The 40GHz band duplexer with E-plane planar circuit. - Toshihisa Kamei; Yozo Utsumi; Nguyen Thanh (IEICE Electron. Express, 2007)

Wide-Band Coaxial-to-Coplanar Transition. - Toshihisa Kamei; Yozo Utsumi; Nguyen Quoc Dinh; Nguyen Thanh (IEICE Trans. Electron., 2007)

Design of Microstrip Bandpass Filters Using SIRs with Even-Mode Harmonics Suppression for Cellular Systems. - Somboon Theerawisitpong; Toshitatsu Suzuki; Noboru Morita; Yozo Utsumi (IEICE Trans. Electron., 2010)