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Half-mode substrate integrated waveguide band-pass filter

A half-mode substrate integrated, band-pass filter technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problem that it is difficult to obtain wide stopband suppression effect, and achieve compact structure, simple design, and low loss Effect

Inactive Publication Date: 2015-12-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the existence of high-order modes, it is difficult to obtain a wide stopband suppression effect for the band-pass filter based on the substrate-integrated waveguide and the half-mode substrate-integrated waveguide

Method used

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  • Half-mode substrate integrated waveguide band-pass filter
  • Half-mode substrate integrated waveguide band-pass filter
  • Half-mode substrate integrated waveguide band-pass filter

Examples

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Embodiment

[0036] This embodiment provides a miniaturized ultra-wide stopband half-mode substrate integrated waveguide bandpass filter, its structure is as follows figure 1 and figure 2 As shown, the dielectric substrate 2 adopts the Rogersduroid5880 substrate with a thickness of 0.787mm, and its relative permittivity ε r =2.2, loss tangent tanδ=0.0009; wherein, the number of slots 6 set on each trapezoidal metal patch 4 is 4; the interdigitated capacitor 7 has 7 finger lines, and the finger line width and finger line The line intervals are equal; the metallized through-hole array 5 is a cylindrical through-hole array, and the metal patch in the electromagnetic bandgap structure 9 is rectangular.

[0037] The through-hole diameter of the metallized through-hole array 5 is 0.8mm, and the through-hole gap is 0.75mm. The specific structural size marks of the miniaturized ultra-wide stopband half-mode substrate-integrated waveguide bandpass filter are as follows: image 3 As shown, the spe...

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Abstract

The invention provides a miniaturized ultra-wide stopband half-mode substrate integrated waveguide band-pass filter, which belongs to the technical field of microwaves and millimeter waves. The half-mode substrate integrated waveguide band-pass filter comprises a half-mode substrate integrated waveguide unit and defected microstrip feeders at both ends, loads electromagnetic band-gap structures and composite left-right-hand structures through the half-mode substrate integrated waveguide, so that the filter is small in size and compact in structure, and can be applied to many communication systems. In addition, the half-mode substrate integrated waveguide band-pass filter adopts the defected microstrip impedance tapered lines as the input and output feeders, effectively suppresses out-of-band harmonic waves, greatly broadens stopband bandwidth of the filter, and shows the ultra-wide stopband feature. The half-mode substrate integrated waveguide band-pass filter ensures the stopband bandwidth, and has excellent performance in aspects of insertion loss, return loss, selectivity and the like.

Description

technical field [0001] The invention belongs to the field of microwave and millimeter waves, in particular to an ultra-wide stopband half-mode substrate integrated waveguide bandpass filter. Background technique [0002] In modern wireless communication systems, bandpass filters are widely used as an important component. Facing the requirements of future intelligent wireless communication applications, modern microwave communication systems also put forward higher requirements for the performance and structure of bandpass filters. On the one hand, they are not only required to have good in-band characteristics, such as low insertion loss, high selectivity, etc., but also to have a wide stop band or even an ultra-wide stop band to suppress the impact of high-order harmonics on the RF front-end. On the other hand, with the development of integrated circuit technology, the volume of transceivers is decreasing day by day. Under the requirements of this trend, the research on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/212
Inventor 张巧利王秉中
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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