Title :
A Wide-Band, High Isolation UHF Lumped-Element Ferrite Circulator
Author :
Hang Dong ; Smith, J.R. ; Young, Jeffrey L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Idaho, Moscow, ID, USA
Abstract :
A novel, spiral trace topology for a lumped-element, ferrite circulator is demonstrated in this letter. By employing this new topology, along with various optimization methods, we achieve high isolation and wide bandwidth for UHF applications. Based on simulation data, circulator isolation of 30 dB or more is possible over the 245-355 MHz frequency range. The isolation response of a fabricated spiral trace circulator exceeds 30 dB, but over a shifted and wider frequency range of 260 to 390 MHz.
Keywords :
UHF devices; ferrite circulators; microwave circulators; circulator isolation; fabricated spiral trace circulator; frequency 245 MHz to 355 MHz; frequency 260 MHz to 390 MHz; high isolation UHF lumped-element ferrite circulator; optimization methods; spiral trace topology; wide-band UHF lumped-element ferrite circulator; Bandwidth; circulation impedance; isolation; lumped-element circulator;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2013.2258004
