Design of a high gain microstrip antenna array at Ku-band

Abstract

Aperture coupling feed and double-layer microstrip patch structure are applied to design microstrip antenna element, 64 elements and 256 elements microstrip antenna array. Parallel feed and T-junction type power divider are used to design antenna array. The measured results of subarray antennas show that the operational bandwidth (VSWR ≤ 1.5) is 1.32GHz and the gain is not less than 24dB which is accorded with the simulated results. The measured radiation patterns of 64 elements and 256 elements antenna arrays are presented.