Microwave program-control step attenuator

A program-controlled stepping and microwave attenuation technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve the problems of long switching time, low attenuation accuracy, and low reliability of broadband microwave program-controlled stepping attenuators. The effect of fast speed, good attenuation accuracy and high fast switching ability

Inactive Publication Date: 2013-10-23
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a microwave program-controlled step attenuator, which aims to solve the problems of low reliability, long switching time and low attenuation accuracy of the broadband microwave program-controlled step attenuator

Method used

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  • Microwave program-control step attenuator

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] Such as figure 1 As shown, a microwave program-controlled step attenuator includes a microwave signal input end 104, a microwave signal output end 105, a microwave transmission path 103, a path switching unit 102, and a microwave attenuation unit 101; the microwave signal input end 104 passes through the The microwave transmission path 103 is connected to the path switching unit 102; the path switching unit 102 is connected to the microwave attenuation unit 101 through the microwave transmission path 103; the microwave attenuation unit 101 is connected to the microwave transmission path 103 ...

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Abstract

The invention is applicable to the technical field of microwave attenuators and provides a microwave program-control step attenuator, which comprises a microwave signal input end, a microwave signal output end, microwave transmission channels, channel switching units and microwave attenuation units. The microwave signal input end is connected with the channel switching units through the microwave transmission channels. The channel switching units are connected with the microwave attenuation units through the microwave transmission channels. The microwave attenuation units are connected with the microwave signal output end through the microwave transmission channels. The microwave program-control step attenuator provided by the invention is different from an optical attenuator, uses MEMS (Micro Electro Mechanical System) switches as the channel switching units of a microwave transmission line and enables microwaves to be switched between straight-through transmission lines and broadband attenuating sheets, so that the goals of attenuation amount program control and step attenuation are realized. By using distributed resistive attenuating sheets as the microwave attenuation units, the microwave attenuation units are enabled to have very high attenuation accuracy within a wider frequency range.

Description

technical field [0001] The invention belongs to the technical field of microwave attenuators, in particular to a microwave program-controlled step attenuator. Background technique [0002] The microwave program-controlled step attenuator is a common component and the core component in the microwave testing instrument. Its index and reliability have a direct impact on the performance of the microwave testing instrument. It is widely used in wideband synthetic signal sources, wideband spectrum analyzers, wideband measurement receivers, and wideband vector network analyzers. [0003] At present, microwave program-controlled step attenuators commonly used in industry are mainly electromechanical program-controlled step attenuators and electronically controlled step attenuators. Both types of attenuators have their pros and cons. [0004] The electromechanical program-controlled step attenuator uses an electromagnetic relay to drive the moving reed for microwave transmission, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/22
Inventor 年夫顺文春华姜万顺
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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