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Asymmetrical waffle model filter

An asymmetric and filter technology, applied in waveguide devices, electrical components, circuits, etc., can solve problems such as deepening harmonic suppression depth and decreasing filter power capacity, and achieve deepening suppression depth, increasing capacitance, and broadening resistance The effect of bandwidth

Inactive Publication Date: 2018-09-04
UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to deepen its harmonic suppression depth and widen its stopband width, it is necessary to reduce the gap between the upper and lower corresponding metal pillars, resulting in a sharp drop in the power capacity of the filter

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Such as figure 1 , figure 2 As shown, an asymmetric Waffle-mode filter includes a resonant cavity 1, an input and output waveguide 5, and 8 horizontal rows and 8 vertical columns of metal pillars A2 connected to the resonant cavity 1 only at the bottom.

[0019] The asymmetric Waffle mode filter also includes a metal pillar B3 corresponding to each metal pillar A2 and connected to the resonant cavity 1 only at the top; the cross section of the metal pillar B3 is different from that of the metal pillar A2.

[0020] The metal pillars A2 are rectangular, and each metal pillar A2 corresponds to two rectangular metal pillars B3; each metal pillar A2 is embedded between two corresponding rectangular metal pillars B3. A metal pit 4 is arranged on the top of the resonant cavity 1 corresponding to each metal pillar A2; each metal pillar A2 is embedded in the corresponding metal pit 4.

Embodiment 2

[0022] Such as image 3 As shown, the difference between this implementation example and implementation example 1 is that each metal post A and each metal pit is a cylinder. No metal post B is provided on top of the cavity.

Embodiment 3

[0024] Such as Figure 4 As shown, the difference between this implementation example and implementation example 1 is that no metal pillar B is arranged on the top of the resonant cavity.

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Abstract

The invention discloses an asymmetrical waffle model filter which comprises a resonant cavity, an input and output wave guide, and more than two transverse or vertical metal columns A connected to theresonant cavity in the bottom. The asymmetrical waffle model filter also comprises metal columns B corresponding to the metal columns A and connected to the resonant cavity in the top; the cross section of each metal column B is different from that of each metal column A. The capacitance between corresponding metal columns A and B can be increased effectively under the condition that the power volume of a device is not obviously reduced as the gap between the corresponding metal columns A and B is not reduced, so that the stop band inhibiting depth of the filter is deepened and the stop bandbandwidth of the filter is expanded. The filter can be widely applied to radar, missile guidance and various mobile communication systems.

Description

technical field [0001] The invention relates to a microwave device, in particular to a type of compact high-power harmonic suppression filter. Background technique [0002] Due to the increasing implementation of international and domestic standards for electromagnetic compatibility, harmonic suppression in communication and military electronic systems has increasingly become a key technical issue. The Waffle Iron waveguide low-pass filter has low insertion loss, high power capacity and wide stopband characteristics, and is the main choice for harmonic suppression in high-power communication systems and medium and long-range radars. The traditional Waffle-mode waveguide low-pass filter is composed of vertically symmetrical metal pillar arrays arranged horizontally and vertically. In order to deepen its harmonic suppression depth and widen its stopband width, it is necessary to reduce the gap between the upper and lower corresponding metal pillars, resulting in a sharp drop ...

Claims

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Application Information

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IPC IPC(8): H01P1/212
CPCH01P1/212
Inventor 王清源徐立刘亮元陈又鲜
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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