Analysis of dielectric loaded cubical cavity for triple-mode filter design

Chua, Lye Heng; Mirshekar‐Syahkal, D.

doi:10.1049/ip-map:20040125

Cited by 13 publications

(4 citation statements)

References 10 publications

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“…Later on, a vast variety of triple‐mode structures were reported in Refs. for further weight and volume savings. The traditional perturbation design approach can be classified into three categories using the screws , irises , and corner cuts for exciting multi‐modes within a single metal cavity.…”

Section: Introductionmentioning

confidence: 99%

“… for further weight and volume savings. The traditional perturbation design approach can be classified into three categories using the screws , irises , and corner cuts for exciting multi‐modes within a single metal cavity. However, each of them has their intrinsic shortcomings, e.g., leading a high insertion loss, lower the quality factor, increasing the complexity in tuning.…”

Section: Introductionmentioning

confidence: 99%

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A compact triple-mode dielectric resonator in cylindrical cavity filter

Wong

Feng

Zhang

et al. 2016

Microw. Opt. Technol. Lett.

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A compact triple-mode dielectric resonator (DR) bandpass filter (BPF) based on a single waveguide cavity is proposed, while three resonant modes of a single cavity are classified as a TM mode and a pair of hybrid degenerate modes (HE modes). Two HE degeneration modes in a single metal cavity are excited by using an off-centered DR approach. They work together to constitute a three-pole passband with a fractional bandwidth of 2.7% at the central frequency of 2.53 GHz. To verify the proposed idea, the proposed triple-mode DR BPF is fabricated by using silver plated aluminum metal cavity, and the simulated and measured results are in good agreement.ABSTRACT: In this article, a 220 GHz frequency tripler using threedimensional (3D) electromagnetic simulation is designed. Due to the characteristics of extremely short working wavelength and ultra-small Figure 6 Simulated (dashed line) and measured (solid line) frequency responses of reflection and transmission coefficients. [Color figure can be viewed in the online issue, which is available at wileyonlinelibrary.com] Figure 7 Photograph of the fabricated triple-mode filter. [Color figure can be viewed in the online issue, which is available at wileyonlinelibrary. com]

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A compact triple-mode dielectric resonator in cylindrical cavity filter

Wong

Feng

Zhang

et al. 2016

Microw. Opt. Technol. Lett.

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“…Dual-and triple-mode filters satisfy these requirements [1,2]. To date, various types of dual-mode [2][3][4][5][6][7] and triple-mode [8][9][10][11][12] filters have been proposed. A conventional approach in dual-mode and triple-mode filter designs is based on using the degenerate modes of a cavity.…”

Section: Introductionmentioning

confidence: 99%

“…In [10], a triple-mode filter using TE 101 /TE 011 /TM 110 degenerate modes in a cubic cavity was proposed. Degenerate modes in a cavity may be coupled to each other by a perturbation as a coupling element such as a screw in a cylindrical cavity [4] or cubic dielectric resonator [9], corner cut in a rectangular cavity [2,8] and additional patch or corner cut in a microstrip cavity [5][6][7]. In all of them, the perturbation is located in the symmetrical plane of two degenerate modes and causes the 'mode splitting'.…”

Section: Introductionmentioning

confidence: 99%

Realisation of new single‐layer triple‐mode substrate‐integrated waveguide and dual‐mode half‐mode substrate‐integrated waveguide filters using a circular shape perturbation

Rezaee¹,

Attari²

2013

IET Microwaves, Antennas & Propagation

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A method of ‘mode shifting’ is presented for realisation of triple‐mode and dual‐mode filters, in which the resonant frequency of one mode is shifted near to the resonant frequency of another mode using a perturbation. To realise a triple‐mode filter, a single‐layer substrate‐integrated waveguide (SIW) square cavity is perturbed by introducing vias at the middle of the structure. This perturbation causes mode shifting of the dominant mode (TE101) near to the next modes (TE102 and TE201). Operation of this triple‐mode resonator is analysed and resonant frequencies of the perturbed cavity are obtained theoretically. A triple‐mode filter is realised using this resonator and the filter is modelled by a coupling matrix based on the global eigenmodes. Moreover, by using the mode shifting technique, a novel dual‐mode bandpass filter with half‐mode SIW (HMSIW) structure is presented. Both the triple‐mode SIW and dual‐mode HMSIW filters are fabricated on a single‐layer substrate using a printed circuit board process.

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