Miniaturized bandpass filter design using substrate integrated waveguide cavities with enhanced signal selectivity

Min-Hua Ho, Keh Yi Lee, Yi Cheng Chen

Research output: Contribution to journalArticle

Abstract

We propose a miniaturized bandpass filter (BPF) design with enhanced signal selectivity performance. The proposed structure is composed of four square substrate integrated waveguide cavities (SIWCs). To miniaturize its circuit size, the applied cavities are under the evanescent mode resonance which is accomplished by loaded itself with a large capacitance. As a result, a 93.4% size reduction is achieved. The negative coupling structure is employed in the filter design to create two transmission zeroes by the pass band's two edges for enhancing the signal selectivity. Experiment is conducted to verify this compact SIWC BPF design.

Original languageEnglish
Pages (from-to)1185-1188
Number of pages4
JournalMicrowave and Optical Technology Letters
Volume61
Issue number5
DOIs
Publication statusPublished - 2019 May 1

Fingerprint

Substrate integrated waveguides
Bandpass filters
bandpass filters
selectivity
waveguides
cavities
Capacitance
capacitance
filters
Networks (circuits)
Experiments

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

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abstract = "We propose a miniaturized bandpass filter (BPF) design with enhanced signal selectivity performance. The proposed structure is composed of four square substrate integrated waveguide cavities (SIWCs). To miniaturize its circuit size, the applied cavities are under the evanescent mode resonance which is accomplished by loaded itself with a large capacitance. As a result, a 93.4{\%} size reduction is achieved. The negative coupling structure is employed in the filter design to create two transmission zeroes by the pass band's two edges for enhancing the signal selectivity. Experiment is conducted to verify this compact SIWC BPF design.",
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Miniaturized bandpass filter design using substrate integrated waveguide cavities with enhanced signal selectivity. / Ho, Min-Hua; Lee, Keh Yi; Chen, Yi Cheng.

In: Microwave and Optical Technology Letters, Vol. 61, No. 5, 01.05.2019, p. 1185-1188.

Research output: Contribution to journalArticle

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