Tunable filter utilizing a conductive grid
First Claim
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1. A tunable filter, comprising:
- a) a first resonator;
b) a second resonator; and
,c) a conductive grid assembly electrically coupled to said first and second resonators and coupled to ground, said conductive grid assembly for altering the coupling between said first and second resonators.
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Abstract
A tunable filter includes a first resonator; a second resonator; and, a conductive grid assembly electrically coupled to the first and second resonators and coupled to ground. The conductive grid assembly alters the coupling between the first and second resonators. The conductive grid assembly preferably includes a conductive grid element electrically coupled to the first and second resonators; and, a ground coupling element connected between the conductive grid element and ground for altering the coupling between the conductive grid element and ground.
17 Citations
18 Claims
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1. A tunable filter, comprising:
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a) a first resonator; b) a second resonator; and
,c) a conductive grid assembly electrically coupled to said first and second resonators and coupled to ground, said conductive grid assembly for altering the coupling between said first and second resonators. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A tunable filter, comprising:
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a) a first resonator; b) a second resonator; and
,c) a conductive grid assembly electrically coupled to said first and second resonators and coupled to ground, said conductive grid assembly, comprising; i. a conductive grid element electrically coupled to said first and second resonators, said conductive grid assembly, comprising; 1. conductive section, and; 2. a plurality of dielectric sections adjacent to said conductive section and arranged in a grid pattern; and
,ii. a ground coupling element connected between said conductive grid element and ground for altering the coupling between said conductive grid element and ground, said ground coupling element comprising an inductor connected to a variable voltage supply, wherein said conductive grid assembly alters the coupling between said first and second resonators.
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18. A method for actively tuning a filter, comprising the steps of:
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a) providing a first resonator; b) providing a second resonator; c) electrically coupling said first and second resonators utilizing a conductive grid assembly coupled to ground; and
,d) utilizing said conductive grid assembly for altering the coupling between said first and second resonators.
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Specification