A tapped stepped-impedance balun with dual-band operations

Hualiang Zhang, Yitian Peng, Hao Xin

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

This letter presents the design of a dual-band balun using tapped stubs and stepped-impedance structures. By adjusting the impedances of the tapped stubs properly, the two output signals of the balun are out-of-phase at the two operating frequencies which is essential for the balun operation. Meanwhile, the stepped-impedance structure is designed to satisfy the dual-band matching condition at the input port. Closed form design equations are derived using the even-odd mode method. Based on these equations, a microstrip balun on Rogers' duroid/RT 5880 substrate operating at 2.45 GHz/5.25 GHz is designed, fabricated, and measured. The measurement results verify the dual-band operations of the balun. Finally, the impedance transformation property of the proposed dual-band balun is discussed.

Original languageEnglish (US)
Article number921315
Pages (from-to)119-122
Number of pages4
JournalIEEE Antennas and Wireless Propagation Letters
Volume7
DOIs
StatePublished - 2008

Fingerprint

Substrates

Keywords

  • Balun
  • Dual band
  • Impedance transforming

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

A tapped stepped-impedance balun with dual-band operations. / Zhang, Hualiang; Peng, Yitian; Xin, Hao.

In: IEEE Antennas and Wireless Propagation Letters, Vol. 7, 921315, 2008, p. 119-122.

Research output: Contribution to journalArticle

@article{a2d690aea70d423f847820366283cfdf,
title = "A tapped stepped-impedance balun with dual-band operations",
abstract = "This letter presents the design of a dual-band balun using tapped stubs and stepped-impedance structures. By adjusting the impedances of the tapped stubs properly, the two output signals of the balun are out-of-phase at the two operating frequencies which is essential for the balun operation. Meanwhile, the stepped-impedance structure is designed to satisfy the dual-band matching condition at the input port. Closed form design equations are derived using the even-odd mode method. Based on these equations, a microstrip balun on Rogers' duroid/RT 5880 substrate operating at 2.45 GHz/5.25 GHz is designed, fabricated, and measured. The measurement results verify the dual-band operations of the balun. Finally, the impedance transformation property of the proposed dual-band balun is discussed.",
keywords = "Balun, Dual band, Impedance transforming",
author = "Hualiang Zhang and Yitian Peng and Hao Xin",
year = "2008",
doi = "10.1109/LAWP.2008.921315",
language = "English (US)",
volume = "7",
pages = "119--122",
journal = "IEEE Antennas and Wireless Propagation Letters",
issn = "1536-1225",
publisher = "Institute of Electrical and Electronics Engineers Inc.",

}

TY - JOUR

T1 - A tapped stepped-impedance balun with dual-band operations

AU - Zhang, Hualiang

AU - Peng, Yitian

AU - Xin, Hao

PY - 2008

Y1 - 2008

N2 - This letter presents the design of a dual-band balun using tapped stubs and stepped-impedance structures. By adjusting the impedances of the tapped stubs properly, the two output signals of the balun are out-of-phase at the two operating frequencies which is essential for the balun operation. Meanwhile, the stepped-impedance structure is designed to satisfy the dual-band matching condition at the input port. Closed form design equations are derived using the even-odd mode method. Based on these equations, a microstrip balun on Rogers' duroid/RT 5880 substrate operating at 2.45 GHz/5.25 GHz is designed, fabricated, and measured. The measurement results verify the dual-band operations of the balun. Finally, the impedance transformation property of the proposed dual-band balun is discussed.

AB - This letter presents the design of a dual-band balun using tapped stubs and stepped-impedance structures. By adjusting the impedances of the tapped stubs properly, the two output signals of the balun are out-of-phase at the two operating frequencies which is essential for the balun operation. Meanwhile, the stepped-impedance structure is designed to satisfy the dual-band matching condition at the input port. Closed form design equations are derived using the even-odd mode method. Based on these equations, a microstrip balun on Rogers' duroid/RT 5880 substrate operating at 2.45 GHz/5.25 GHz is designed, fabricated, and measured. The measurement results verify the dual-band operations of the balun. Finally, the impedance transformation property of the proposed dual-band balun is discussed.

KW - Balun

KW - Dual band

KW - Impedance transforming

UR - http://www.scopus.com/inward/record.url?scp=65549146866&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=65549146866&partnerID=8YFLogxK

U2 - 10.1109/LAWP.2008.921315

DO - 10.1109/LAWP.2008.921315

M3 - Article

AN - SCOPUS:65549146866

VL - 7

SP - 119

EP - 122

JO - IEEE Antennas and Wireless Propagation Letters

JF - IEEE Antennas and Wireless Propagation Letters

SN - 1536-1225

M1 - 921315

ER -