Wave transmission lines and networks – Resonators – Coaxial or shielded
Reexamination Certificate
2007-05-29
2007-05-29
Pascal, Robert (Department: 2817)
Wave transmission lines and networks
Resonators
Coaxial or shielded
C333S224000, C333S226000, C333S231000, C333S234000
Reexamination Certificate
active
10911574
ABSTRACT:
A high Q RF cavity resonator loaded with a ceramic disc, the resonator comprising an inner conductive post having a length less than a quarter wavelength. The resonance frequency of the resonator is tunable by changing a distance between a) an outer plate and b) a ceramic disc and an end cap where the ceramic disc is located between the outer plate and the end cap. The resonance frequency can be tuned when the outer plate, ceramic disc, and end cap are in contact with each other by varying a pressure between the contact surfaces of the ceramic disc, the end cap and the outer plate. Temperature compensation allows the resonator to hold a resonance frequency despite changes in temperature, and can be achieved by selecting thermal coefficients of expansion of components holding or placing the ceramic disc and end cap relative to the outer plate.
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Designing Short High Q Resonators, Dale D. Henkes, ACS, Mlcrowaves & RF, Dec. 2003, 7 pages.
Buchanan & Ingersoll & Rooney PC
Glenn Kimberly E
Pascal Robert
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