Feed line optimization in pseudo-interdigital bandpass filters

Abstract

To demonstrate the importan topology in the design of filter with coupled res interdigital bandpass filter is designed here. In approach the feedlines are of coupled type w designed over a substrate of RT/Duroid ( r = when the filter is designed over FR4 ( r = 4 coupled feed lines are unable to produce t response. To comply with the filter prototypes structure is then implemented to produce the Therefore it may be deduced that feedline layo of choice but an inevitable design requirement. A procedure and measured/simulated results are p