360° Beam-Steering Reconfigurable Wideband Substrate Integrated Waveguide Horn Antenna

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

52 Scopus Citations
View graph of relations



Original languageEnglish
Article number7589992
Pages (from-to)5005-5011
Journal / PublicationIEEE Transactions on Antennas and Propagation
Issue number12
Publication statusPublished - 1 Dec 2016


A novel beam-steering reconfigurable substrate integrated waveguide (SIW) horn antenna is presented. By employing p-i-n diodes as tuning mechanisms, the states of copper posts of the SIW horn can be electronically controlled. Accordingly, the aperture direction of the horn can be switched, and a 360° beam-scanning ability is realized. A pair of bowl-shaped reflectors is introduced for achieving a wide impedance bandwidth and good directional radiation patterns. A fully functional prototype with a 26.2% impedance bandwidth is developed and tested, demonstrating the antenna with a measured gain varying between 8 and 10 dBi and a radiation efficiency of approximately 75% over the impedance band. Moreover, owning to its symmetrical structure, the proposed antenna is capable of steering the radiation beam every 22.5° with identical radiation patterns in the H-plane.

Research Area(s)

  • Beam steering, p-i-n diode, reconfigurable antenna, substrate integrated waveguide (SIW)