Takashi Shimizu Yuki Kawahara Takayuki Nakagawa Tsukasa Yoneyama A Waveguide Compatible NRD Guide E-Plane Bandpass Filter for 55 GHz Band OFDM Applications. 1729-1735 2007 90-C IEICE Transactions 9 http://dx.doi.org/10.1093/ietele/e90-c.9.1729 db/journals/ieicet/ieicet90c.html#ShimizuKNY07