A wide-tuning coaxial electric tuning filter and its debugging method

An electronically tuned filter and wide-tuning technology, which is applied to waveguide devices, circuits, electrical components, etc., can solve problems such as difficulty in achieving a constant bandwidth amplitude-frequency response, difficulty in response curves, and lack of flexibility in design, processing, and debugging. , to achieve the effect of improving design and debugging efficiency, simple debugging method, and easy debugging
CN104393383BActive Publication Date: 2017-09-29NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Publication Date
2017-09-29

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Abstract

The invention discloses a wide-tuning coaxial electric tuning filter and a debugging method thereof, and relates to the technical field of microwave communication. The electronically adjustable filter includes a drive circuit, a stepping motor, a transmission mechanism and a filter. The filter has two coupling seats, multiple resonant cavities, and multiple inter-cavity coupling structures. The coupling seat is fixedly equipped with a trapezoidal coupling ring An adjustable frequency compensation device is arranged on the outer conductor of the resonant cavity, and the inter-cavity coupling structure is a metal plate with two or more round holes or polygonal holes. The debugging method provided by the invention can make the electric tuning filter reach a tuning range above an octave and have constant bandwidth, stable amplitude-frequency and echo characteristics, improve product debugging efficiency, and reduce manufacturing and debugging costs.
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Description

technical field

[0001] The invention relates to a coaxial electric tuning filter and a debugging method thereof, in particular to a wide-tuning coaxial electric tuning filter and a debugging method thereof, belonging to the technical field of microwave filters in the communication field. Background technique

[0002] In the prior art, the Chinese Utility Model Patent No. CN201220549062.4 discloses "a UHF band miniaturized electronic duplexer", and the Chinese Utility Model Patent No. CN200920103975.1 discloses "a low-noise "Electrically tuned filter", the coupling structure adopted is a right-angled trapezoidal or rectangular single coupling hole form, which can cover a wide frequency range, but in the case of broadband signals, it is difficult to achieve a wider octave tuning range Within, maintain a constant bandwidth, good amplitude-frequency and echo characteristics.

[0003] In the prior art, "Journal of Sichuan Institute of Light Chemical Industry" 1997 No. 3 article ...

Claims

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