Novel balanced bandpass filters using substrate integrated half-mode waveguide

Min Hua Ho, Cheng Siou Li

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

The contribution of this work is to propose novel balanced bandpass filters (BPFs) using the half-mode substrate integrated waveguide (HMSIW) and its size-reduced form, a folded HMSIW structure. The size of an HMSIW is about half of the substrate integrated waveguide (SIW) and the size of the folded HMSIW further reduces to 25%. Besides compactness, the proposed BPFs are attractive because the thru-via array needed for providing the side-wall effect is no longer required. In addition, the common-mode (CM) rejection of the HMSIW BPF is achieved from the non-coupling slots, caused by the PMC. The CM rejection of the folded HMSIW BPF is obtained by up-shifting the CM operating frequency far away from the differential-mode (DM) passband. Prototypes of the proposed circuits are fabricated and measured to present CM rejection levels larger than 40 dB over a wide frequency range and DM insertion losses around 2 dB in the passbands. Agreements between measured and simulated data are observed to validate the circuit design and performance.

Original languageEnglish
Article number6415314
Pages (from-to)78-80
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Volume23
Issue number2
DOIs
Publication statusPublished - 2013 Jan 22

Fingerprint

Substrate integrated waveguides
Bandpass filters
bandpass filters
Waveguides
waveguides
Substrates
Waveguide filters
rejection
Networks (circuits)
Insertion losses
void ratio
insertion loss
slots

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

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Novel balanced bandpass filters using substrate integrated half-mode waveguide. / Ho, Min Hua; Li, Cheng Siou.

In: IEEE Microwave and Wireless Components Letters, Vol. 23, No. 2, 6415314, 22.01.2013, p. 78-80.

Research output: Contribution to journalArticle

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