Title :
Recent advances in bandwidth and isolation enhancement for VHF-UHF lumped-element circulators
Author :
Young, Jeffrey L. ; Hang Dong
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Idaho, Moscow, ID, USA
Abstract :
Recent work on passive and active circulators for the VHF and UHF bands is described herein. Attention is given to both the optimization problem for enhanced bandwidth or isolation performance and to simulation and measurement data. For example, a passive circulator is described that has 15 dB isolation for frequencies in the 52-79 MHz band. Another passive circulator is described that has over 30 dB of isolation for frequencies in the 260-390 MHz band.
Keywords :
UHF circuits; VHF devices; circulators; lumped parameter networks; UHF bands; VHF bands; VHF-UHF lumped-element circulators; active circulators; bandwidth 260 MHz to 390 MHz; bandwidth 52 MHz to 79 MHz; bandwidth performance enhancement; isolation performance enhancement; loss 30 dB; optimization problem; passive circulators; Attenuators; Bandwidth; Circulators; Gain; Insertion loss; Loss measurement; Optimization;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications (MAPE), 2013 IEEE 5th International Symposium on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4673-6077-7
DOI :
10.1109/MAPE.2013.6689923
