US 6,476,693 B1 · Metal dielectric composite resonator

Abstract

A composite resonator (10) consisting of a conducting metal (14) and a dielectric material (12) is used to provide resonant frequencies lower than can be obtained using the same volume of dielectric alone and with higher unloaded Q than can be obtained using the same volume of metal imbedded into a cavity and used as a resonator. This significantly reduces the cost and size of the resonator (10) without degrading its performance. An inexpensive metal (14), such as aluminum, can be substituted for more than half of the dielectric (12) and stille form a resonator (10) with substantially equivalent resonant properties. The operative embodiments of the resonator invention (1) cover composites with doughnut-shaped, i.e., cylindrical, configurations, with the “doughnut” either metal (14) or dielectric (12), and the “hole” either dielectric (314) or metal (312), respectively.

Claims3

Dependent claims

A resonator apparatus that resonates in a substantially bound mode for use inside of a structure having at least one cavity, said resonator comprising:

a dielectric core having an exterior surface with at least two faces;
a metallic layer covering substantially all of at least one face;
means for producing a disturbance on one said exterior faces of said dielectric core;
wherein said resonator resonates in a substantially bound mode and wherein said resonator resonates at least two peak frequencies and wherein said resonant frequency is below the normal cutoff resonant frequency of said cavity.

1 more element

Dependencies are inferred from the claim text.

Metal dielectric composite resonator

Life of this patent

Metal dielectric composite resonator

Life of this patent

Abstract

Claims3