3 / 2019-07-07 12:44:35

A New Method For the Realization of Multi-Band Cavity-Backed Antennas

Multi-band antennas,half-mode substrate-integrated waveguide

An effective method of designing low-profile cavity-backed multi-band antennas is introduced based on half-mode substrate-integrated waveguide (HMSIW) technique. By loading U-shaped strips outside the radiating aperture of an HMSIW cavity, additional resonances can be produced, thus leading to the realization of multi-band capability. An inset 50-Ω microstrip feedline is employed to energize the HMSIW cavity, whereas the loaded strips are excited through proximity coupling from the radiating aperture of the HMSIW.