Compact Smart Antenna with Electronic Beam-Switching and Reconfigurable Polarizations

Chao Gu*, Steven Gao, Haitao Liu, Qi Luo, Tian Hong Loh, Mohammed Sobhy, Jianzhou Li, Gao Wei, Jiadong Xu, Fan Qin, B. Sanz-Izquierdo, Raed A. Abd-Alhameed

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

76 Citations (Scopus)


This paper presents a compact-size, low-cost smart antenna with electronically switchable radiation patterns, and reconfigurable polarizations. This antenna can be dynamically switched to realize three different polarizations including two orthogonal linear polarizations and one diagonally linear polarization. By closely placing several electronically reconfigurable parasitic elements around the driven antenna, the beam switching can be achieved in any of the three polarization states. In this design, a polarization reconfigurable square patch antenna with a simple feeding network is used as the driven element. The parasitic element is composed of a printed dipole with a PIN diode. Using different combinations of PIN diode on/off states, the radiation pattern can be switched toward different directions to cover an angle range of 0° to 360° in the azimuth plane. The concept is confirmed by a series of measurements. This smart antenna has the advantages of compact size, low cost, low power consumption, reconfigurable polarizations, and beams.

Original languageEnglish
Pages (from-to)5325-5333
Number of pages9
JournalIEEE Transactions on Antennas and Propagation
Issue number12
Early online date13 Oct 2015
Publication statusPublished - Dec 2015


  • Beam switching
  • pattern diversity
  • polarization diversity
  • reconfigurable antenna
  • smart antenna

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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