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Signal interference suppression device

A suppression device and signal interference technology, applied in the field of communication, can solve problems such as bridge connection interference and inability to suppress interference, and achieve the effects of avoiding interference, reasonable signal transmission and reception isolation, and preventing blocking interference

Inactive Publication Date: 2012-07-04
CHINA MOBILE GRP GUANGDONG CO LTD +1
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Problems solved by technology

[0008] Aiming at the problem that there is interference in the bridge connection between the base station and the antenna feeder system in the related art, and the interference cannot be suppressed, the present invention proposes a signal interference suppression device, which can effectively suppress the interference between the transceiver ports and the outbanding of the downlink signal Spurious interference to uplink signal, external interference and intermodulation interference

Method used

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Embodiment Construction

[0021] Aiming at the problem that there is interference in the connection between the base station and the antenna feeder system in the related art and the interference cannot be suppressed, the present invention proposes to separate and transmit the transmitted signal (downlink signal) and the received signal (uplink signal) by means of a duplexer and a combiner , and achieve filtering and attenuation through attenuators and circulators, thereby suppressing interference between transceiver ports and between uplink signals and downlink signals, and at the same time avoiding interference between different base stations.

[0022] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, the direction from the base station to the antenna feeder system is the downlink direction (forward direction), and the direction from the antenna feeder system to the base station is the uplink direction (reve...

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Abstract

The invention discloses a signal interference suppression device, which comprises a first duplexer, a second duplexer, a third duplexer, a fourth duplexer, a first combiner, a second combiner, a first circulator, a second circulator, a first attenuator and a second attenuator, wherein a TX / RX port of the first duplexer is connected with a first port of a base station; a TX port of the first duplexer is connected to the first combiner through the first circulator, and an RX port of the first duplexer is connected to the second combiner through the first attenuator; a TX / RX port of the second duplexer is connected with a second port of the base station, a TX port of the second duplexer is connected to the first combiner through the second circulator, and an RX port of the second duplexer is connected to the second combiner through the second attenuator; the first combiner is connected with a TX port of the third duplexer and a TX port of the fourth duplexer; the second combiner is connected with an RX port of the third duplexer and an RX port of the fourth duplexer; a TX / RX port of the third duplexer is connected with a first port of an antenna feed system; and a TX / RX port of the fourth duplexer is connected with a second port of the antenna feed system.

Description

technical field [0001] The invention relates to the communication field, in particular to a signal interference suppression device. Background technique [0002] At present, in the indoor distribution system, the source carrier signals of the base stations (also called base transceiver stations, Base Transceiver Station, BTS for short) of the same system are mostly combined by electric bridges and then covered. [0003] figure 1 It is a schematic diagram of the connection between the base station and the antenna feeder system through the bridge 18. exist figure 1 In the structure shown, the bridge 18 needs to combine the downlink signals from the base station and provide them to the antenna feeder system in a 4-way manner, and the bridge also needs to split the uplink signals from the antenna feeder system to provide to the base station. [0004] but, figure 1 The structure shown in has the following drawbacks: [0005] (1) Since the isolation of the input port of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B15/00
Inventor 蔡汉才黄志伟黄沛江尹小华韩永佳林玉辉黄景民夏功想
Owner CHINA MOBILE GRP GUANGDONG CO LTD
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