A multi-channel input microwave gain control module

Abstract

The invention relates to a multi-channel input microwave gain control module, which is characterized in that it includes: a limiter protection circuit for limiting the amplitude of the input high-power signal; a switch selection circuit for signal selection of the target channel; and amplifying the signal entering the module , a straight-through or attenuation gain control circuit; a module control circuit for controlling the switch selection circuit and the gain control circuit. The invention overcomes the shortcomings of traditional microwave gain control modules such as single function, large volume, poor stability, and low index, meets the requirements of modern wireless communication system modules with high performance, high reliability, and miniaturized volume, and has the advantages of small processing difficulty and low cost , light weight and many integrated functions, and can also be composed of microwave receiving modules of various scales and functions by flexibly selecting different branches and switching branches in different states, which can meet the application requirements of various receiving systems.

Description

technical field [0001] The invention relates to the technical field of microwave control circuits, in particular to a multi-channel input microwave gain control module. Background technique [0002] The gain control module is a commonly used module in the wireless receiving system, which plays the role of adjusting the amplitude of the received signal; with the rapid development of modern wireless communication systems and electronic equipment, research on gain control circuits with broadband, large dynamics and flexible control methods It has become one of the keys of the circuit system. [0003] The traditional microwave gain control module is usually composed of a single switch, amplifier, attenuator and other modules spliced ​​through cables, which has the disadvantages of single function, large size, poor stability and low index; with the increasing requirements of modern wireless communication systems The requirements for the microwave gain control module are constant...

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Problems solved by technology

[0003] The traditional microwave gain control module is usually composed of a single switch, amplifier, attenuator and other modules spliced ​​through cables, which has the disadvantages of single function, large size, poor stability and low index; with the increasing requirements of modern wireless communication systems The requirements for the microwave gain control module are constantly increasing. At the same time, with the continuous increase of the frequency of the wireless communication system, the traditional microwave gain control module can no longer meet the system index requirements.

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