A Wideband Aperture Coupled Patch Antenna Matched with Non-resonant Mode Based on Folded Substrate Integrated Cavity

A X-Band wideband aperture coupled patch antenna matched with non-resonant mode based on folded substrate integrated cavity is proposed in this paper. This patch antenna is aperture coupled by an H-shape gap exited with a step stripline in folded substrate integrated cavity. The folded substrate integrated cavity is utilized to improve the bandwidth of the patch antenna and disturbance vias are introduced to make sure the antenna is working with non-resonant mode. A phased array base on the proposed antenna is designed and simulated with periodic boundary. The simulated results show that active VSWR of the proposed patch antenna is better than 2.5 and scanning range is more than ±45° at the frequency band of 8-12GHz.