Title :
A modified ring dielectric resonator with improved mode separation and its tunability characteristics in MIC environment
Author :
Srivastava, Kumar Vaibhav ; Mishra, Vishwa V. ; Biswas, Animesh
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol., Kanpur, India
fDate :
6/1/2005 12:00:00 AM
Abstract :
In this paper, a novel dielectric-resonator (DR) structure, called a modified ring resonator, has been proposed. In a microwave integrated-circuit configuration, the ring DR shape is modified in such a way that, for the TE01δ mode, the nearest hybrid (or TM01δ) modes are pushed farther to provide a higher mode separation simultaneous to no deterioration of the Q factor in the mode of interest. Further, the tunability studies reveal that degradation of mode separation in the proposed configuration is much lower than the conventional ring resonator for the tuning range studied here. The configuration also offers versatility in choosing the substrate thickness, which otherwise is limited in a ring resonator.
Keywords :
dielectric resonators; microwave integrated circuits; MIC environment; Q factor; dielectric-resonator structure; microwave integrated-circuit configuration; modified ring resonator; resonator mode separation; ring dielectric resonator; substrate thickness; tunability characteristics; Degradation; Dielectric substrates; Helium; Microwave filters; Microwave integrated circuits; Microwave oscillators; Optical ring resonators; Resonator filters; Shape; Tuning; Dielectric resonator (DR); resonator mode separation; ring resonator; tunability;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2005.848837
