A strip-helical dipole antenna with wide bandwidth and high gain

A wideband circularly polarized (CP) strip-helical dipole antenna is presented in this paper. Two tapered strip-helixes with one turn are placed over a ground plane and symmetric to each other with respect to the Z-Axis. Each of them is respectively fed with same magnitude and phase difference of 18...

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Bibliographic Details
Published in2016 International Symposium on Antennas and Propagation (ISAP) pp. 82 - 83
Main Authors Xihui Tang, Jilun Zhang
Format Conference Proceeding
LanguageEnglish
Published IEICE 01.10.2016
Subjects
Antenna radiation patterns
Broadband antennas
circular polarization
Dipole antennas
Gain
Helical antennas
helical dipole antenna
high gain
Wideband
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Summary:A wideband circularly polarized (CP) strip-helical dipole antenna is presented in this paper. Two tapered strip-helixes with one turn are placed over a ground plane and symmetric to each other with respect to the Z-Axis. Each of them is respectively fed with same magnitude and phase difference of 180° thus the whole radiator works as a helical dipole. Numerical results show that the proposed strip-helical dipole antenna has a wide 3-dB axial ratio (AR) bandwidth of 68%, an average high gain of 11.6dBi and symmetric radiation patterns.