Nonreciprocal ferrite phase shifter based on artificial surface plasmon transmission line

Abstract

The invention belongs to the technical field of communication, and in particular relates to a non-reciprocal ferrite phase shifter. A non-reciprocal ferrite phase shifter based on an artificial surface plasmon transmission line, comprising: a dielectric substrate, an upper metal copper clad layer, a lower metal copper clad layer and a ferrite block; wherein the upper metal copper clad layer is clad On the upper surface of the dielectric substrate, the lower metal copper-clad layer covers the lower surface of the dielectric substrate; the ferrite block is placed on the upper metal copper-clad layer, and the center of the ferrite block coincides with the center of the dielectric substrate. The non-reciprocal ferrite phase shifter of the present invention has the advantages of miniaturization, easy integration with traditional microstrip circuits, and adjustable phase shift, and realizes non-reciprocal ferrite phase shifters with different phase shifts when microwave signals are input forward and backward. Easy to phase shift.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a non-reciprocal ferrite phase shifter. Background technique [0002] The ferrite phase shifter is a microwave communication device, which can provide variable phase shift by changing the bias magnetic field of the ferrite. Ferrite phase shifters are widely used in phased array radars because of their large phase shift and low insertion loss. However, with the trend of miniaturization and integration of microwave components, the volume of ferrite phase shifters has become a key issue restricting its development. [0003] Non-reciprocity is a term in microwave technology, which refers to the fact that electromagnetic waves traveling in two opposite directions in an object will exhibit different characteristics such as electromagnetic loss and phase shift. This phenomenon is called non-reciprocity. The non-reciprocal phase shifter is a microwave functional devic...

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Problems solved by technology

[0005] In order to make up for the deficiencies and defects of existing ferrite phase shifters, the present invention provides a non-reciprocal ferrite phase shifter based on artificial surface plasmon transmission lines, which has low loss and high signal constraints. Advantages, and realize the non-reciprocal phase shift with different phase shift amounts when the microwave signal is input forward and backward, and solve the problem of large size and difficult integration of ferrite phase shifter

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