China United Network Communications Group Company Limited

Huiming Ge

Xiaoming Huang

Wei Li

Jun Yan

Qiang Fu

Xudong Chen

Jianquan Wang

Junbin Mo

Anmin Deng

Biao He

Yuchen Shi

Guixin Pan

Qingyu Cai

Yanzhou Mai

Zhongfeng Peng

A method for combining with a minimum isolation bandwidth includes: determining an insertion loss and an isolation between ports of a combiner; calculating a total isolation bandwidth of an isolation band in the combiner according to the insertion loss and the isolation between ports; determining guard bandwidths adjacent to the isolation band in combined systems, the combined systems being at least two communication systems combined by the combiner; and, calculating an actual isolation bandwidth of the combiner according to the guard bandwidths of the combined systems and the total isolation bandwidth.

Method and device for setting an isolation bandwidth of a combiner

A ceiling-mount omni-directional antenna for indoor distribution system of mobile communication network and a method for manufacturing the same are provided. The antenna includes: a monopole consisting of a cone part and a columnar part, and a reflecting plate consisting of a cone part and a platform part, and a feed connector. The monopole and the reflecting plate are arranged in such that the tips of cone parts are opposite to each other. The signal is fed into the antenna through the feed connector and radiated outward by the monopole and the reflecting plate. In high frequency band, the maximal gain appears at about 70&#xb0;, so that the signal power focuses at radiating angles of 60&#xb0;-85&#xb0;. The gain of the antenna increases 4.22 dB at a radiating angle of 85&#xb0; and decreases IOdB at a radiating angle of 30&#xb0;.

Indoor ceiling-mount omnidirectional antenna and a method for manufacturing the same

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Beijing, China

Huiming Ge