A phased-array antenna apparatus used in a microwave or milliwave band and having a high gain includes a multilayer structure. The multilayer structure is constituted by M radiating elements, M phase shifters, phase shifting control circuits, and a feeding unit. The phase shifters are respectively coupled...http://www.google.de/patents/US6492943?utm_source=gb-gplus-sharePatent US6492943 - Phased-array antenna apparatus
