Date Added: Dec 2011
Band pass filters are important components for RF/microwave systems providing a low insertion loss within the pass band and a large attenuation in the stop band. Recently; broadband band pass filters have drawn a lot of attention. The design of broadband microwave filter consisting of parallel-coupled lines usually has the realization problem of very narrow coupled-line gaps. In recent years, solutions especially related to broadband filter implementations have been studied in several literatures. In this paper, the authors proposed chipless RFID multi-resonators, fabricated with accurate attenuation and complete until fill until complete mechanism. In AAFCM technique they assume the conductive material is filled into a mould with predefined dimensions.