Implementation of high quality-factor on-chip tuned microwave resonators at 7GHz
Author
Melik, R.
Demir, Hilmi Volkan
Date
2009Source Title
Microwave and optical technology letters
Print ISSN
0895-2477
Electronic ISSN
1098-2760
Publisher
WILEY
Volume
51
Issue
2
Pages
497 - 501
Language
English
Type
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Show full item recordAbstract
We report on the design, analytical modeling, numerical simulation, fabrication, and experimental characterization of chip-scale microwave resonators that exhibit high quality-factors (Q-factors) in the microwave frequency range. We demonstrate high Q-factors by tuning these microwave resonators with the film capacitance of their LC tank circuits rather than the conventional approach of using external capacitors for tuning. Our chip-scale resonator design further minimizes energy losses and reduces the effect of skin depth leading to high Q-factors even for significantly reduced device areas. Using our new design methodology, we observe that despite the higher resonance frequency and smaller chip size, the Q-factor is improved compared with the previous literature using traditional approaches. For our 540 m 540 m resonator chip, we theoretically compute a Q-factor of 52.40 at the calculated resonance frequency of 6.70 GHz and experimentally demonstrate a Q-factor of 47.10 at the measured resonance frequency of 6.97 GHz. We thus achieve optimal design for microwave resonators with the highest Q-factor in the smallest space for operation at 6.97 GHz.