A Wideband Polarization Reconfigurable Antenna with Partially Reflective Surface

Lu Yang Ji, Pei Yuan Qin, Y. Jay Guo, Can Ding, Guang Fu, Shu Xi Gong

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)

Abstract

A novel partially reflective surface (PRS) antenna is proposed, which can electronically alter its polarization between linear polarization, left-hand circular polarization (CP), and right-hand CP. The antenna consists of a shorted annular patch antenna as the source, a PRS structure to enhance the gain, and a reconfigurable Wilkinson power divider as the feed network. Four p-i-n diodes are inserted into each branch of the power divider to change its electrical length. By switching the p-i-n diodes ON and OFF, a phase difference of 0°, 90°, or -90° can be realized at the two output ports of the feed network, hence enabling the antenna to radiate either a linearly polarized signal or left/right-handed circularly polarized signal. A prototype antenna with the biasing network is designed, fabricated, and measured. Good agreement between the simulated and measured results is achieved. Measurement results show that the proposed antenna has an overlapped 10-dB impedance bandwidth and 3-dB axial-ratio bandwidth of 4.7-5.36 GHz (13.1%). The average realized gains are ∼9 dBi/dBic, which remain reasonably stable for different polarizations. The proposed antenna outperforms most of the reported polarization reconfigurable antennas for its wide bandwidth and relatively high gain.

Original languageEnglish
Article number7518610
Pages (from-to)4534-4538
Number of pages5
JournalIEEE Transactions on Antennas and Propagation
Volume64
Issue number10
DOIs
Publication statusPublished - 1 Oct 2016
Externally publishedYes

Keywords

  • Partially reflective surface (PRS) antenna
  • polarization reconfigurable antenna
  • reconfigurable feed network

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