A plate structure residual ferrite phase shifter

Abstract

The present application discloses a flat-plate structure residual ferrite phase shifter, the main technical features of which are: It consists of a ferrite plate, a loading medium located in the center of the waveguide, and a yoke that is metallized on the inner surfaces of the upper and lower sides of the waveguide cavity parallel to the broad side of the waveguide. The application can effectively improve the maximum phase shift amount of the residual ferrite phase shifter, reduce the insertion loss, and reduce the longitudinal length of the phase shifter, and can solve the problem that the single-ring ferrite phase shifter is difficult to process and assemble with the medium loaded, and is compatible with the Compared with the double-ring ferrite phase shifter, the cost and complexity are effectively reduced.

Description

technical field [0001] The application belongs to the field of phase shifters, and relates to a remanent ferrite phase shifter. Background technique [0002] Phase shifters are key components in phased array antennas. Phase shifters are classified in terms of materials, including ferrite phase shifters, ferrodielectric phase shifters, semiconductor phase shifters, and MEMS phase shifters. For high-power applications, ferrite phase shifters are mostly used, which have the advantages of high reliability, low insertion loss and large power capacity. [0003] In the existing residual ferrite phase shifter, a ferrite magnetic ring is added to the waveguide, and an excitation line is inserted in the middle of the magnetic ring. The external drive circuit inputs current through the excitation line to provide a bias magnetic field, and controls the magnitude of the excitation current to make the ferrite work in different remanence states, thereby changing the propagation constant i...

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Problems solved by technology

However, due to the use of two ferrite rings, the number of corresponding driving circuits will also increase exponentially, increasing the cost and complexity of the system

[0005] In summary, in order to reduce system cost and complexity, a single-ring ferrite phase shifter should be used, but there are difficulties in processing and assembling single-ring phase shifters. In practical applications, the loading medium is often removed, which will cause shifting The maximum phase shift amount of the phaser decreases, the loss increases, and the longitudinal length becomes longer

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