A Dual-Band Comb-Line Filter Using a Half-Wavelength Stripline Nesting a Quarter-Wavelength Coplanar Waveguide Resonator. - Shoichi Kitazawa; Masahiro Geshiro; Kenta Ishimaru; Masaharu Ohashi; Hideaki Fujimoto; Kouji Wada (IEICE Trans. Commun., 2007)