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Resonator with symmetric double helix structure and filter thereof

A double helix structure and resonator technology, applied in resonators, waveguide devices, electrical components, etc., can solve the problem of quality factor reduction, and achieve the effects of weakening coupling effect, reducing size, and improving frequency selectivity.

Inactive Publication Date: 2005-06-01
海泰超导通讯科技(天津)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resonator directions of this filter structure are all in the same direction. In order to shorten the entire resonator length, the capacitance part of the resonator can be increased and the inductance part can be reduced, but its quality factor (Q value) will increase with the such adjustments are reduced;

Method used

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  • Resonator with symmetric double helix structure and filter thereof
  • Resonator with symmetric double helix structure and filter thereof
  • Resonator with symmetric double helix structure and filter thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: A symmetrical double helix structure resonator 50 proposed by the present invention is characterized in that it is composed of two sets of microstrip lines 52 arranged in a linear symmetry and connected in a helical structure 50a, 50b. The two ports 51a, 51b of the microstrip line 52 are respectively located in the middle of the two helical structures 50a, 50b.

[0028] The number of turns of the microstrip line 52 in the two helical structures 50a, 50b of the above-mentioned symmetrical double helical resonator 50 can be determined according to actual needs.

[0029] The shape of the above-mentioned symmetrical double helix structure resonator can be different shapes, including rectangle, rectangle with rounded corners, square, square with rounded corners.

[0030] A filter 60 based on the above-mentioned symmetrical double helix structure resonator 50 proposed by the present invention is characterized in that it is composed of an input microstrip 61, an ...

Embodiment 2

[0035] Embodiment 2: The filter 60 mentioned above can also be made of metal thin film.

Embodiment 3

[0036] Embodiment 3: The relationship between the input microstrip 71 and the output microstrip 72 of the above-mentioned filter 70 and the closest resonator 50 in the resonator array can be a coupling excitation relationship.

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Abstract

The present invention is one kind of symmetric double-spiral resonator and the band-pass filter therewith. The present invention features that the resonator consists of two linearly symmetric microstrip lines in spiral structure and connected into one integral, and the band-pass filter consists of input microstrip, output microstrip and resonator array comprising several double-spiral resonators. The filter of the present invention has the advantages of excellent frequency selectivity, high stop band suppression; and the resonator in symmetric double-spiral structure has reduced size, reduced coupling effect of non-adjacent resonators, and simplified circuit design and regulation. The present invention makes it possible to make traditional planar microstrip filter with common metal material and is suitable for making high temperature superconductive filter with high quality factor.

Description

(1) Technical field: [0001] The invention relates to a resonator suitable for microwave communication and a band-pass filter formed by it, especially a symmetrical double-helix structure resonator and filter suitable for microwave communication. The filter can use high-temperature superconducting made of film. (two) background technology: [0002] For a long time, the filter has played an extremely important role in the processing of electronic signals, and it has the function of filtering the used signal and suppressing the interference signal. The ideal filter frequency characteristic should be that the energy loss in the passband is as small as possible, while the energy attenuation in the stopband is as large as possible, and the transition band between the passband and the stopband should be as steep as possible. With the rapid development of microwave wireless communication, higher and higher requirements are placed on the frequency characteristics of filters. The hi...

Claims

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Application Information

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IPC IPC(8): H01P1/203H01P7/00H01P7/08
Inventor 季来运陈勤文
Owner 海泰超导通讯科技(天津)有限公司
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