CN101800566B - A kind of radio-frequency front-end system - Google Patents
A kind of radio-frequency front-end system Download PDFInfo
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- CN101800566B CN101800566B CN201010042616.7A CN201010042616A CN101800566B CN 101800566 B CN101800566 B CN 101800566B CN 201010042616 A CN201010042616 A CN 201010042616A CN 101800566 B CN101800566 B CN 101800566B
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Abstract
The embodiment of the present invention provides a kind of radio-frequency front-end system improving receiving sensitivity, and comprise single-pole n-throw switch, a n power amplifier, a n band filter, wherein n is more than or equal to 1; A described n power amplifier is separately positioned in n transmission channel, for being amplified by the signal of transmitting; N band filter is separately positioned in each receive path of n, and described band filter is used for passing through the signal of the reception meeting self frequency range and shielding the signal of other UHF band reception; Described single-pole n-throw switch is connected with antenna, for the transmission channel at gating n power amplifier place.Correspondingly, embodiments of the invention additionally provide a kind of method for the receiving and transmitting signal in radio-frequency front-end system, owing to only arranging switch in transmission channel, and eliminate the switch in receive path, reduce receiving radio frequency front end Insertion Loss, improve receiving sensitivity.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to a kind of radio-frequency front-end system.
Background technology
Two-way communication, needs certain duplex mode of operation, namely receives and launches separately transmission.Present communications field uses dual-mode mainly Frequency Division Duplexing (FDD) (FDD, Frequency Division Duplex) and time division duplex (TDD, Time Division Duplex), they are duplex modes conventional in various wireless system.In the terminal corresponding, exist and combine the duplex technology of two kinds of duplex modes, as GSM terminal, receive and transmit and take different frequency ranges, and transmit than Received signal strength multiple-time delay 3 slot transmission, be called frequency-division and time-division communication terminal.
In frequency-division and time-division communication terminal, generally adopt single-pole double-throw switch (SPDT) (applying for multiband is the switch that a hilted broadsword is thrown more) respectively in the time slot that transmitting and receiving are corresponding for one-segment, transmitting and receiving passage is selected in timesharing, thus realizes transmission duplex switching.
As shown in Figure 1, Transceiver is communication transceiver, radio-frequency (RF) front-end circuit is formed by power amplifier, band filter (Filter) and single-pole double-throw switch (SPDT), wherein single-pole double-throw switch (SPDT) common port is connected with antenna, by its transmitting branch at timesharing gated on power amplifier place and the receiving branch at band filter place, achieve the duplex received and launch and switch.
Because receiving branch will seal in single-pole double-throw switch (SPDT), a certain amount of Insertion Loss must be introduced, thus introduce the loss of sensitivity corresponding with Insertion Loss amount.Generally single-pole double-throw switch (SPDT) (for multiband apply be switch that a hilted broadsword throw) is integrated in power amplifier chip in existing implementation more, a contact must be designed to receiving branch, extra cost can be brought.
Summary of the invention
The embodiment of the present invention provides a kind of radio-frequency front-end system improving receiving sensitivity, and described radio-frequency front-end system is used for frequency-division and time-division communication terminal, and comprise single-pole n-throw switch, a n power amplifier, a n band filter, wherein n is more than or equal to 1; A described n power amplifier is separately positioned in n transmission channel, for being amplified by the signal of transmitting; N band filter is separately positioned in each receive path of n, and described band filter is used for passing through the signal of the reception meeting self frequency range and shielding the signal of other UHF band reception; Described single-pole n-throw switch is connected with antenna, for the transmission channel at gating n power amplifier place.
Correspondingly, embodiments of the invention additionally provide a kind of method for the receiving and transmitting signal in radio-frequency front-end system, wherein said radio-frequency front-end system is used for frequency-division and time-division communication terminal, described radio-frequency front-end system comprises single-pole n-throw switch, and described single-pole n-throw switch is connected with antenna, for gated transmission passage, described method comprises: during Received signal strength, disconnect whole single-pole n-throw switch, when transmitting, the transmission channel that single-pole n-throw switch gated transmission signal frequency range is corresponding.
As can be seen from the above technical solutions, only switch is set in transmission channel, and eliminates the switch in receive path, reduce receiving radio frequency front end Insertion Loss, improve receiving sensitivity.
Accompanying drawing explanation
Fig. 1 is the structure chart of radio-frequency front-end system in prior art;
Fig. 2 is the structural representation one of embodiment of the present invention radio-frequency front-end system;
Fig. 3 is the flow chart one of embodiment of the present invention receiving and transmitting signal method;
Fig. 4 is the structural representation two of embodiment of the present invention radio-frequency front-end system;
Fig. 5 is the flowchart 2 of embodiment of the present invention receiving and transmitting signal method.
Embodiment
For making object of the present invention, technical scheme and advantage clearly understand, to develop simultaneously embodiment referring to accompanying drawing, the present invention is described in further detail.
Be illustrated in figure 2 single communication frequency range radio frequency front-end device example structure figure of the present invention, comprise single-pole single-throw switch (SPST) 201, power amplifier 202, band filter 203; Wherein,
In transmission channel, single-pole single-throw switch (SPST) 201 is connected with antenna, by the transmission channel at single-pole single-throw switch (SPST) 201 gated on power amplifier 202 place, transmitting of transceiver 204 is launched;
In receive path, band filter 203 is connected with antenna, will receive signal and be sent in transceiver 204.
Particularly, when reception and transmitting, operating state is as follows:
During reception, single-pole single-throw switch (SPST) 201 disconnects, and the signal that antenna receives only flows into receive path;
During transmitting, single-pole single-throw switch (SPST) 201 is connected, and because band filter in receive path 203 has shielding character to the signal launched, the signal of described transmitting is flowed into antenna by the power amplifier 202 in transmission channel and launched.
From above-described embodiment, only switch is set in transmission channel, and eliminates the switch in receive path, reduce receiving radio frequency front end Insertion Loss, improve receiving sensitivity.
As those skilled in the art, can understand, also other processing modules can be provided with in transmission channel and receive path, be converted to digital signal as digital-to-analogue/analog-to-digital conversion module is used for that digital signal is converted to analog signal/analog signal, coding/decoding module is used for carrying out encoding and decoding etc. to signal.As one embodiment of the present of invention, transceiver can realize the function of other processing modules described.For the switching of receive path and transmission channel, time slot that can be corresponding according to transmitting and receiving, transmission channel and receive path are selected in timesharing.
Be illustrated in figure 3 the schematic flow sheet of the embodiment of a kind of single communication frequency range of the present invention receiving and transmitting signal method, adopt radio frequency front-end device as described in Figure 2 in this method embodiment, comprise single-pole single-throw switch (SPST) 201, power amplifier 202, band filter 203; In transmission channel, single-pole single-throw switch (SPST) 201 is connected with antenna, by the transmission channel at single-pole single-throw switch (SPST) 201 gated on power amplifier 202 place, transmitting of transceiver 204 is launched; In receive path, band filter 203 is connected with antenna, will receive signal and be sent in transceiver 204.
Step 301, receiving slot arrives or transmission time slot arrives, if receiving slot arrives perform step 302, if transmission time slot arrives, performs step 303;
The time slot that frequency-division and time-division communication terminal is corresponding according to transmitting and receiving, transmission channel and receive path are selected in timesharing.
Step 302, single-pole single-throw switch (SPST) 201 disconnects, and band filter 203 will receive signal and be sent in transceiver 204.
Step 303, single-pole single-throw switch (SPST) 201 is connected, and the signal of transmitting carries out amplifying by antenna and launching by the power amplifier 202 in transmission channel, and receive path midband filter 203 shields the signal launched.
Be illustrated in figure 4 the present invention's many communications bands radio frequency front-end device example structure figure, comprise, single pole multiple throw 401, multiple power amplifier 4021,4022 ~ 402n, multiple band filter 4031, a 4032 ~ 403n; In the present embodiment, n is more than or equal to 2, and described multiple power amplifier corresponds respectively to n frequency range and is applied in the transmission channel of each frequency range; Described multiple band filter corresponds respectively to n frequency range and is applied in the receive path of each frequency range, wherein,
The receive path of each frequency range is directly connected to antenna by each band filter,
Each band transmit passage is connected to antenna by single pole multiple throw 401, by the transmission channel at each power amplifier place of single pole multiple throw 401 gating, transmitting from this transmission channel of transceiver 404 is launched.
Particularly, N number of UHF band reception is with when transmitting, and wherein, N is more than or equal to 1 and is less than or equal to n, and radio frequency front-end device operating state is as follows:
When N number of UHF band reception signal, single pole multiple throw 401 all disconnects, isolation transmission channel, the receive path Received signal strength of this N number of frequency range, and the receive path of other frequency ranges shields by the band filter be arranged on wherein the signal received;
When certain N number of band transmit signal, by the transmission channel of the N number of frequency range of single pole multiple throw 401 gating, band filter is set in each receive path to the shielding character that transmitted, therefore transmits and to be launched by the corresponding transmission channel of N number of frequency range.
From above-described embodiment, only switch is set in transmission channel, and eliminates the switch in receive path, reduce receiving radio frequency front end Insertion Loss, improve receiving sensitivity.
As those skilled in the art, can understand, also other processing modules can be provided with in transmission channel and receive path, be converted to digital signal as digital-to-analogue/analog-to-digital conversion module is used for that digital signal is converted to analog signal/analog signal, coding/decoding module is used for carrying out encoding and decoding etc. to signal.As one embodiment of the present of invention, transceiver can realize the function of other processing modules described.For the switching of receive path and transmission channel, time slot that can be corresponding according to transmitting and receiving, transmission channel and receive path are selected in timesharing.
Be illustrated in figure 5 the schematic flow sheet of the embodiment of a kind of many communications bands receiving and transmitting signal of the present invention method, adopt radio frequency front-end device as described in Figure 4 in this method embodiment, comprise a single pole multiple throw 401, multiple power amplifier 4021,4022 ~ 402n, multiple band filter 4031,4032 ~ 403n; In the present embodiment, n is more than or equal to 2, and described multiple power amplifier corresponds respectively to n frequency range and is applied in the transmission channel of each frequency range; Described multiple band filter corresponds respectively to n frequency range and is applied in the receive path of each frequency range, and wherein, the receive path of each frequency range is directly connected to antenna by each band filter; Each band transmit passage is connected to antenna by single pole multiple throw 401, by the transmission channel at each power amplifier place of single pole multiple throw 401 gating, transmitting from this transmission channel of transceiver 404 is launched.In the present embodiment, N number of frequency range is carried out Received signal strength or transmits, and wherein, N is more than or equal to 1 and is less than or equal to n, specifically comprises:
Step 501, the receiving slot of N number of frequency range arrives or transmission time slot arrives, if receiving slot arrives perform step 502, if transmission time slot arrives, performs step 503;
The time slot that frequency-division and time-division communication terminal is corresponding according to transmitting and receiving, transmission channel and receive path are selected in timesharing.
Step 502, single pole multiple throw 401 all disconnects, and isolation transmission channel, the frequency band filter in the receive path of this N number of frequency range sends the signal of reception to transceiver, and the band filter in the receive path of other frequency ranges shields the signal received.
Step 503, the transmission channel of the N number of frequency range of single pole multiple throw 401 gating, power amplifier 402N in the transmission channel of described N number of frequency range amplifies the signal launched, and is gone out by antenna transmission, and the band filter in each receive path shields the signal launched.
More than lift preferred embodiment; the object, technical solutions and advantages of the present invention are further described; be understood that; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention; within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a radio-frequency front-end system, is characterized in that, described radio-frequency front-end system is used for frequency-division and time-division communication terminal, and comprise single-pole n-throw switch, a n power amplifier, a n band filter, wherein n is more than or equal to 1;
A described n power amplifier is separately positioned in n transmission channel, for being amplified by the signal of transmitting;
N band filter is separately positioned in each receive path of n, and described band filter is used for passing through the signal of the reception meeting self frequency range and shielding the signal of other UHF band reception;
Described single-pole n-throw switch is connected with antenna, for the transmission channel at gating n power amplifier place.
2. radio-frequency front-end system as claimed in claim 1, it is characterized in that, when n equals 1, single-pole n-throw switch is single-pole single-throw switch (SPST),
During Received signal strength, single-pole single-throw switch (SPST) is in off-state, and described band filter is used for that antenna is received the signal be sent in receive path and sends transceiver to;
When transmitting, single-pole single-throw switch (SPST) is in on-state, and the signal that described band filter is used for launching shields, and described power amplifier is used for the signal in transmission channel to amplify, and is sent to antenna, to be gone out by antenna transmission.
3. radio-frequency front-end system as claimed in claim 1, is characterized in that, when n is greater than 1;
When a UHF band reception signal, described single-pole n-throw switch all disconnects for isolating transmission channel, band filter in the receive path of this frequency range is used for conveying the received signals to transceiver, and the band filter in the receive path of other frequency ranges shields the signal received;
When a band transmit signal, the transmission channel of described this frequency range of single-pole n-throw switch gating, the power amplifier in the transmission channel of this frequency range is used for carrying out amplification process to the signal launched; The signal that a described n band filter is used for launching shields.
4. for a method for the receiving and transmitting signal in radio-frequency front-end system, it is characterized in that, described radio-frequency front-end system is used for frequency-division and time-division communication terminal, and radio-frequency front-end system comprises single-pole n-throw switch,
Described single-pole n-throw switch is connected with antenna, and for gated transmission passage, described method comprises:
During Received signal strength, disconnect whole single-pole n-throw switch,
When transmitting, the transmission channel that single-pole n-throw switch gated transmission signal frequency range is corresponding.
5. method as claimed in claim 4, it is characterized in that, when n equals 1, described single-pole n-throw switch is single-pole single-throw switch (SPST), also comprises power amplifier, band filter in described radio-frequency front-end system;
Described power amplifier is arranged in transmission channel, for being amplified by the signal of transmitting;
Described band filter is arranged in receive path, for passing through the signal of the reception meeting self frequency range and shielding the signal of other UHF band reception;
Then during described Received signal strength, be specially: disconnect single-pole single-throw switch (SPST), described band filter will receive signal and be sent in transceiver;
Described when transmitting, be specially connection single-pole single-throw switch (SPST), the signal of transmitting carries out amplifying by antenna and launching by the power amplifier in transmission channel, and receive path midband filter shields the signal launched.
6. method as claimed in claim 4, is characterized in that, when n is greater than 1, also comprise n power amplifier, a n band filter in described radio-frequency front-end system;
A described n power amplifier corresponds respectively to n frequency range and is applied in the transmission channel of each frequency range; A described n band filter corresponds respectively to the receive path that n frequency range is applied to each frequency range;
When then receiving a frequency band signals, be specially: single-pole n-throw switch all disconnects, the frequency band filter in the receive path of this frequency range sends the signal of reception to transceiver, and the band filter in the receive path of other frequency ranges shields the signal received;
When launching a frequency band signals, be specially: the transmission channel of this frequency range of single-pole n-throw switch gating, power amplifier in the transmission channel of this frequency range amplifies the signal launched, and is gone out by antenna transmission, and the band filter in each receive path shields the signal launched.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010042616.7A CN101800566B (en) | 2010-01-06 | 2010-01-06 | A kind of radio-frequency front-end system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010042616.7A CN101800566B (en) | 2010-01-06 | 2010-01-06 | A kind of radio-frequency front-end system |
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| CN101800566A CN101800566A (en) | 2010-08-11 |
| CN101800566B true CN101800566B (en) | 2015-09-09 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938080A (en) * | 2011-11-10 | 2013-02-20 | 厦门英诺尔电子科技股份有限公司 | Radio frequency (RF) information channel gating circuit of radio frequency identification (RFID) reader-writer |
| CN202759442U (en) * | 2012-07-11 | 2013-02-27 | 中兴通讯股份有限公司 | Radio frequency front-end circuit of multifrequency terminal and multifrequency terminal |
| US10461799B2 (en) * | 2012-11-08 | 2019-10-29 | Taiwan Semiconductor Manufacturing Company, Ltd. | Integrated transmitter and receiver front end module, transceiver, and related method |
| WO2016109949A1 (en) * | 2015-01-07 | 2016-07-14 | 华为技术有限公司 | Radio frequency front-end system, terminal device and base station |
| CN107371279A (en) * | 2016-05-12 | 2017-11-21 | 北京佰才邦技术有限公司 | A kind of base station radio-frequency device |
| CN108451487A (en) * | 2018-03-26 | 2018-08-28 | 深圳市资福医疗技术有限公司 | A kind of device ensuring capsule endoscope data transmit-receive stability |
| CN108965533B (en) | 2018-07-23 | 2021-01-08 | Oppo广东移动通信有限公司 | Radio frequency system, antenna switching control method and related product |
| CN110113059B (en) * | 2019-04-12 | 2021-10-22 | 博微太赫兹信息科技有限公司 | Device and method for reducing ADC sampling rate |
| CN110958027B (en) * | 2019-12-31 | 2022-03-15 | 深圳市广和通无线股份有限公司 | Radio frequency front-end device and radio frequency communication system |
| CN111245453A (en) * | 2020-01-16 | 2020-06-05 | 惠州Tcl移动通信有限公司 | Radio frequency structure and mobile terminal |
| CN218829922U (en) * | 2022-09-28 | 2023-04-07 | 荣耀终端有限公司 | Radio frequency module, radio frequency system and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1360760A (en) * | 1999-07-14 | 2002-07-24 | 菲尔特朗尼克Lk有限公司 | Structure of radio-frequency front end |
| CN1551658A (en) * | 2003-05-15 | 2004-12-01 | 乐金电子（中国）研究开发中心有限公 | Mobile communication terminal supporting three pattern communication mode |
| CN101064522A (en) * | 2006-04-24 | 2007-10-31 | 中兴通讯股份有限公司 | Multifunctional transceiver for time division duplexing system |
-
2010
- 2010-01-06 CN CN201010042616.7A patent/CN101800566B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1360760A (en) * | 1999-07-14 | 2002-07-24 | 菲尔特朗尼克Lk有限公司 | Structure of radio-frequency front end |
| CN1551658A (en) * | 2003-05-15 | 2004-12-01 | 乐金电子（中国）研究开发中心有限公 | Mobile communication terminal supporting three pattern communication mode |
| CN101064522A (en) * | 2006-04-24 | 2007-10-31 | 中兴通讯股份有限公司 | Multifunctional transceiver for time division duplexing system |
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Effective date of registration: 20171108 Address after: Metro Songshan Lake high tech Industrial Development Zone, Guangdong Province, Dongguan City Road 523808 No. 2 South Factory (1) project B2 -5 production workshop Patentee after: HUAWEI terminal (Dongguan) Co., Ltd. Address before: 518129 Longgang District, Guangdong, Bantian HUAWEI base B District, building 2, building No. Patentee before: Huawei Device Co., Ltd. |
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Address after: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province Patentee after: Huawei Device Co., Ltd. Address before: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province Patentee before: HUAWEI terminal (Dongguan) Co., Ltd. |
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