Title :
Magnetically tunable stripline Y circulator
Author :
Nagao, T. ; Tanaka, Z.
Author_Institution :
Dept. of Electr. Eng., Nat. Defense Acad., Kanagawa, Japan
Abstract :
A stripline Y-junction circulator loaded with three-YIG-disk tightly coupled (TDC) resonators achieved magnetically tunable operation in UHF. Its frequency band was wider than octave band, 0.4 to 1.1 GHz. Its constituent operation had a frequency band of less than 100 MHz, insertion losses were less than 1.5 dB, and isolation was more than 25 dB. Experimental analysis of the magnetically tunable operation and theoretical analysis of EM fields of resonant modes, eigenvalues, and perfect circulational modes are presented.<>
Keywords :
circulators (microwave); strip line components; tuning; 0.4 to 1.1 GHz; 1.5 dB; 100 MHz; EM fields; UHF; eigenvalues; frequency band; insertion losses; isolation; magnetically tunable operation; perfect circulational modes; resonant modes; stripline Y-junction circulator; three-YIG-disk tightly coupled resonators; Conductors; Eigenvalues and eigenfunctions; Insertion loss; Magnetic analysis; Magnetic field measurement; Magnetic fields; Magnetic resonance; Mutual coupling; Resonant frequency; Stripline;
Conference_Titel :
Microwave Symposium Digest, 1990., IEEE MTT-S International
Conference_Location :
Dallas, TX
DOI :
10.1109/MWSYM.1990.99751
