Title :
Design of microstrip resonators using balanced and unbalanced composite right/left-handed transmission lines
Author :
Allen, Catherine A. ; Leong, Kevin M K H ; Itoh, Tatsuo
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
fDate :
7/1/2006 12:00:00 AM
Abstract :
Balanced and unbalanced composite right/left-handed transmission lines are used in the design of resonators. The balanced resonator is designed by changing the nonlinear phase response in order to control the spacing between modes and the Q factor. Two balanced ring resonators are measured and one demonstrates increased mode spacing/decreased Q factor and the other demonstrates decreased mode spacing/increased loaded Q factor. The unbalanced resonator is designed by changing the nonlinear phase response and magnitude response. A measured unbalanced ring resonator shows increased mode spacing with a reasonable Q factor. A microstrip line resonator is measured to demonstrate higher frequency capabilities.
Keywords :
Q-factor; high-frequency transmission lines; metamaterials; microstrip resonators; Q factor; balanced resonator; left-handed transmission lines; magnitude response; metamaterials; microstrip resonators; mode spacing; nonlinear phase response; right-handed transmission lines; ring resonators; transmission-line resonator; Band pass filters; Couplings; Frequency; Geometry; Microstrip resonators; Optical ring resonators; Oscillators; Permittivity; Resonator filters; Transmission lines; Metamaterials; microstrip resonators; transmission-line resonators;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2006.877048
