A dual-band high-temperature superconducting filter

Abstract

A high double-pass band temperature superconducting filter, including a microstrip resonator array, an input microstrip, and an output microstrip, is characterized in that by introducing cross-coupling between non-adjacent resonators in the microstrip resonator array, Realize the filtering characteristics of double passband; the advantage of the present invention is that it can meet the filtering requirements of the system for two non-adjacent frequency band signals, and has the characteristics of small size, compact structure, flexible design, etc.; it is suitable for high temperature super Conductive film production.

Description

(1) Technical field: [0001] The invention relates to a filter, in particular to a double-passband high-temperature superconducting filter. The double-passband filter can be made of a high-temperature superconducting film. (two) background technology: [0002] With the rapid development of the communication industry, various communication standards exist at the same time, and the frequency resources are becoming more and more tight, so that the frequency band used by each communication standard is often divided into several non-adjacent parts. Therefore, in an actual communication system, what the system needs to receive are often non-adjacent signals of two different frequencies. In response to this situation, engineers began to study filters with dual-passband frequency characteristics. At present, the most researched technical solution is to use parallel connection of filters, that is, to design two filters with different passband frequencies. The T-shaped joints are conn...

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Problems solved by technology

In response to this situation, engineers began to study filters with dual-passband frequency characteristics. At present, the most researched technical solution is to use parallel connection of filters, that is, to design two filters with different passband frequencies. The T-shaped joints are connected together to realize the characteristics of a double-pass band filter with one input and one output. The disadvantage is that this technical solution is actually two filters, and two T-shaped joints are added at the same time. The structure is complex and matching and debugging are difficult. And the volume is large, which is not conducive to the miniaturization and integration of the system

There is also a technical solution, which is to integrate the band-pass filter and the band-stop filter together to realize the characteristics of dual-pass bands. The disadvantages are also large volume and complex structure.

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