China United Network Communications Group Company Limited

China United Networks Communications Group Company Limited

Junbin Mo

Xiaoming Huang

Wei Li

Jun Yan

Qiang Fu

Jianquan Wang

Anmin Deng

Huiming Ge

Guixin Pan

Yuchen Shi

Qingyu Cai

Xinliang Liu

Biao He

Xinming Chen

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

The present invention provides an omni-directional ceiling antenna, including: a cone cylinder-shaped radiation oscillator, a cone cylinder-shaped reflector, a disc cylinder-shaped base plate, and a dielectric ring; where the reflector includes a first hollow cone and a first cylindrical ring, a flared end of the first hollow cone is connected to the first cylindrical ring, and an outer diameter of the first cylindrical ring is smaller than that of the flared end of the first hollow cone; a second cylindrical ring is provided on the base plate, and the second cylindrical ring sockets to the first cylindrical ring to form a spatially separated coupling structure; the dielectric ring is provided between the second cylindrical ring and the first cylindrical ring so as to realize separation and fixed support between the reflector and the base plate.

Omni-directional ceiling antenna

Growing community of inventors

Beijing, China

Junbin Mo