver, duplexer and multi-mode terminal |
| WO2013063952A1 (en) * | 2011-11-04 | 2013-05-10 | 中兴通讯股份有限公司 | Filtering device, antenna switch module and dual-mode terminal |
| WO2013063937A1 (en) * | 2011-11-04 | 2013-05-10 | 中兴通讯股份有限公司 | Dual-mode radio frequency tranceiving device, filtering device and dual-mode terminal |
| CN104427656A (en) * | 2013-08-19 | 2015-03-18 | 中兴通讯股份有限公司 | Signal processing method and device and mobile terminal |
| CN105450271A (en) * | 2014-08-30 | 2016-03-30 | 展讯通信（上海）有限公司 | MIMO-based communication method and MIMO system |
| CN105450271B (en) * | 2014-08-30 | 2018-08-10 | 展讯通信（上海）有限公司 | A kind of communication means and mimo system based on MIMO |
| CN110287746A (en) * | 2019-06-21 | 2019-09-27 | 扬州大学 | Component, coding method, anti-collision method and assembly making method, application method |
| CN110287746B (en) * | 2019-06-21 | 2022-09-06 | 扬州大学 | Component, coding method, anti-collision method, component manufacturing method and application method |
| WO2021098674A1 (en) * | 2019-11-22 | 2021-05-27 | 维沃移动通信有限公司 | Radio frequency structure, and communication terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013063937A1 (en) | 2013-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102665202B1 (en) | Wireless transceiver with switch to reduce harmonic leakage | |
| CN105634569B (en) | Realize control circuit, the terminal of carrier wave polymerization and WIFI double frequency MIMO | |
| KR101836199B1 (en) | Multi-mode wireless terminal | |
| US9154171B2 (en) | Reconfigurable radio frequency circuits and methods of receiving | |
| US9270302B2 (en) | Carrier aggregation arrangement using triple antenna arrangement | |
| US9225382B2 (en) | Tunable filter front end architecture for non-contiguous carrier aggregation | |
| KR102108708B1 (en) | Antenna and rf front-end arrangement | |
| CN102404021A (en) | Duplex amplifying module, radio frequency front end module and multi-mode terminal | |
| CN108023609B (en) | Multi-mode multi-frequency transceiver, radio frequency front-end circuit and radio frequency system applying same | |
| US10111115B2 (en) | Front end system with lossy transmission line between front end module and transceiver | |
| US20140227982A1 (en) | Front end circuitry for carrier aggregation configurations | |
| US20140038531A1 (en) | High-frequency front-end circuit | |
| US10015701B2 (en) | Multimode dual-path terminal | |
| CN102510297A (en) | Power amplification module, multi-mode radio frequency transceiver, duplexer and multi-mode terminal | |
| CN102404881A (en) | Dual-mode radio frequency receiving and transmitting device, filtering device and dual-mode terminal | |
| US9184903B2 (en) | Systems and methods for processing time-division signals and frequency-division signals | |
| CN102404022A (en) | Power amplification module, radio frequency front end module and multi-mode terminal | |
| WO2013155495A1 (en) | Systems and methods for reducing filter insertion loss while maintaining out-of-band attenuation | |
| KR20160039437A (en) | Transceiver and method of transceiver thereof | |
| US20230275609A1 (en) | Radio-frequency front-end circuit and communication apparatus | |
| CN102148622A (en) | Method for eliminating mutual interference among terminal modes and terminal | |
| CN102420632A (en) | Radio frequency front end module, multimode terminal and multimode terminal signal sending method | |
| CN101213760B (en) | Apparatus and method for IIP3 control for a wireless transceiver | |
| CN201976093U (en) | Four-frequency range GSM (Global System for Mobile Communications) receiving and transmitting device and wireless terminal | |
| KR102215081B1 (en) | Method for processing transmitting signals and transmitter thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120404 |