Compact balanced bandpass filter design using miniaturised substrate integrated waveguide cavities

Min-Hua Ho, Cheng You Hou, Chung I.G. Hsu, Keh Yi Lee

Research output: Contribution to journalArticle

Abstract

The contribution of this work is to propose a compact balanced bandpass filter design using the miniaturised full/halfmode substrate integrated waveguide cavities (SIWCs) together with the microstrip coupling slot feed. The circuit area of the proposed full-mode SIWC is only 4.64% of its conventional SIWC counterpart, and the half-mode SIWC further reduces the circuit area by half. Besides the circuit compactness, the non-coupling of the microstrip and the slot in the common-mode (CM) operation provides an excellent CM signal rejection. Prototypes of two-pole full/half-mode balanced SIWC BPFs are fabricated and measured to validate the circuit design. Agreements between measured and simulated data are observed. The CM signal rejection levels are larger than 45 dB over a wide-frequency range with the passband's differential-mode insertion losses around 1.6 and 0.8 dB for the full- and half-mode designs, respectively.

Original languageEnglish
Pages (from-to)2030-2033
Number of pages4
JournalIET Microwaves, Antennas and Propagation
Volume12
Issue number13
DOIs
Publication statusPublished - 2018 Oct 31

Fingerprint

Substrate integrated waveguides
Bandpass filters
Networks (circuits)
Insertion losses
Poles

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

@article{9a4dbb7287e94bb68ed2d99e6ed1bf3e,
title = "Compact balanced bandpass filter design using miniaturised substrate integrated waveguide cavities",
abstract = "The contribution of this work is to propose a compact balanced bandpass filter design using the miniaturised full/halfmode substrate integrated waveguide cavities (SIWCs) together with the microstrip coupling slot feed. The circuit area of the proposed full-mode SIWC is only 4.64{\%} of its conventional SIWC counterpart, and the half-mode SIWC further reduces the circuit area by half. Besides the circuit compactness, the non-coupling of the microstrip and the slot in the common-mode (CM) operation provides an excellent CM signal rejection. Prototypes of two-pole full/half-mode balanced SIWC BPFs are fabricated and measured to validate the circuit design. Agreements between measured and simulated data are observed. The CM signal rejection levels are larger than 45 dB over a wide-frequency range with the passband's differential-mode insertion losses around 1.6 and 0.8 dB for the full- and half-mode designs, respectively.",
author = "Min-Hua Ho and Hou, {Cheng You} and Hsu, {Chung I.G.} and Lee, {Keh Yi}",
year = "2018",
month = "10",
day = "31",
doi = "10.1049/iet-map.2018.5202",
language = "English",
volume = "12",
pages = "2030--2033",
journal = "IET Microwaves, Antennas and Propagation",
issn = "1751-8725",
publisher = "Institution of Engineering and Technology",
number = "13",

}

Compact balanced bandpass filter design using miniaturised substrate integrated waveguide cavities. / Ho, Min-Hua; Hou, Cheng You; Hsu, Chung I.G.; Lee, Keh Yi.

In: IET Microwaves, Antennas and Propagation, Vol. 12, No. 13, 31.10.2018, p. 2030-2033.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Compact balanced bandpass filter design using miniaturised substrate integrated waveguide cavities

AU - Ho, Min-Hua

AU - Hou, Cheng You

AU - Hsu, Chung I.G.

AU - Lee, Keh Yi

PY - 2018/10/31

Y1 - 2018/10/31

N2 - The contribution of this work is to propose a compact balanced bandpass filter design using the miniaturised full/halfmode substrate integrated waveguide cavities (SIWCs) together with the microstrip coupling slot feed. The circuit area of the proposed full-mode SIWC is only 4.64% of its conventional SIWC counterpart, and the half-mode SIWC further reduces the circuit area by half. Besides the circuit compactness, the non-coupling of the microstrip and the slot in the common-mode (CM) operation provides an excellent CM signal rejection. Prototypes of two-pole full/half-mode balanced SIWC BPFs are fabricated and measured to validate the circuit design. Agreements between measured and simulated data are observed. The CM signal rejection levels are larger than 45 dB over a wide-frequency range with the passband's differential-mode insertion losses around 1.6 and 0.8 dB for the full- and half-mode designs, respectively.

AB - The contribution of this work is to propose a compact balanced bandpass filter design using the miniaturised full/halfmode substrate integrated waveguide cavities (SIWCs) together with the microstrip coupling slot feed. The circuit area of the proposed full-mode SIWC is only 4.64% of its conventional SIWC counterpart, and the half-mode SIWC further reduces the circuit area by half. Besides the circuit compactness, the non-coupling of the microstrip and the slot in the common-mode (CM) operation provides an excellent CM signal rejection. Prototypes of two-pole full/half-mode balanced SIWC BPFs are fabricated and measured to validate the circuit design. Agreements between measured and simulated data are observed. The CM signal rejection levels are larger than 45 dB over a wide-frequency range with the passband's differential-mode insertion losses around 1.6 and 0.8 dB for the full- and half-mode designs, respectively.

UR - http://www.scopus.com/inward/record.url?scp=85054959331&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85054959331&partnerID=8YFLogxK

U2 - 10.1049/iet-map.2018.5202

DO - 10.1049/iet-map.2018.5202

M3 - Article

AN - SCOPUS:85054959331

VL - 12

SP - 2030

EP - 2033

JO - IET Microwaves, Antennas and Propagation

JF - IET Microwaves, Antennas and Propagation

SN - 1751-8725

IS - 13

ER -