Bandwidth enhancement and further size reduction of a class of miniaturized elliptic-function low-pass filter

Abstract

In this chapter, a new model for further reducing the size and increasing the bandwidth (BW) of a class miniaturized elliptic-function low-pass filter is presented. A compact elliptic-function low-pass filter using microstrip stepped-impedance semi-hairpin resonators is also developed and then, a multiple cascaded filter using semi-hairpin resonators is designed by this technique. The overall bandwidth (BW) of the proposed low-pass filter is reported to be increased by more than 40% with a size reduction about 80% compared with the conventional ones. © Springer Science+Business Media, LLC 2010.