"Hiromitsu Uchida,Kazutomo Suzuki,Yoshihiko Konishi,Shigeru Makino,Jiro Hirokawa,Makoto Ando","AN ELLIPTIC-FUNCTION LOW-PASS FILTER WITH A RING-RESONATOR","INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP2005)",,,"Vol. 2",,"pp. 865-868",2005,Aug.