Journal
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
Volume 21, Issue 5, Pages 237-239Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2011.2126565
Keywords
Microelectromechanical system (MEMS) tunable resonators; microwave cavities; RF-MEMS
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Funding
- Agence Nationale Recherche (ANR)
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This paper presents a 14 GHz high-Q (quality factor) tunable resonator using microelectromechanical system (MEMS) varactors. A brass surface mountable cavity has been bonded on a fused silica wafer on which are processed three 1.1 mm long MEMS varactors. Their location has been optimized in order to obtain a wide frequency shift, when the cantilevers are actuated on the substrate. 15% tuning range from 11.9 GHz to 14.2 GHz has been obtained with a continuous shift from 11.9 GHz to 13.6 GHz. Measurements result in an average unloaded quality factor (Q(u)) of 480 over the operating frequency band.
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