A Millimeter-Wave Aperture Coupled High-Gain Antenna Array

An aperture coupled high gain micro-strip antenna for V-band is designed in this paper. It consists of two substrates with slot cut in the ground between two substrate and patch at the top and feed line at the bottom of other substrate. Power is coupled from feed line through slotted ground to the patch. Simulation and measurement results shows very good agreement for impedance matching and wide band gain. This antenna gives good matched results for 57 GHz to 64 GHz below −10 dB and gain of maximum 24 to 26 dBi in simulation and 22 to 28 dBi in measurement. Simulated result shows good cross polarization level of more than 35 dB.