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

Lei Ge; Kwai Man Luk; Shichang Chen

doi:10.1109/TAP.2016.2617820

Author(s)

Lei Ge
Kwai Man Luk
Shichang Chen

Related Research Unit(s)

State Key Laboratory of Terahertz and Millimeter Waves (City University of Hong Kong)

Detail(s)

Original language	English
Article number	7589992
Pages (from-to)	5005-5011
Journal / Publication	IEEE Transactions on Antennas and Propagation
Volume	64
Issue number	12
Publication status	Published - 1 Dec 2016

Link(s)

DOI	DOI https://doi.org/10.1109/TAP.2016.2617820 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85006168107&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(a704d8df-187f-4714-b076-237bc35458e1).html

Abstract

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.