초록 ▼

A simplified apparatus and a design method for providing microwave resonators having high Q factors. The apparatus includes a resonant microwave cavity having three mutually orthogonal dimensions and a low loss dielectric body substantially enclosing each dimension of the resonant microwave cavity.

A simplified apparatus and a design method for providing microwave resonators having high Q factors. The apparatus includes a resonant microwave cavity having three mutually orthogonal dimensions and a low loss dielectric body substantially enclosing each dimension of the resonant microwave cavity. To further increase Q-factor, the apparatus of the invention preferably includes a plurality of resonant microwave cavities and a plurality of low loss dielectric bodies each substantially enclosing a respective one of the microwave resonant cavities. In some embodiments the low loss dielectric bodies are arranged in a stack. In other embodiments the low loss dielectric bodies are concentrically arranged. The design method includes selecting a resonant mode frequency and a height dimension of a microwave resonant cavity, extending radial bessel function solutions along a radius of the cavity to determine radial locations of electric field nulls of a resonant mode of microwaves, and substantially positioning concentric dielectric tube portions of the bodies at the radial locations of the electric field nulls. Similarly, the method of the invention includes extending cavity harmonic function solutions along the axis of symmetry of the cavity to determine axial locations of electric field nulls of the resonant mode of microwaves, and substantially positioning dielectric plate portions of the bodies at the axial locations of the electric field nulls.

대표청구항 ▼

[ What is claimed is:] [15.] An apparatus comprising:a plurality of resonant microwave cavities; anda low loss dielectric body enclosing each of the microwave resonant cavities; rein:the low loss dielectric body has a plurality of inner surfaces;the plurality of resonant microwave cavities support a

[ What is claimed is:] [15.] An apparatus comprising:a plurality of resonant microwave cavities; anda low loss dielectric body enclosing each of the microwave resonant cavities; rein:the low loss dielectric body has a plurality of inner surfaces;the plurality of resonant microwave cavities support a resonant mode of microwaves having modal electric field nulls;the inner surfaces of the low loss dielectric body are disposed proximate to locations of the modal electric field nulls.