Asymmetric malposition parallel-coupled magnetoelectricity-adjustable microwave filter with selectable functions and method

Abstract

The invention discloses an asymmetric malposition parallel-coupled magnetoelectricity-adjustable microwave filter with selectable functions and a method. The asymmetric malposition parallel-coupled magnetoelectricity-adjustable microwave filter comprises a piezoelectric phase, two ferromagnetic phase films, two GGG (gadolinium gallium garnet) substrates and two metal microstrip lines, wherein one GGG substrate is connected with the other GGG substrate by the piezoelectric phase; the ferromagnetic phase films grow on a part of the GGG substrates; the metal microstrip lines are printed on a part of the GGG substrates; the metal microstrip lines contact with the ferromagnetic phase films; the two GGG substrates are oppositely arranged in a parallel and staggered way; the two metal microstrip lines are respectively located on the two sides of the piezoelectric phase; the upper and lower surfaces of the piezoelectric phase 2 are respectively plated with metal films; the two metal microstrip lines are provided with four ports; one port in one side is an input port; two ports in the other side are output ports. The controllability and the miniaturization of a working frequency band are realized, a multi-port design is added in the asymmetric structure, the selectivity of the band-pass and the band elimination is introduced, and the versatility and the practicability of the filter are improved.

Description

technical field [0001] The invention relates to a miniaturized magnetoelectric tunable microwave filter with both band-resistance and band-pass performances, in particular to a magnetoelectric tunable microwave filter with asymmetric function optional dislocation parallel coupling and a method thereof. Background technique [0002] Utilizing the gyromagnetism of ferrite with low radiation loss, the ferromagnetic resonance frequency of ferrite can be adjusted in a large range by an external magnetic field, and microwave devices with adjustable magnetic field can be prepared. However, coils or permanent magnets are required to generate a magnetic field, which will result in large devices, slow speed, and low adjustment accuracy. The tunable microwave device is prepared from the magnetoelectric laminate material composed of piezoelectric material and low radiation loss ferrite, which not only retains the characteristics of ferrite device with large adjustment range under the ex...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to inherit the advantages of the tunable working frequency band of the magnetoelectric tunable microwave device, and at the same time overcome the defects of the single filtering performance of the existing magnetoelectric tunable microwave device, and provide an asymmetric function optional dislocation parallel coupling magnetoelectric tunable Microwave filter and method

Images