Title :
Dual-Band Tunable Recursive Active Filter
Author :
Segovia-Vargas, Daniel ; García-Pérez, Óscar ; González-Posadas, Vicente ; Aznar-Ballesta, Francisco
Author_Institution :
Dept. of Signal Theor. & Commun., Univ. Carlos III de Madrid, Leganes, Spain
Abstract :
This letter presents a novel recursive active filter topology that provides dual-band performance, with independent tuning capability in both bands. The dual-band operation is achieved by using two independent feedback lines. Additionally, linear phase shifters based on left-handed cells are included in these two branches in order to tune the center frequency of both pass bands.
Keywords :
active filters; network topology; phase shifters; recursive filters; dual-band tunable recursive active filter; feedback lines; left-handed cells; linear phase shifters; recursive active filter topology; Dual band; Gain; Noise; Phase shifters; Topology; Tuning; Voltage control; Active filters; dual-band circuits; left handed (LH) transmission lines; tunable filters;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2010.2099649
