In this work, a 0.566THz flat leaky-wave antenna, consisting of a central λ0/2 slot surrounded by straight parallel wedge corrugations, is numerically and experimentally analyzed. Simulations show a moderately high gain and no significant differences when compared with a typical square corrugation profile. Numerical comparison is also made for the designed and manufactured antennas. High transmission enhancement in the corrugated case is obtained, compared to that given by a single central slot with no grooves. This kind of antennas finds several applications in different frequency ranges, including the nowadays high-interest range of the THz.
A high-gain Bull’s-Eye leaky-wave horn antenna
working at 77 GHz with sinusoidal profile has been designed,
fabricated, and experimentally measured. The influence of the
number of periods on the gain and beamwidth is numerically
investigated. Experimental measurements show a high gain of
28.9 dB, with low sidelobe level and a very narrow beamwidth in
good agreement with results obtained from simulations.
