Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Reexamination Certificate
2005-02-22
2005-02-22
Pascal, Robert (Department: 2817)
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
C333S222000, C333S202000, C331S101000
Reexamination Certificate
active
06859118
ABSTRACT:
A system and method for a novel microwave coaxial resonator oscillator using a ⅝ths wavelength resonator is described. The novel system and method provides a coaxial resonator for operation at high frequencies comprising a conductive resonator and a coaxial conductive outer shell electrically connected by an conductive end member, wherein the conductive resonator and outer shell are of a length approximately equal to (1/8+n/2) of the wavelength of the desired frequency, where n is a positive integer. The novel system and method provides a low noise oscillator for operation at high frequencies and reduces oscillator phase noise in high Q implementations.The novel system and method also provides for reducing the aspect ratio of a 1/8 wavelength coaxial resonator by increasing in a stepwise manner the length of the coaxial resonator by n/2 wavelengths of the resonator frequency, where n is a positive integer. Furthermore, the novel system and method provides for reducing higher order modes in a 1/m wavelength coaxial resonator, operating at a high frequency, by increasing in a stepwise manner the length of the 1/m wavelength coaxial resonator by n/2 wavelengths of the resonator frequency, where n and m are positive integers.
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Chang Joseph
Duane Morris LLP
Harris Corporation
Pascal Robert
LandOfFree
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