Development of new microwave and millimeter-wave end-coupled band-pass filters using broadside-coupled coplanar waveguides
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This paper reports the development of a new class of end-coupled band-pass filters using broadside-coupled coplanar waveguides (CPWs) suitable for microwave and millimeter-wave integrated circuits. The filters consist of a sequence of CPW broadside-coupled sections periodically located along CPW. Several three-resonator band-pass filters have been developed at X-band (8-12 GHz) and Ka-band (26.5-40 GHz). Good agreement between the theoretical and experimental results has been found.