Title :
Input impedance of a circulator with an inphase eigen-excitation resonator
Author :
Akaiwa, Yoshihiko
Author_Institution :
Nippon Electric Co. Ltd., Central Research Laboratories, Kawasaki, Japan
Abstract :
The input impedance of a circulator with an inphase eigen excitation resonator can be expressed by that of a 2-stage bandpass filter. The external Q factor of an inphase eigenexcitation resonator should be three-quarters that of rotational-phase eigen-excitation resonators to obtain a maximally fiat performance.
Keywords :
Q-factor; cavity resonators; circulators (microwave); electrical impedance; excitation; Q factor; cavity resonators; circulators (microwave); electrical impedance; excitation; two stage bandpass filter;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19730199
