volume | PIER Journals

2014-02-19

A Folded Printed Quadrifilar Helical Antenna Employing a Compact Feeding Network

Ping Xu,

Dr. Ping Xu

Xidian University

China

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Ze-Hong Yan,

Dr. Ze-Hong Yan

Xidian University

China

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Xiao-Qiang Yang,

Mr. Xiao-Qiang Yang

National Key Laboratory of Science and Technology on Antennas and Microwaves

Xidian University

China

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Tian-Ling Zhang

Dr. Tian-Ling Zhang

National Key Laboratory of Antennas and Microwave Technology

Xidian University

China

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Progress In Electromagnetics Research Letters, Vol. 45, 57-61, 2014

doi:10.2528/PIERL14012801

Abstract

A folded printed quadrifilar helical antenna (FPQHA) with an integrated and compact feeding network is proposed. The axial length of the proposed antenna is miniaturized of about 54.7% than the conventional PQHA by folding the helix arms into several elements. A T-junction power divider combining with two Wilkinson power dividers is utilized to feed the antenna. A fabricated prototype of the FPQHA using the compact feeding network is presented. The measured positive gain bandwidth covers 380-430 MHz with the reflection coefficient below -20 dB, axial ratio below 1.5 dB and a half-power beamwidth of about 120˚. Details of the proposed antenna design and experimental results are presented and discussed.

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Ping Xu, Ze-Hong Yan, Xiao-Qiang Yang, and Tian-Ling Zhang, "A Folded Printed Quadrifilar Helical Antenna Employing a Compact Feeding Network," Progress In Electromagnetics Research Letters, Vol. 45, 57-61, 2014.
doi:10.2528/PIERL14012801

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