A plurality of antenna end-fire antenna feed elements disposed along a contour on a dielectric substrate cooperate with a discrete lens array. An electromagnetic wave launched by an antenna feed element is received by a first set of patch antennas on a first side of the discrete lens array, and the associated...http://www.google.com.tw/patents/US7358913?utm_source=gb-gplus-share專利 US7358913 - Multi-beam antenna
