SW multiradio share antenna isolating coupling system

A technology of isolated coupling and shared antenna, applied in the directions of multi-terminal pair network, impedance network, electrical components, etc., can solve the problems of protection frequency bandwidth, insufficient use of antenna working frequency band, etc., to reduce antenna site, save time and labor for maintenance, The effect of improving the electromagnetic environment

Inactive Publication Date: 2002-09-25
COLLEGE OF INFORMATION ENG PLA
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

It can be seen that the guard frequency band of this coupler is relatively wide, so that the working frequency band of the antenna cannot be fully utilized

Method used

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  • SW multiradio share antenna isolating coupling system
  • SW multiradio share antenna isolating coupling system
  • SW multiradio share antenna isolating coupling system

Examples

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Embodiment Construction

[0014] Such as figure 1 As shown, the short-wave multi-machine shared antenna isolation coupling system is composed of a multi-channel isolation coupler, a three-mode matching feed network, and an antenna. The multi-channel isolation coupler and the three-mode matching feed network are connected through a high-frequency transmission line (coaxial cable) connect. Such as figure 2 As shown, the multi-channel isolation coupler is formed by cascading more than two signal isolation couplers, and the signal isolation coupler is composed of two identical broadband transmission line transformer magic Ts, two pairs of identical all-pass network phase balancers and Two identical filters are composed and connected sequentially according to the input-output relationship in the order of magic T, phase shifter, filter, phase shifter, and magic T. The two pairs of phase shifters are diagonal to the filter Symmetrical, the phase difference between the two phase shifters ΦA and ΦB of each p...

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Abstract

The short-wave machine-shared antenna isolation coupling system includes a three-mode matching feed network and an antenna, and it also includes a multi-channel isolation coupler. The multi-channel isolation coupler and the three-mode matching feed network are connected through a high-frequency transmission line. The multi-channel isolation coupler is formed by cascading more than two signal isolation couplers. The signal isolation coupler consists of two identical broadband transmission line transformer magic Ts, two pairs of identical all-pass network phase shifters and two complete The same filter composition. The invention improves the utilization rate of the antenna, greatly reduces the occupied area of ​​the antenna, and makes full use of the working frequency band of the antenna. #!

Description

technical field [0001] The invention relates to an isolation and coupling system for a short-wave transmitting system, in particular to an isolation and coupling system for a multi-machine shared antenna used in a point-to-multipoint communication system. technical background [0002] The existing transmitter sharing system at home and abroad is a three-transmitter sharing system composed of a three-mode matching feed network and an antenna. Because only one antenna can be shared by three transmitters, the antenna utilization rate is not high. In order to realize more than three-way communication, such a system can only be added, which will undoubtedly greatly increase the footprint of the antenna. In addition, multi-channel signals need to be isolated and coupled, and the current multi-channel isolation couplers are mostly based on the principle of short-cut transmission lines and trap circuit principles. Because these two isolation couplers are difficult to tune when the o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03H7/00
Inventor 高凤玉张广求罗小武白贵芳李善文
Owner COLLEGE OF INFORMATION ENG PLA
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