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Miniature C-band band-pass filter with low insertion loss and excellent high-order harmonic suppression

A high-order harmonic suppression, micro-strip technology, applied in the field of filters, can solve the problems of limitation, volume and large insertion loss, and achieve the effects of low cost, good high-order harmonic suppression, and low loss

Inactive Publication Date: 2012-06-20
WUXI NANLIGONG TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional filter design methods, such as hairpin filter structure, resonant cavity filter structure and coaxial filter structure, have large volume and insertion loss. In many applications (such as: airborne, missile-borne, aerospace communication , handheld wireless terminals, individual mobile communication terminals, etc.) are all subject to great restrictions

Method used

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  • Miniature C-band band-pass filter with low insertion loss and excellent high-order harmonic suppression
  • Miniature C-band band-pass filter with low insertion loss and excellent high-order harmonic suppression
  • Miniature C-band band-pass filter with low insertion loss and excellent high-order harmonic suppression

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Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0015] combine figure 1 , figure 2 , image 3 , a C-band low insertion loss high-order harmonic suppression microfilter of the present invention, the C-band low insertion loss high-order harmonic suppression microfilter includes a surface-mounted 50 ohm impedance input port P1, input resonance stages L6, C6 , The first level parallel resonance unit L1, C1, the first zero point setting circuit L12, C12, the second level parallel resonance unit L2, C2, the second zero point setting circuit L23, C23, the third level parallel resonance unit L3, C3 , the third zero-point setting circuit L34, C34, the fourth-stage parallel resonant unit L3, C3, the fourth zero-point setting circuit L45, C45, the fifth-stage parallel resonant unit L5, C5, the output resonant stage L7, C7, the first Coupling capacitor C8, second coupling capacitor C9, surface-mounted 50-ohm imped...

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Abstract

The invention discloses a miniature C-band band-pass filter with low insertion loss and excellent high-order harmonic suppression, which comprises an input port, an output port, an input inductor, an output inductor, an input capacitor, an output capacitor, five parallel resonance units, four zero set units, two cross-coupled capacitors and the like. All components comprise more than two layers and are realized by low-temperature co-fired ceramic technology, the input inductor, the output inductor, the input capacitor and the output capacitor are in a strip line design according to distributed parameters, intervalve inductors and intervalve capacitors adopt space coupling and distributed parameters, the cross-coupled capacitors are dielectric tablet 'Z'-shaped capacitors, and all the five parallel resonance units are in a three-layer folding and coupling strip line design. The band-pass filter of a stacked structure based on the low-temperature co-fired ceramic technology has the advantages of small size, light weight, high reliability, low insertion loss, excellent high-order harmonic suppression and the like, and meets the requirements of fields such as electronic communication and the like on miniaturization and integration of the electronic components.

Description

technical field [0001] The invention relates to a filter, in particular to a C-band low insertion loss high-order harmonic suppression miniature band-pass filter. Background technique [0002] With the rapid development of microelectronic information technology, electronic complete machines and communication products are rapidly developing in the direction of small, light and thin, which has prompted the electronic components to also tend to be miniaturized, integrated and high-frequency. In addition, with the development of communication technology, the frequency resources are increasingly tight, and the channel intervals allocated to various communication frequency bands are getting closer and closer, resulting in more and more signal interference between systems. In order to reduce the attenuation of the signal by the system and suppress various interference signals, it has become a research hotspot at home and abroad to develop filters with narrow band, small size and hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/212
Inventor 戴永胜汉敏戚湧尹洪浩李平谢秋月韩群飞冯媛左同生孙宏途
Owner WUXI NANLIGONG TECH DEV
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