Takashi Shimizu Tsukasa Yoneyama A NRD Guide Fed Dielectric Lens Antenna with High Gain and Low Sidelobe Characteristics. 1385-1386 2005 88-C IEICE Transactions 7 http://dx.doi.org/10.1093/ietele/e88-c.7.1385 db/journals/ieicet/ieicet88c.html#ShimizuY05