Title :
Design of compact microstrip diplexer with high selectivity
Author :
Velidi, Vamsi Krishna ; Prabhakaran, U. ; Subramanyam, A.V.G. ; Sivareddy, D. ; Srinivasan, V.V.
Author_Institution :
Antenna & Passive Syst. Div., ISRO Satellite Centre, Bangalore, India
Abstract :
A novel design of compact microstrip diplexer, using coupled dual-mode open-loop resonators, is proposed. The main advantage in using dual-mode open-loop resonators is that a compact narrowband bandpass filter with high selective asymmetrical frequency response is easily realized. This property is explored to design diplexer for a system with two extremely close bands. A prototype diplexer operating in the 2.07/2.3 GHz band, having compact size (44 mm × 11 mm) and high isolation (>;-40 dB), is designed for demonstration.
Keywords :
UHF filters; UHF resonators; band-pass filters; microstrip filters; microstrip resonators; multiplexing equipment; asymmetrical frequency response; compact microstrip diplexer; compact narrowband bandpass filter; coupled dual-mode open-loop resonators; frequency 2.07 GHz; frequency 2.3 GHz; Band pass filters; Filtering theory; Microstrip filters; Microstrip resonators; Resonant frequency; Resonator filters; Bandpass filter; diplexer; dualmode; open-loop resonator;
Conference_Titel :
Signal Processing and Communications (SPCOM), 2012 International Conference on
Conference_Location :
Bangalore
Print_ISBN :
978-1-4673-2013-9
DOI :
10.1109/SPCOM.2012.6290012
