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Ultra-wideband filter

An ultra-wideband filter and width technology, applied in the field of filters, can solve the problems of poor out-of-band suppression, low yield and difficult debugging, and achieve the effects of low insertion loss, high yield and convenient debugging.

Inactive Publication Date: 2012-01-18
成都赛纳赛德科技有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] Traditional ultra-wideband filters are mostly implemented with structures such as microstrip lines, slot lines, and defect grounds. This type of filter has the characteristics of small size, but also has large insertion loss, poor out-of-band rejection, difficult debugging, and low yield. shortcoming

Method used

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] Such as figure 1 , 2 As shown, an ultra-wideband filter is mainly composed of a cavity 2, a conductive structure arranged at the bottom of the cavity 2, and a cover plate 1 connected to the notch of the cavity 2, and the conductive structure is connected with an input and output structure 3. The output structure 3 runs through the cover plate 1 .

[0030] The conductive structure is mainly composed of 10 comb teeth 6 arranged at the bottom of the cavity 2 and a ridge structure 7 arranged between two adjacent comb teeth, and the ridge structure 7 is connected with the bottom of the cavity 2 .

[0031] There is a gap between the comb teeth 6 and the cover plate 1 .

[0032] Both the width of the ridge structure 7 and the width of the comb teeth 6 are 30% to 50% of the width of the cavity 2 . That is, the ridge structure 7 is 30% to 50...

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Abstract

The invention discloses an ultra-wideband filter which comprises a chamber and a cover plate arranged at the top end of the chamber, wherein the bottom of the interior of the chamber is provided with multiple comb teeth and ridge structures; the cover plate is provided with an input and output structure, and a tuning screw and a mounting screw are arranged on the cover plate. The ultra-wideband filter provided by the invention has the advantages of simpleness for processing, low processing cost, convenience for debugging, low insertion loss, good out-of-band restraint and high yield and the like. The ultra-wideband filter provided by the invention is expected to be widely used in an ultra-wideband wireless communication system, especially the military and civil fields including radar, missile guidance, electronic countermeasure, communication, etc.

Description

technical field [0001] The patent of the present invention relates to a filter, in particular to an ultra-wideband filter using a cavity comb structure. Background technique [0002] Assume that the low-end frequency and high-end frequency of the passband of the filter are respectively and , we define the relative bandwidth of the filter as . The so-called ultra-wideband filter refers to a bandpass filter with a relative bandwidth exceeding 25%. With the rapid development of UWB wireless communication technology, higher requirements are put forward for UWB wireless communication electronic equipment. The filter plays an important role in the ultra-wideband wireless communication system. It plays an important role in selecting signals and is an essential and important component in the ultra-wideband wireless communication system. Its working performance directly affects the ultra-wideband wireless The overall performance of the communication system. [0003] Traditio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/207H01P1/205
Inventor 王邱林王清源罗志刚
Owner 成都赛纳赛德科技有限公司
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