Design of balanced and balun diplexers using stepped-impedance slot-line resonators

Pi Hung Wen, Chung I.G. Hsu, Ching-Her Lee, Hsun-Hsiang Chen

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A balanced diplexer and a balun diplexer, both designed for the two channels of 2.45-GHz WLAN and 3.55-GHz WiMAX, are proposed with high common-mode (CM) suppression and differential-mode (DM) isolation in this paper. For the balanced diplexer, balanced BPFs for the two desired channels were first designed using stepped-impedance slot-line resonators (SISLRs). Through two T-junctions, the two BPFs were subsequently combined to form a three-balanced-port diplexer having six single-ended ports. Such a balanced diplexer can be easily converted into a balun diplexer with one single-ended and two balanced ports. For that purpose, one of the T-junctions and its associated two feeding lines are removed, and the feeding lines connected to the other T-junction are modified. For both diplexers, the measured CM suppressions (DM isolations) are larger than 54.3 (39.5), 52.2 (44.5), and 40.7 (38.7) dB, respectively, in the lower channel, the upper channel, and the displayed frequency range of 1-6 GHz. A satisfactory agreement has been validated between the simulated and measured results.

Original languageEnglish
Pages (from-to)700-715
Number of pages16
JournalJournal of Electromagnetic Waves and Applications
Volume28
Issue number6
DOIs
Publication statusPublished - 2014 Apr 13

Fingerprint

diplexers
slots
Resonators
resonators
impedance
Wireless local area networks (WLAN)
isolation
retarding
frequency ranges

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy(all)
  • Electrical and Electronic Engineering

Cite this

@article{94b649f71d8a4c2f8e6db28afa2ea081,
title = "Design of balanced and balun diplexers using stepped-impedance slot-line resonators",
abstract = "A balanced diplexer and a balun diplexer, both designed for the two channels of 2.45-GHz WLAN and 3.55-GHz WiMAX, are proposed with high common-mode (CM) suppression and differential-mode (DM) isolation in this paper. For the balanced diplexer, balanced BPFs for the two desired channels were first designed using stepped-impedance slot-line resonators (SISLRs). Through two T-junctions, the two BPFs were subsequently combined to form a three-balanced-port diplexer having six single-ended ports. Such a balanced diplexer can be easily converted into a balun diplexer with one single-ended and two balanced ports. For that purpose, one of the T-junctions and its associated two feeding lines are removed, and the feeding lines connected to the other T-junction are modified. For both diplexers, the measured CM suppressions (DM isolations) are larger than 54.3 (39.5), 52.2 (44.5), and 40.7 (38.7) dB, respectively, in the lower channel, the upper channel, and the displayed frequency range of 1-6 GHz. A satisfactory agreement has been validated between the simulated and measured results.",
author = "Wen, {Pi Hung} and Hsu, {Chung I.G.} and Ching-Her Lee and Hsun-Hsiang Chen",
year = "2014",
month = "4",
day = "13",
doi = "10.1080/09205071.2014.885398",
language = "English",
volume = "28",
pages = "700--715",
journal = "Journal of Electromagnetic Waves and Applications",
issn = "0920-5071",
publisher = "Taylor and Francis Ltd.",
number = "6",

}

Design of balanced and balun diplexers using stepped-impedance slot-line resonators. / Wen, Pi Hung; Hsu, Chung I.G.; Lee, Ching-Her; Chen, Hsun-Hsiang.

In: Journal of Electromagnetic Waves and Applications, Vol. 28, No. 6, 13.04.2014, p. 700-715.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Design of balanced and balun diplexers using stepped-impedance slot-line resonators

AU - Wen, Pi Hung

AU - Hsu, Chung I.G.

AU - Lee, Ching-Her

AU - Chen, Hsun-Hsiang

PY - 2014/4/13

Y1 - 2014/4/13

N2 - A balanced diplexer and a balun diplexer, both designed for the two channels of 2.45-GHz WLAN and 3.55-GHz WiMAX, are proposed with high common-mode (CM) suppression and differential-mode (DM) isolation in this paper. For the balanced diplexer, balanced BPFs for the two desired channels were first designed using stepped-impedance slot-line resonators (SISLRs). Through two T-junctions, the two BPFs were subsequently combined to form a three-balanced-port diplexer having six single-ended ports. Such a balanced diplexer can be easily converted into a balun diplexer with one single-ended and two balanced ports. For that purpose, one of the T-junctions and its associated two feeding lines are removed, and the feeding lines connected to the other T-junction are modified. For both diplexers, the measured CM suppressions (DM isolations) are larger than 54.3 (39.5), 52.2 (44.5), and 40.7 (38.7) dB, respectively, in the lower channel, the upper channel, and the displayed frequency range of 1-6 GHz. A satisfactory agreement has been validated between the simulated and measured results.

AB - A balanced diplexer and a balun diplexer, both designed for the two channels of 2.45-GHz WLAN and 3.55-GHz WiMAX, are proposed with high common-mode (CM) suppression and differential-mode (DM) isolation in this paper. For the balanced diplexer, balanced BPFs for the two desired channels were first designed using stepped-impedance slot-line resonators (SISLRs). Through two T-junctions, the two BPFs were subsequently combined to form a three-balanced-port diplexer having six single-ended ports. Such a balanced diplexer can be easily converted into a balun diplexer with one single-ended and two balanced ports. For that purpose, one of the T-junctions and its associated two feeding lines are removed, and the feeding lines connected to the other T-junction are modified. For both diplexers, the measured CM suppressions (DM isolations) are larger than 54.3 (39.5), 52.2 (44.5), and 40.7 (38.7) dB, respectively, in the lower channel, the upper channel, and the displayed frequency range of 1-6 GHz. A satisfactory agreement has been validated between the simulated and measured results.

UR - http://www.scopus.com/inward/record.url?scp=84897644329&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84897644329&partnerID=8YFLogxK

U2 - 10.1080/09205071.2014.885398

DO - 10.1080/09205071.2014.885398

M3 - Article

VL - 28

SP - 700

EP - 715

JO - Journal of Electromagnetic Waves and Applications

JF - Journal of Electromagnetic Waves and Applications

SN - 0920-5071

IS - 6

ER -