Implementation method of E-band circular waveguide attenuator

Abstract

The invention discloses an implementation method of an E-band circular waveguide attenuator, which comprises the following steps that: (1) enabling two mutually vertical dual-polarization signals to pass through a first circular waveguide tube and then be decomposed into an E-plane signal and an H-plane signal by a first polarization converter; (2) enabling the E-plane signal to pass through a first E-plane rectangular waveguide, a first rectangular attenuator and a second E-plane rectangular waveguide in sequence to realize an E-plane controllable E-plane attenuation signal; (3) enabling theH-plane signal to pass through a first H-plane rectangular waveguide, a second rectangular attenuator and a second H-plane rectangular waveguide in sequence to realize an H-plane controllable H-planeattenuation signal; and (4) combining the attenuated E-plane and H-plane attenuation signals together through a second polarization converter, and performing dual-polarization output through a secondcircular waveguide tube. The method has the beneficial effects that the dual-polarization signals are decomposed firstly, then attenuated respectively and finally combined. Due to the adoption of a new design scheme, the design process method is easy to implement and very high in producibility.

Description

Technical field [0001] The present invention relates to the technical field of microwave attenuators, and in particular to a method for implementing a circular waveguide attenuator in the E-band. Background technique [0002] As one of the indispensable devices in modern wireless communication systems, microwave waveguide signal transmission plays an important function in signal transmission. Among them, circular waveguides are widely used in various communication equipment due to their small loss, dual polarization and easy processing. In actual use, communication equipment needs to simulate the dual-polarized signal transmission of the antenna and the attenuation of the received signal. We can directly design a circular waveguide dual-polarized attenuation device to simulate this function. [0003] Conventional dual-polarized circular waveguides such as figure 1 As shown in the figure, an absorbing material 2 is added to the circular waveguide 1, and the absorbing materi...

AI Technical Summary

Problems solved by technology

The attenuator changes the relative rotation angle θ between the rotating absorber and the fixed absorber to achieve the purpose of controlling the attenuation value of the attenuator. The attenuation value is still controlled by absorbing materials, and there is also the tolerance after actual assembly that cannot be controlled. , the problem of not being able to accurately assemble the absorbing material

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