A continuously adjustable superconducting filter system with multiple working modes controlled by host computer

Abstract

The invention discloses a continuously adjustable superconductive filter system using an upper computer to control multiple working modes and belongs to the field of microwave communication technical equipment. The continuously adjustable superconductive filter system comprises an adjustable superconductive filter, a frequency control circuit, a low-temperature vacuum dewar flask, a refrigerating machine, a temperature control circuit of the refrigerating machine, and the upper computer. The frequency control circuit is formed by a programmable single chip microcomputer and a DA module. The adjustable superconductive filter is arranged in the low-temperature vacuum dewar flask. The refrigerating machine is connected with the low-temperature vacuum dewar flask. The adjustable superconductive filter is connected with the frequency control circuit. The upper computer is communicated with the frequency control circuit through a serial port. The adjustable superconductive filter is a continuously adjustable high-temperature superconductive filter. The continuously adjustable superconductive filter system has the advantages of being modularized, capable of being easily in cascade connection with other devices, stable in working state and the like, continuous and real-time adjustability of center frequency is achieved, the working modes can be expanded and changed according to user demands, and the diversity and flexibility of the working modes of the system are enhanced.

Description

technical field [0001] The invention belongs to the technical field of microwave communication equipment, in particular to a continuously adjustable superconducting filter system controlled by a host computer with multiple working modes. Background technique [0002] RF receive front-end subsystems play a vital role in various military and civilian communication systems. Its technical indicators and characteristics are the key to the performance of the entire communication system. Among them, if the center frequency of the filter is adjustable, the in-band anti-interference ability and the flexibility of the working mode of the entire communication system will be greatly improved. In the case of changes in the operating frequency of the communication system, signal filtering and amplification can still be achieved. For modern The communication system is very important. With the increasingly tight spectrum resources, the demand for technologies such as frequency hopping and ...

AI Technical Summary

Problems solved by technology

[0005] 1. The loss of conventional materials is large, and the sensitivity and anti-interference ability of the tunable filter system made of them are significantly reduced

[0006] 2. The control mode is single, generally only contains one working mode, and the flexibility of mode switching is not high

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