Filter with dielectric resonators
First Claim
Patent Images
1. A dielectric resonator filter comprising:
- a single flat base plate at least a surface of which is made of metal;
a plurality of dielectric resonators arranged in an array on said surface made of metal at predetermined intervals;
a pair of input/output coupling members each formed of a bent thin sheet and arranged on said surface made of metal to face those of said dielectric resonators which are located at opposite ends of said array, said input/output coupling members being mounted such that a surface thereof which electromagnetically couples with a dielectric resonator is perpendicular to said flat base plate; and
a cover mounted to said base plate and formed with a channel which constitutes a cutoff waveguide, said dielectric resonators and input/output coupling members being disposed in said channel.
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Abstract
A dielectric resonator filter applicable to any desired frequency which is required with a microwave band or a millimeter wave band communication apparatus is disclosed. A single base plate made of metal carries therewith a single or a plurality of dielectric resonators, a pair of input/output coupling members, and a pair of input/output connectors all of which are arranged directly on the base plate in a planar configuration. This base plate subassembly is shielded by a cover having a recess in a sectional view which serves as a cutoff range waveguide.
44 Citations
11 Claims
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1. A dielectric resonator filter comprising:
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a single flat base plate at least a surface of which is made of metal; a plurality of dielectric resonators arranged in an array on said surface made of metal at predetermined intervals; a pair of input/output coupling members each formed of a bent thin sheet and arranged on said surface made of metal to face those of said dielectric resonators which are located at opposite ends of said array, said input/output coupling members being mounted such that a surface thereof which electromagnetically couples with a dielectric resonator is perpendicular to said flat base plate; and a cover mounted to said base plate and formed with a channel which constitutes a cutoff waveguide, said dielectric resonators and input/output coupling members being disposed in said channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A dielectric resonator filter comprising:
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a single flat base plate at least a surface of which is made of metal; a plurality of dielectric resonators arranged in an array on said surface made of metal at predetermined intervals;
a pair of input/output coupling members each formed of a bent thin sheet and arranged on said surface made of metal to face those of said dielectric resonators which are located at opposite ends of said array, said input/output coupling members being mounted such that a surface thereof which electromagnetically couples with the dielectric resonator is perpendicular to said flat base plate; anda cover mounted to said base plate and formed with a channel which constitutes a cutoff waveguide, said dielectric resonators and input/output coupling members being disposed in said channel; wherein each of said dielectric resonators is held by a support member having a small tan δ
value and which is connected to said surface which is made of metal. - View Dependent Claims (10, 11)
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Specification