Researchers

SAMER KOUKOU, KHALED YAZBEK, ZEIDOUN MOUZAHEM

Published in

WSEAS TRANSACTIONS on ELECTRONICS, Vol. 10, 2019

Abstract

A compact fifth-order quasi-elliptic band-pass filter (BPF) based on Hexagonal Open-Loop Resonators (HOLRs) with capacitive loading is presented in this paper. A capacitive loading is used to reduce  size and to obtain more compactness and sharp rejection, as well as spurious shift towards higher frequencies. The filter has been designed to operate at a center frequency of 2.45 GHz for wireless applications and Network systems operating in ISM band. The stopband rejection of the upper band extends to 6.62 GHz with a value
greater than 32 dB. Furthermore, there are two transmission zeros at 2.02 and 2.62 GHz for a sharp cutoff response. The roll-off rates are 346 dB/GHz and 323 dB/GHz at lower and upper stopbands, respectively. The miniaturization technique using capacitive loading has led to 27% reduction in filter dimensions.
Key-Words: - Open-loop hexagonal resonator; band-pass filter; capacitive coupling; miniaturization

Link to read full paper

http://www.wseas.org/multimedia/journals/electronics/2019/a185117-111.pdf