CN1194571C - Base station receiver and transmitter radio frequency front end - Google Patents
Base station receiver and transmitter radio frequency front end Download PDFInfo
- Publication number
- CN1194571C CN1194571C CNB011269243A CN01126924A CN1194571C CN 1194571 C CN1194571 C CN 1194571C CN B011269243 A CNB011269243 A CN B011269243A CN 01126924 A CN01126924 A CN 01126924A CN 1194571 C CN1194571 C CN 1194571C
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- unit
- base station
- diversity reception
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- low noise
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Abstract
The present invention discloses a base station receiver and transmitter radio frequency front end which comprises a transmission unit, a main receiving unit, a diversity reception unit and a monitoring unit. The radio frequency front end integrates the transmission unit, the main receiving unit, the diversity reception unit and the monitoring unit in a module to make the front end of a base station system keep functions of the original transmission unit, the main reception unit, the diversity reception unit and the monitoring unit and also make the structure of the radio-frequency front end of the base station receiver and transmitter compact. The radio-frequency front end can be integrated in a machine frame of the base station system, a transmission combiner is connected with a transmission /reception duplexer through an external coaxial cable to realize that the transmission is connected with the duplexer directly under the condition that the transmission is not in a combined channel, and a single transmitter has less transmission loss.
Description
Technical field
The present invention relates to mobile communcations system, more specifically refer to a kind of base station receiver and transmitter radio frequency front end.
Background technology
In wireless telecommunication system, the front end of transceiver system synthesizes one the tunnel in order to improve the utilance of outdoor antenna feeder installation wire system to the normal multichannel that adopts that transmits, and promptly launches path combining technique, increases monitoring circuit simultaneously for transmission channel is monitored; Often need low noise to amplify (LNA) for received signal, adopt the technology of one road demultiplexing simultaneously for the signal after amplifying, promptly receive bypass technology, and increase monitoring circuit for transmission channel is monitored; Sometimes to use the limitation of different antennas with received signal in order solving to transmit, to adopt to transmit and received signal synthetic technology, i.e. duplex technology; And some occasions are arranged, in order to strengthen reception, adopting the reception antenna transmission system of two secondary no correlations is diversity receiving technology for receiving system.
Please in conjunction with Fig. 1-Fig. 4,
It is that the emitting radio frequency signal of several senders is synthesized one the tunnel through mixer that the road is closed in emission, is gone out by a secondary transmission antennas transmit through behind the emission filter again.
Reception is to give receiver through receiving filter and low noise amplifier after splitter is divided into several roads with the radiofrequency signal that a secondary reception antenna receives along separate routes.
Duplex is by a duplexer sender radiofrequency signal to be delivered to common antenna, and the radiofrequency signal of utilizing this antenna to receive is simultaneously given receiver by this duplexer.
Diversity reception is that the antenna (reception antenna 1 and reception antenna 2) by two secondary no correlations receives radiofrequency signal, delivers to independently main receiver and diversity receiver after passing through filter and LNA respectively, is being handled by the diversity reception signal processing module.
In base-station transceiver system, emission is closed the road, is received along separate routes, duplex, diversity reception all are to be designed to independent module separately to be used for different occasions and different system, the monitoring circuit that transmits and receives passage also is to be scattered in the corresponding separate modular, and a module has only a kind of function.A common base-station transceiver system need comprise multichannel transmit synthetic, received signal is amplified and demultiplexing, diversity reception function etc., transmit and received signal adopt same antenna, to the work of each several part be monitored simultaneously, if adopt present separate modular, will there be following shortcoming in base-station transceiver system:
1, system needs a lot of modules, is distributed on a plurality of grooves position of rack;
2, the operating state monitoring circuit of each functional module is distributed in each independent functional module, relatively disperses, is not easy to concentrate monitor management;
3, need the machine frame of each functional module of installation a lot, use inconvenience.
Obviously, this makes every effort to the design of mobile communication system base station that installed module is few, function does not conform to the requirement of compact conformation by force.
Summary of the invention
The problems referred to above at base station receiver and transmitter radio frequency front end exists the invention provides a kind of base station receiver and transmitter radio frequency front end.
In order to address the above problem, the present invention adopts following technical scheme, this base station receiver and transmitter radio frequency front end comprises transmitter unit, main receiving element, diversity reception unit, monitor unit, it is characterized in that: transmitter unit, main receiving element, diversity reception unit, monitor unit are integrated among the module
Described transmitter unit contains emission mixer, emission receiving duplexer, in transmitter unit, the input of emission mixer and the sender of base station system join, and the output of emission mixer is connected to the emission receiving duplexer, and the main antenna of duplexer and base station system joins;
Described main receiving element contains low noise amplifier and main received branch unit, in main receiving element, the input of low noise amplifier and the duplexer of transmitter unit join, the output of low noise amplifier and main received branch unit join, and the output of main received branch unit is connected to the main receiver of base station system;
Described diversity reception unit contains receiving filter, low noise amplifier, diversity reception splitter, in the diversity reception unit, receiving filter and diversity antenna join, the input that the output of receiving filter connects low noise amplifier is joined, the input that the output of low noise amplifier connects the diversity reception splitter is joined, and the output of diversity reception splitter is connected to the diversity receiver of base station system;
Described monitor unit comprises that a transmission channel master receives a monitoring circuit and a diversity reception path monitoring circuit, the transmission channel master receives monitoring circuit and is connected with the duplexer of transmitter unit and the low noise amplifier of main receiving element, and diversity reception path monitoring circuit is connected with the low noise amplifier of diversity reception unit.
In the described transmitter unit, the output of emission mixer is joined by an external coaxial cable and the input of emission receiving duplexer.
Because the present invention is with the transmitter unit in traditional base station receiver and transmitter radio frequency front end, main receiving element, the diversity reception unit, monitor unit is integrated among the module, make the front end of base station system not only keep original transmitter unit, main receiving element, the diversity reception unit, monitor unit has outside the function, also make the base station receiver and transmitter radio frequency front end structure more compact, make it to be integrated in the machine frame of base station system, and the emission mixer joins by an external coaxial cable with the emission receiving duplexer, can be implemented in emission does not conform under the situation on road, emission is directly connected to duplexer, and launch loss is very little when making single sender.
Description of drawings
Fig. 1-Fig. 4 is respectively existing independently emission and closes the road, receives the base station receiver and transmitter radio frequency front end block diagram that shunt, duplex and diversity reception are formed.
The base station receiver and transmitter radio frequency front end block diagram of Fig. 5 for adopting radio-frequency front-end of the present invention to constitute.
The base station receiver and transmitter radio frequency front end one embodiment block diagram of Fig. 6 for adopting radio-frequency front-end of the present invention to constitute.
Embodiment
See also shown in Figure 5ly, base station receiver and transmitter radio frequency front end 10 of the present invention comprises transmitter unit 11, main receiving element 12, diversity reception unit 13, monitor unit 14.Transmitter unit 11, main receiving element 12, diversity reception unit 13, monitor unit 14 are integrated among the module.
Described transmitter unit 11 contains emission mixer, emission receiving duplexer, in transmitter unit 11, the input of emission mixer and the sender of base station system join, and the output of emission mixer is connected to the emission receiving duplexer, and the main antenna Y1 of duplexer and base station system joins.
Described main receiving element 12 contains low noise amplifier and main received branch unit, in main receiving element 12, the input of low noise amplifier and the duplexer of transmitter unit join, the output of low noise amplifier and main received branch unit join, and the output of main received branch unit is connected to the main receiver of base station system.
Described diversity reception unit 13 contains receiving filter, low noise amplifier, diversity reception splitter, in diversity reception unit 13, receiving filter and diversity antenna Y2 join, the input that the output of receiving filter connects low noise amplifier is joined, the input that the output of low noise amplifier connects the diversity reception splitter is joined, and the output of diversity reception splitter is connected to the diversity receiver of base station system.
Described monitor unit 14 joins by the data cable line is two-way with transmitter unit 11, main receiving element 12, diversity reception unit 13 respectively.
In the described transmitter unit 11, the output of emission mixer is joined by an external coaxial cable 15 and the input of emission receiving duplexer.
Please continue to consult shown in Figure 6, the present invention again with emission in the base station radio-frequency front end of gsm system close the road be two-in-one, receive that to be that one-to-two is that example further specifies along separate routes as follows:
In this embodiment, adopted two tunnel unification roads at the emission mixer of transmitter unit 11, No. two senders of the input of mixer and base station system join, and the road output of closing of emission mixer is connected to the emission receiving duplexer.Mixer is selected the two-in-one mixer of three decibels bridge type for use, and duplexer adopts the duplexer of coaxial cavity formula.
In main receiving element 12, the duplexer of the input of low noise amplifier and transmitter unit 11 joins, and the output of low noise amplifier and main received branch unit join, and two tunnel outputs of main received branch unit are connected to two tunnel master's receivers of base station system.
In diversity reception unit 13, receiving filter and diversity antenna Y2 join, the input that the output of receiving filter connects low noise amplifier is joined, the input that the output of low noise amplifier connects the diversity reception splitter is joined, and two tunnel outputs of diversity reception splitter are connected to the diversity receiver of base station system.Splitter adopts the one-to-two splitter of two microstrip-type.Receiving filter is selected the receiving filter of coaxial cavity formula for use.
This embodiment launches the high-power RF signal of two senders through coaxial transit cable 15 after by two-in-one synthesizer again through coaxial duplexer, the double simultaneously reception antenna Y1 that is of the antenna that transmits is arranged, received RF signal is passed through low noise amplifier after by duplexer again, give two main receivers with the one-to-two splitter of microstrip-type again; Reception antenna Y2 after process is amplified back, one-to-two equally through receiving filter with another road received signal, gives two diversity receivers as diversity reception usefulness.The two paths of signals of main receiver and the output of diversity receiver is realized the gain of diversity reception through the diversity reception signal processing.
Claims (2)
1, a kind of base station receiver and transmitter radio frequency front end comprises transmitter unit, main receiving element, diversity reception unit, monitor unit, it is characterized in that: transmitter unit, main receiving element, diversity reception unit, monitor unit are integrated among the module,
Described transmitter unit contains emission mixer, emission receiving duplexer, in transmitter unit, the input of emission mixer and the sender of base station system join, and the output of emission mixer is connected to the emission receiving duplexer, and the main antenna of duplexer and base station system joins;
Described main receiving element contains low noise amplifier and main received branch unit, in main receiving element, the input of low noise amplifier and the duplexer of transmitter unit join, the output of low noise amplifier and main received branch unit join, and the output of main received branch unit is connected to the main receiver of base station system;
Described diversity reception unit contains receiving filter, low noise amplifier, diversity reception splitter, in the diversity reception unit, receiving filter and diversity antenna join, the input that the output of receiving filter connects low noise amplifier is joined, the input that the output of low noise amplifier connects the diversity reception splitter is joined, and the output of diversity reception splitter is connected to the diversity receiver of base station system;
Described monitor unit comprises that a transmission channel master receives a monitoring circuit and a diversity reception path monitoring circuit, the transmission channel master receives monitoring circuit and is connected with the duplexer of transmitter unit and the low noise amplifier of main receiving element, and diversity reception path monitoring circuit is connected with the low noise amplifier of diversity reception unit.
2, base station receiver and transmitter radio frequency front end as claimed in claim 1 is characterized in that: in the described transmitter unit, the output of emission mixer is joined by an external coaxial cable and the input of emission receiving duplexer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011269243A CN1194571C (en) | 2001-09-29 | 2001-09-29 | Base station receiver and transmitter radio frequency front end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011269243A CN1194571C (en) | 2001-09-29 | 2001-09-29 | Base station receiver and transmitter radio frequency front end |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1411299A CN1411299A (en) | 2003-04-16 |
| CN1194571C true CN1194571C (en) | 2005-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011269243A Expired - Lifetime CN1194571C (en) | 2001-09-29 | 2001-09-29 | Base station receiver and transmitter radio frequency front end |
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| Country | Link |
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| CN (1) | CN1194571C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101147334B (en) * | 2005-03-30 | 2012-07-18 | 富士通株式会社 | Wireless communication system and wireless communication method |
| CN100450247C (en) * | 2005-04-07 | 2009-01-07 | 中兴通讯股份有限公司 | RF front end module online monitoring apparatus and method in CDMA base station |
| CN100388825C (en) * | 2005-10-24 | 2008-05-14 | 华为技术有限公司 | Signal loop device and base-station common antenna-feedback system using same |
| CN101034922B (en) * | 2007-04-19 | 2010-07-07 | 华为技术有限公司 | Signal mixing method, device and same-frequency band and common antenna feedback system for different systems |
| CN102271426B (en) * | 2007-04-30 | 2014-04-30 | 华为技术有限公司 | Radio frequency (RF) processing device and method for configuring same |
| US8995401B2 (en) | 2010-05-14 | 2015-03-31 | Alcatel Lucent | Multiple antenna method and apparatus for reducing inter-cell interference in multi-user wireless systems |
| CN106685438A (en) * | 2017-01-10 | 2017-05-17 | 广东欧珀移动通信有限公司 | Radio frequency circuit and terminal |
| CN110808722A (en) * | 2019-10-08 | 2020-02-18 | 珠海众通乐行网络科技有限公司 | Circuit for improving LTE diversity sensitivity |
-
2001
- 2001-09-29 CN CNB011269243A patent/CN1194571C/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1411299A (en) | 2003-04-16 |
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Granted publication date: 20050323 |