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Wideband Loop Antenna with Electronically Switchable Circular Polarization

Zhang, Long, Gao, Steven, Luo, Qi, Young, Paul R., Li, Qingxia (2016) Wideband Loop Antenna with Electronically Switchable Circular Polarization. IEEE Antennas and Wireless Propagation Letters, 16 . pp. 242-245. ISSN 1536-1225. E-ISSN 1548-5757. (doi:10.1109/LAWP.2016.2570859) (KAR id:55782)

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This paper presents a novel printed antenna with wide bandwidth, high gain and reconfigurable circular polarizations. A loop antenna is printed on both sides of a dielectric substrate: a dual PIN diode loaded loop is printed on one side while a dual gap loaded smaller loop is printed on the other side. By controlling the ON/OFF states of the PIN diodes, the polarization of the proposed antenna can be switched electronically to right-hand circular polarization (RHCP) or left-hand circular polarization (LHCP) over a wideband frequency range. A prototype is fabricated and measured to verify the performance of the antenna. The measured results indicate that the antenna achieves an impedance bandwidth of over 30%, and a 3-dB axial ratio (AR) bandwidth of 12.7% and 14.9% for RHCP and LHCP, respectively. The measured gain is around 8 dBic for LHCP state and 7 dBic for RHCP state. Due to advantages of wide overlapped bandwidth, simple feeding structure and high gain, this antenna is promising for applications in dual-CP wireless communication systems.

Item Type: Article
DOI/Identification number: 10.1109/LAWP.2016.2570859
Subjects: T Technology
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Tina Thompson
Date Deposited: 02 Jun 2016 14:21 UTC
Last Modified: 16 Feb 2021 13:35 UTC
Resource URI: (The current URI for this page, for reference purposes)
Gao, Steven:
Young, Paul R.:
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