Review of reconfigurable substrate-integrated-waveguide antennas

Abstract

Reconfigurable substrate-integrated waveguide (SIW) technology is considered to be promising for the development of antennas operating in the microwave and millimeter wavebands. The main aim of this study is to summarize and compare recent advances regarding the technical operation of reconfigurable SIW antennas and the construction of their various topologies, namely half-mode SIW (HMSIW), quarter-mode SIW, and eighth-mode SIW, with respect to the tunable frequency, radiation pattern, and polarization. The classic development of SIW components is concisely described, and a comparative analysis of the simulation results for the different SIW topologies is also presented, focusing on how SIW antennas are reconfigured as per system needs.