Dual polarization filter for microwave communication system ODU (Outdoor Unit)

Abstract

The invention relates to a dual polarization filter for a microwave communication system ODU (Outdoor Unit). Compared with the prior art, the dual polarization filter has the advantage that the defect that the dual polarization filter for the ODU is unavailable in the prior art is solved. The tail end of a groove is connected with a step waveguide group; the step waveguide group is connected with a waveguide segment A; the waveguide segment A is connected with a multi-column cascade waveguide group A; the multi-column cascade waveguide group A is connected with a waveguide port A; a coupling window is arranged at the junction of the groove and the step waveguide group, and stretches across the tail end of the groove and the first step of the step waveguide group; the axis of the coupling window is vertically orthogonal to the axis of the groove; the coupling window is connected with a waveguide segment B; the waveguide segment B is connected with a multi-column cascade waveguide group B; the multi-column cascade waveguide group B is connected with a waveguide port B. By adopting the dual polarization filter, dual polarization processing of the filter is realized.

Description

technical field [0001] The invention relates to the technical field of microwave communication systems, in particular to a dual-polarization filter used for ODUs of microwave communication systems. Background technique [0002] Microwave communication is one of the most commonly used wireless communication methods in the world. It effectively replaces traditional wired communication and is widely used in data transmission, radio and television transmission, satellite communication, mobile communication, security and other fields. With the rapid development of wireless communication, it is further required to increase the capacity of the communication system. At present, the polarization diversity technology is generally used to improve the working efficiency of the antenna. In the existing microwave communication system, an outdoor dual-polarized antenna and two ODUs are connected by using an orthogonal mode converter, that is, the two integrated channels of transmitting a...

AI Technical Summary

Problems solved by technology

It is precisely because two filters or duplexer units are required to form two ODUs with a dual-polarized antenna, so it is impossible to integrate two ODUs into one dual-polarized ODU

This method has problems such as complex structure, large size, high cost, and difficult installation. How to develop a dual-polarization filter is crucial to the development of dual-polarization ODUs.

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