Pattern reconfigurable wideband circularly-polarized quadrifilar helix with broadside and backfire radiation patterns

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review

6 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Title of host publication2015 9th European Conference on Antennas and Propagation, EuCAP 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9788890701856
Publication statusPublished - 27 Aug 2015

Conference

Title9th European Conference on Antennas and Propagation (EuCAP 2015)
LocationThe Lisbon Congress Centre
PlacePortugal
CityLisbon
Period13 - 17 April 2015

Abstract

This paper introduces a pattern reconfigurable wideband circularly-polarized (CP) quadrifilar helical antenna (QHA) with both broadside and backfire radiation modes. A compact 1:4 power divider network is proposed to feed the QHA for obtaining the wide bandwidth. To realize pattern diversity, PIN diodes on the power divider are to reconfigure the sequences of the output phases such that the direction of radiation pattern can be controlled alternatively for the broadside or the backfire radiation. The fabricated antenna prototype is compact and light-weight. Measured results show that the broadside and backfire radiation modes can be switched by applying opposite voltages on the two DC bias. The proposed QHA has the wide impedance bandwidth of 43% and the wide 3-dB AR bandwidth of 38%. The measured broadside and backfire radiations have the wide 3-dB gain beamwidth of 140° and 120° with the maximum gain of 2.3 and 3.0 dBic respectively. The proposed antenna can be used in many applications as subway and railway communications, base station for narrow street coverage, RFID or satellite systems.

Research Area(s)

  • broadside and backfire radiation modes, pattern reconfigurable, quadrifilar helix antenna

Citation Format(s)

Pattern reconfigurable wideband circularly-polarized quadrifilar helix with broadside and backfire radiation patterns. / Lin, Wei; Wong, Hang.

2015 9th European Conference on Antennas and Propagation, EuCAP 2015. Institute of Electrical and Electronics Engineers Inc., 2015. 7228709.

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review