Miniaturized dual-mode filter based on HMSIW cavity and zero adjustment method

A filter and cavity technology, which is applied in the microwave field, can solve the problems of limited application, difficulty in expanding the filter structure, and inability to generate transmission zero points, etc., to achieve the effect of improving flexibility and greater flexibility

Active Publication Date: 2021-03-26
HANGZHOU DIANZI UNIV
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Problems solved by technology

For example, the quarter-wavelength transmission line resonant mode (quasi-TEM mode) and the higher-order cavity resonant mode (TE 102 mode) can realize a QMSIW dual-mode filter, but this dual-mode resonator itself cannot generate a transmission zero point, and needs to design a complex source-load coupling structure at the input and output ends to generate a transmission zero point, and the position of the transmission zero point is difficult to effectively adjust
By etching the CPW resonator and

Method used

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  • Miniaturized dual-mode filter based on HMSIW cavity and zero adjustment method
  • Miniaturized dual-mode filter based on HMSIW cavity and zero adjustment method
  • Miniaturized dual-mode filter based on HMSIW cavity and zero adjustment method

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[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] Such as figure 1 As shown, the present invention provides a small-sized double-mode filter based on the HMSIW cavity, including the HMSIW rectangular cavity 1, metallized via nhavilion 2, slotted nausea 3. Feeding microstrip 4, ladder type Adapter 5,50 ohm micropipe 6, input port 7 and output port 8; the structure of the entire filter is sorry, metallized through hole nausea 2 and the groove line naked 3 located at the center line of the HMSIW rectangular cavity 1 on.

[0030] figure 1 The size identification description is as follows: L HFor the length of the HMSIW rectangular cavity 1, W H For the width of the HMSIW rectangular cavity 1, s is the distance from the metallized via nausea 2 to the side wall of the cavity, W S For the width of the slot line, L S For the length of the slot line, W F For the width of the feed microstrip 4, D is the distance between the...

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Abstract

The invention discloses a miniaturized dual-mode filter based on an HMSIW cavity and a zero point adjustment method. The dual-mode filter comprises the HMSIW rectangular cavity, metallized through hole perturbation, slot line perturbation, a feed microstrip, a trapezoidal adapter, a 50-ohm microstrip line, an input port and an output port. The area of the dual-mode filter is only half of that of atraditional SIW dual-mode filter, each HMSIW cavity can generate two transmission zero points with controllable positions, and highly flexible filtering response can be achieved.

Description

technical field [0001] The invention belongs to the field of microwave technology and relates to a miniaturized dual-mode filter, in particular to a miniaturized dual-mode filter based on an HMSIW cavity and a zero point adjustment method. Background technique [0002] Substrate-integrated waveguide (SIW) filters have been widely used in modern microwave and millimeter-wave wireless communication systems due to their low loss, low cost, low profile, easy processing and easy integration. However, compared with microstrip or coplanar waveguide (CPW) filters, SIW filters have a larger size problem. To solve this problem, a common method is to make full use of two or more resonance modes in the SIW cavity to construct a dual-mode or multi-mode SIW filter, thereby reducing the number of SIW cavities. Not only that, dual-mode or multi-mode SIW filters can also generate position-controllable transmission zeros to achieve flexible filter response, but because they use a full-mode S...

Claims

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Application Information

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IPC IPC(8): H01P1/207
CPCH01P1/207
Inventor 朱舫罗国清张晓红代喜望游彬
Owner HANGZHOU DIANZI UNIV
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