CN101938291A - Device for transceiver radio frequency link - Google Patents
Device for transceiver radio frequency link Download PDFInfo
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- CN101938291A CN101938291A CN2010102603058A CN201010260305A CN101938291A CN 101938291 A CN101938291 A CN 101938291A CN 2010102603058 A CN2010102603058 A CN 2010102603058A CN 201010260305 A CN201010260305 A CN 201010260305A CN 101938291 A CN101938291 A CN 101938291A
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- radio frequency
- circulator
- duplexer
- frequency link
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Abstract
The invention discloses a device for a transceiver radio frequency link, which comprises a donor antenna, a circulator 1, a circulator 2, a duplexer 1, a duplexer 2, a transceiver radio frequency link and a retransmission antenna. The donor antenna which is used for receiving a downlink signal of a base station and transmitting an uplink signal of a mobile phone is connected with the circulator 1, and signals from the circulator 1 pass through the duplexer 1, the transceiver radio frequency link and the duplexer 2 to reach the circulator 1 again, so one transceiver loop is formed; and the retransmission antenna which is used for receiving the uplink signal of the mobile phone and transmitting the downlink signal of the base station is connected with the circulator 2, and signals from the circulator 2 pass through the duplexer 1, the transceiver radio frequency link and the duplexer 2 to reach the circulator 2 again, so the other transceiver loop is formed; therefore, the function for sharing the same radio frequency circuit by the uplink and the downlink is realized. The device for the transceiver radio frequency link has the advantages of sharing low noise amplifiers, power amplifiers and other components in the uplink and the downlink, saving the component cost, reducing the equipment volume, simplifying the production technology and improving the equipment efficiency.
Description
Technical field
The present invention relates to the mobile communication system field, mainly is a kind of device of transmit-receive sharing radio frequency link.
Background technology
Which kind of working form no matter radio system in the mobile communication adopt, and up link and down link are all arranged.In network optimization equipment repeater, radiofrequency signal is two-way transparent transmission.Both the downstream signal of base station is received the back by the amplification new emission of having laid equal stress on, again the upward signal of travelling carriage was received the back by the amplification new emission of laying equal stress on, realized the covering of network black spots.Up link and down link all comprise parts such as LNA, frequency-selecting unit, power amplifier, and these parts are that up-downgoing separates, and do not have shared.Can index be more or less the same because the up-downgoing radio frequency of repeater is new, two links of this branch realize that the structure of up-downgoing transmission seems complicated especially and wastes.
At present, for work is the communication system of TDD (time division duplex), as TD-SCDMA, has only up link or down link at any one time in work, and the working frequency range of up-downgoing is the same, can utilize the radio-frequency (RF) switch battle array to realize the function of transmit-receive sharing radio frequency link.But for the communication system that adopts FDD (Frequency Division Duplexing (FDD)), as GSM, at any one time, work when up link and down link are independent same, adopting simple radio-frequency (RF) switch battle array is to realize the function of transmit-receive sharing radio frequency link.
Summary of the invention
Technical problem to be solved by this invention is the communication system working form difficult problem that time transmitting-receiving radio frequency link can not be shared for FDD, the invention provides a kind of device of transmit-receive sharing radio frequency link, is specially adapted in the network optimization equipment repeater.
The present invention solves the technical scheme that its technical problem adopts: the device of this transmit-receive sharing radio frequency link, the radio frequency link and the retransmitting antenna that comprise donor antenna, circulator 1, circulator 2, duplexer 1, duplexer 2, transmit-receive sharing, the donor antenna that is used to receive the downstream signal of base station and launch the upward signal of mobile phone is connected with circulator 1, begin radio frequency link, duplexer 2 again to circulator 1 by circulator 1, form one and receive and dispatch the loop through duplexer 1, transmit-receive sharing; The retransmitting antenna that is used to receive the downstream signal of the upward signal of mobile phone and transmitting base station is connected with circulator 2, begins radio frequency link, duplexer 2 through duplexer 1, transmit-receive sharing again to circulator 2 by circulator 2, forms another transmitting-receiving loop; Realize the function of up link and downlink shared the same radio circuit.Save the components and parts cost, reduced the volume of equipment, simplified production technology, improved the efficient of equipment.
The radio frequency link of described transmit-receive sharing is used for the uplink and downlink signals of communication system is carried out processing and amplifying, is amplified to the coverage desired power.
At the repeater of not selecting band or frequency-selecting function, shared LNA of the radio frequency link of transmit-receive sharing and power amplifier; In the repeater with choosing band or frequency-selecting function, the radio frequency link of transmit-receive sharing is shared, and up choosing band adopts different radio frequency links with descending choosing band.
Described circulator 1 is used for separating of receiving and transmitting signal with circulator 2, and the signal flow that antenna is received amplifies to the radio frequency link of transmit-receive sharing, and the radiofrequency signal after amplifying by radio frequency link simultaneously flows to another antenna and launches.
Described duplexer 1 and duplexer 2 are used for that the radiofrequency signal of the radio frequency link that enters transmit-receive sharing is carried out frequency to be selected, and selects the up-downgoing frequency range of communication system regulation, the various spurious emissions of filtering, and receiving and transmitting signal isolated.
The effect that the present invention is useful is: the present invention proposes a kind of device of transmit-receive sharing radio frequency link, makes parts such as LNA in the uplink downlink, power amplifier shared.Save the components and parts cost, reduced the volume of equipment, simplified production technology, improved the efficient of equipment.
Description of drawings
Fig. 1 is a principle of the invention block diagram;
Fig. 2 is shared mode one schematic diagram;
Fig. 3 is shared mode two schematic diagrames;
Fig. 4 is the LNA schematic diagram;
Fig. 5 is the power amplifier schematic diagram;
Fig. 6 selects the tape cell schematic diagram.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
The present invention is directed to the repeater radio frequency newly can characteristics, the transmit-receive sharing radio frequency link comprises radio frequency link, the retransmitting antenna of donor antenna, circulator, duplexer, transmit-receive sharing.
Circulator is the non-reciprocal devices that several ends are arranged, such as: from 1 port input signal, signal can only equally, can only be exported from 3 ports from the signal of 2 ports input, by that analogy from the output of 2 ports.Its outstanding feature is the one-way transmission radio frequency energy.The present invention utilizes these characteristics to realize the separation of receiving and transmitting signal just, has both guaranteed that the signal flow that antenna receives amplified to the radio frequency link of transmit-receive sharing, guarantees that again flowing to another antenna by the radiofrequency signal after the radio frequency link amplification launches.In the theory diagram shown in the accompanying drawing 1, circulator 1 is a clockwise direction transmitting radio frequency signal energy, and circulator 2 is counter-clockwise direction transmitting radio frequency signal energy.
Duplexer carries out frequency to the radiofrequency signal of the radio frequency link that enters transmit-receive sharing and selects, and selects the up-downgoing frequency range of communication system regulation, the various spurious emissions of filtering, and receiving and transmitting signal isolated, avoid the mutual interference of uplink and downlink signals phase, guarantee to receive and emission energy while operate as normal.
The radio frequency link of transmit-receive sharing carries out processing and amplifying to the uplink and downlink signals of communication system, is amplified to the coverage desired power.It has two kinds of shared modes.A kind of mode is not select the repeater of band or frequency-selecting function, and LNA (as shown in Figure 4) and power amplifier (as shown in Figure 5) are all shared, as shown in Figure 2; Another kind of mode is the repeater with choosing band or frequency-selecting function, and it is shared having only LNA and power amplifier, and up choosing band adopts different radio frequency links with descending choosing band (as shown in Figure 6), as shown in Figure 3.
LNA is mainly carried out low noise to the received signal and is amplified, and particularly the noise factor of the first order (2U1) is the key of the noise factor of whole link.Whole LNA includes three grades of amplifications (2U1,2U3,2U5), an analog attenuator (2U2), a digital pad (2U4).
Power amplifier mainly carries out power amplification to the received signal, comprises three grades of power amplifications (5U5,1U1,1U2), a numerical-control attenuator (5U1), output isolator (ISO).
The circuit that selects the tape cell up-downgoing is the same, but the frequency band of selecting is different, comprise two frequency mixers (4U2,4U5), two radio-frequency filters (4F1,4F3), an intermediate frequency Surface Acoustic Wave Filter (4F2), two intermediate frequency amplifiers (4U3,4U4), two radio frequency amplifiers (4U1,4U6).Radiofrequency signal transforms to intermediate-freuqncy signal by frequency mixer, utilizes the high squareness factor of Surface Acoustic Wave Filter to select needed frequency band, and then by frequency mixer conversion retroeflection frequency signal.
Donor antenna is mainly used in downstream signal that receives the base station and the upward signal of launching mobile phone.
Retransmitting antenna is mainly used in the upward signal of reception mobile phone and the downstream signal of transmitting base station.
Signal flow of the present invention is to being: the downstream signal of base station enters circulator 1 after being received by donor antenna, because the clockwise unidirectional transmission property of circulator 1, downstream signal enters after the TX end filtering of duplexer 1 in the output of the ANT of duplexer end, then amplify by the transmit-receive sharing radio frequency link, downstream signal outputs to circulator 2 at the TX of duplexer 2 end after entering the ANT end filtering of duplexer 2 then, because the counterclockwise unidirectional transmission property of circulator, downstream signal is aloft launched to mobile phone by retransmitting antenna.The upward signal of mobile phone enters circulator 2 after being received by retransmitting antenna, because the counterclockwise unidirectional transmission property of circulator 2, upward signal enters after the RX end filtering of duplexer 1 in the output of the ANT of duplexer end, then amplify by the transmit-receive sharing radio frequency link, upward signal outputs to circulator 1 at the RX of duplexer 2 end after entering the ANT end filtering of duplexer 2 then, because the clockwise unidirectional transmission property of circulator, upward signal are passed through donor antenna aloft to base station.Uplink and downlink signals flows in accompanying drawing 1 shown in the dotted line.
The present invention has saved the components and parts cost, has reduced the volume of equipment, has simplified production technology, has improved the efficient of equipment.
In addition to the implementation, all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of requirement of the present invention.
Claims (5)
1. the device of a transmit-receive sharing radio frequency link, it is characterized in that: the radio frequency link and the retransmitting antenna that comprise donor antenna, circulator 1, circulator 2, duplexer 1, duplexer 2, transmit-receive sharing, the donor antenna that is used to receive the downstream signal of base station and launch the upward signal of mobile phone is connected with circulator 1, begin radio frequency link, duplexer 2 again to circulator 1 by circulator 1, form one and receive and dispatch the loop through duplexer 1, transmit-receive sharing; The retransmitting antenna that is used to receive the downstream signal of the upward signal of mobile phone and transmitting base station is connected with circulator 2, begins radio frequency link, duplexer 2 through duplexer 1, transmit-receive sharing again to circulator 2 by circulator 2, forms another transmitting-receiving loop.
2. power amplifier digital bias system according to claim 1 is characterized in that: the radio frequency link of described transmit-receive sharing is used for the uplink and downlink signals of communication system is carried out processing and amplifying, is amplified to the coverage desired power.
3. power amplifier digital bias system according to claim 1 and 2 is characterized in that: at the repeater of not selecting band or frequency-selecting function, shared LNA of the radio frequency link of transmit-receive sharing and power amplifier; In the repeater with choosing band or frequency-selecting function, the radio frequency link of transmit-receive sharing is shared, and up choosing band adopts different radio frequency links with descending choosing band.
4. power amplifier digital bias system according to claim 1, it is characterized in that: described circulator 1 is used for separating of receiving and transmitting signal with circulator 2, the signal flow that antenna is received amplifies to the radio frequency link of transmit-receive sharing, and the radiofrequency signal after amplifying by radio frequency link simultaneously flows to another antenna and launches.
5. power amplifier digital bias system according to claim 1, it is characterized in that: described duplexer 1 and duplexer 2 are used for that the radiofrequency signal of the radio frequency link that enters transmit-receive sharing is carried out frequency and select, select the up-downgoing frequency range of communication system regulation, the various spurious emissions of filtering, and receiving and transmitting signal isolated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102603058A CN101938291A (en) | 2010-08-19 | 2010-08-19 | Device for transceiver radio frequency link |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102603058A CN101938291A (en) | 2010-08-19 | 2010-08-19 | Device for transceiver radio frequency link |
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| CN101938291A true CN101938291A (en) | 2011-01-05 |
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| CN2010102603058A Pending CN101938291A (en) | 2010-08-19 | 2010-08-19 | Device for transceiver radio frequency link |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103684646A (en) * | 2013-12-05 | 2014-03-26 | 上海华为技术有限公司 | Time division multiplexing system and channel sharing method |
| WO2015042983A1 (en) * | 2013-09-30 | 2015-04-02 | 华为技术有限公司 | Antenna and communication device |
| WO2015085533A1 (en) * | 2013-12-12 | 2015-06-18 | 华为技术有限公司 | Backhaul device and backhaul device control method |
| CN112615598A (en) * | 2020-12-16 | 2021-04-06 | 华中科技大学 | Low-insertion-loss frequency-adjustable broadband pulse NMR radio frequency duplexer |
| CN113014286A (en) * | 2021-02-09 | 2021-06-22 | 深圳市达驰通信有限公司 | Portable terminal signal amplifier |
Citations (4)
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| CN101013905A (en) * | 2006-10-23 | 2007-08-08 | 福建邮科通信技术有限公司 | TD-SCDMA amplifier with radio-frequency switch array and control method thereof |
| CN201294527Y (en) * | 2008-11-10 | 2009-08-19 | 徐兆东 | Common fibre-optical directly-discharging station for time division duplexing and frequency-division duplexing |
| CN201499383U (en) * | 2009-08-26 | 2010-06-02 | 深圳国人通信有限公司 | Network optimization equipment case of integrated high-selective multi-frequency reuse duplexer |
| CN201754581U (en) * | 2010-08-19 | 2011-03-02 | 三维通信股份有限公司 | Device for co-using the radio frequency chain circuit for transmitting and receiving |
-
2010
- 2010-08-19 CN CN2010102603058A patent/CN101938291A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101013905A (en) * | 2006-10-23 | 2007-08-08 | 福建邮科通信技术有限公司 | TD-SCDMA amplifier with radio-frequency switch array and control method thereof |
| CN201294527Y (en) * | 2008-11-10 | 2009-08-19 | 徐兆东 | Common fibre-optical directly-discharging station for time division duplexing and frequency-division duplexing |
| CN201499383U (en) * | 2009-08-26 | 2010-06-02 | 深圳国人通信有限公司 | Network optimization equipment case of integrated high-selective multi-frequency reuse duplexer |
| CN201754581U (en) * | 2010-08-19 | 2011-03-02 | 三维通信股份有限公司 | Device for co-using the radio frequency chain circuit for transmitting and receiving |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015042983A1 (en) * | 2013-09-30 | 2015-04-02 | 华为技术有限公司 | Antenna and communication device |
| US10044492B2 (en) | 2013-09-30 | 2018-08-07 | Huawei Technologies Co., Ltd. | Antenna and communications device |
| CN103684646A (en) * | 2013-12-05 | 2014-03-26 | 上海华为技术有限公司 | Time division multiplexing system and channel sharing method |
| CN103684646B (en) * | 2013-12-05 | 2016-08-31 | 上海华为技术有限公司 | A kind of time division multiplex system and the method for common-use tunnel |
| WO2015085533A1 (en) * | 2013-12-12 | 2015-06-18 | 华为技术有限公司 | Backhaul device and backhaul device control method |
| US10348390B2 (en) | 2013-12-12 | 2019-07-09 | Huawei Technologies Co., Ltd. | Backhaul device and backhaul device control method |
| CN112615598A (en) * | 2020-12-16 | 2021-04-06 | 华中科技大学 | Low-insertion-loss frequency-adjustable broadband pulse NMR radio frequency duplexer |
| CN113014286A (en) * | 2021-02-09 | 2021-06-22 | 深圳市达驰通信有限公司 | Portable terminal signal amplifier |
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Application publication date: 20110105 |