Signal loop device and base-station common antenna-feedback system using same

A technology of combining devices and signals, applied in diversity/multi-antenna systems, selection devices, circuits, etc., can solve the problems of large insertion loss of transmitted signals, poor versatility, and large insertion loss of transmitted signals.

Active Publication Date: 2006-10-25
HUAWEI TECH CO LTD
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Problems solved by technology

It can be seen from this that: First, although the insertion loss of the narrowband filter for the transmitted signal is low, the scheme needs to separate the transmitted signal from the transmitted and received signals of the two base stations, and then combine them with the received signal. Therefore, the structure Complicated; second, counting the insertion loss of the additional signal separation and combination link, the total insertion loss of the narrowband filter combination scheme for the transmitted signal is about 1.5dB; third, for different frequency points of the trans

Method used

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  • Signal loop device and base-station common antenna-feedback system using same
  • Signal loop device and base-station common antenna-feedback system using same
  • Signal loop device and base-station common antenna-feedback system using same

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Embodiment Construction

[0036] The signal combination device provided by the present invention is actually two duplexers sharing the same transmit filter, which reduces the insertion loss of the transmit signal due to the sharing of the same transmit filter; The device of the invention can realize the common antenna feed system of two base stations without additional signal separation and combining devices; moreover, the device of the invention has versatility for specified frequency band types and does not need to be configured separately for each base station. Therefore, using the signal combination device provided by the present invention to realize the base station common antenna feed system of CDMA 2000 1X service and EV-DO service has the advantages of little impact on the performance of the original 1X base station, simple structure, low cost and good versatility.

[0037] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention wil...

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Abstract

The equipment includes parts: emission filter, its input connected to cabinet interface of the equipment, and its output connected to antenna interface; reception filter at antenna end together with emission filter constitute duplexer at antenna end, its input connected to antenna interface, and its output connected to power divider; reception filter at cabinet end together with emission filter constitute duplexer at cabinet end, its input connected to interface for receiving input, and its output connected to the cabinet interface; power divider divides output signal of reception filter at antenna end into two routes of carrying same signal, its input connected to the reception filter at antenna end, and its two outputs connected to output interface of diversity reception, and of main reception. The invention also discloses common antenna feeder lines of base station. Features are: small influence on performance of original base station, reliable and low coat, and good generality.

Description

technical field [0001] The invention relates to the base station technology in the field of mobile communication, in particular to a signal combining device and a base station common-antenna feeder system realized by the signal combining device. Background technique [0002] Different mobile communication systems or different services of the same mobile communication system need to use different base stations. For example, the new CDMA 2000 data service EV-DO that is being promoted needs to use different base stations from the mature CDMA 2000 voice service 1X. Here, the base station includes an indoor cabinet and an outdoor antenna feeder. Generally speaking, outdoor antenna feeders need to be installed at high places, usually on iron towers and building roofs. However, now that various mobile communication standards coexist, outdoor antenna feeders of different systems of different mobile communication operators, such as GSM, CDMA 2000, WCDMA, etc., have long been covered...

Claims

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Application Information

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IPC IPC(8): H04Q7/30H04B7/08H01P1/32H04W88/08
Inventor 艾鸣田涛
Owner HUAWEI TECH CO LTD
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