Time delay filters
First Claim
Patent Images
1. A time delay filter comprising:
- a substrate comprising a conductive ground region;
a first LC resonator coupled to the substrate and comprising;
a first coupling point,a first capacitive element electrically coupled between the first coupling point and the ground region, anda first inductive element electrically coupled between the first coupling point and the ground region;
a second LC resonator coupled to the substrate and comprising;
a second coupling point,a second capacitive element electrically coupled between the second coupling point and the ground region, anda second inductive element electrically coupled between the second coupling point and the ground region;
a third LC resonator coupled to the substrate and comprising;
a third coupling point,a third capacitive element electrically coupled between the third coupling point and the ground region, anda third inductive element electrically coupled between the third coupling point and the ground region;
a fourth LC resonator coupled to the substrate and comprising;
a fourth coupling point,a fourth capacitive element electrically coupled between the fourth coupling point and the ground region, anda fourth inductive element electrically coupled between the fourth coupling point and the ground region;
a first capacitor that electrically couples the first coupling point to the second coupling point;
a second capacitor that electrically couples the second coupling point to the third coupling point; and
a third capacitor that electrically couples the third coupling point to the fourth coupling point;
wherein the filter group delays a signal output at the fourth coupling point relative to a signal input at the first coupling point;
wherein the substrate comprises a first surface, a second surface substantially parallel to the first surface, and a volume between the first and second surfaces;
wherein the first, second, third, and fourth capacitive elements are buried capacitors within the substrate volume;
wherein the first, second, and third capacitors are surface capacitors on the first surface of the substrate;
wherein first and second sides of the first capacitive element are separated by a dielectric layer of the substrate, wherein the dielectric layer comprises hafnium oxide.
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Abstract
A time delay filter comprising a substrate; four coupled LC resonators, each having a coupling point; a first capacitor that electrically couples the first coupling point to the second coupling point; a second capacitor that electrically couples the second coupling point to the third coupling point; and a third capacitor that electrically couples the third coupling point to the fourth coupling point; the filter group delaying a signal output at the fourth coupling point relative to a signal input at the first coupling point.
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Citations
14 Claims
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1. A time delay filter comprising:
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a substrate comprising a conductive ground region; a first LC resonator coupled to the substrate and comprising; a first coupling point, a first capacitive element electrically coupled between the first coupling point and the ground region, and a first inductive element electrically coupled between the first coupling point and the ground region; a second LC resonator coupled to the substrate and comprising; a second coupling point, a second capacitive element electrically coupled between the second coupling point and the ground region, and a second inductive element electrically coupled between the second coupling point and the ground region; a third LC resonator coupled to the substrate and comprising; a third coupling point, a third capacitive element electrically coupled between the third coupling point and the ground region, and a third inductive element electrically coupled between the third coupling point and the ground region; a fourth LC resonator coupled to the substrate and comprising; a fourth coupling point, a fourth capacitive element electrically coupled between the fourth coupling point and the ground region, and a fourth inductive element electrically coupled between the fourth coupling point and the ground region; a first capacitor that electrically couples the first coupling point to the second coupling point; a second capacitor that electrically couples the second coupling point to the third coupling point; and a third capacitor that electrically couples the third coupling point to the fourth coupling point; wherein the filter group delays a signal output at the fourth coupling point relative to a signal input at the first coupling point;
wherein the substrate comprises a first surface, a second surface substantially parallel to the first surface, and a volume between the first and second surfaces;
wherein the first, second, third, and fourth capacitive elements are buried capacitors within the substrate volume;
wherein the first, second, and third capacitors are surface capacitors on the first surface of the substrate;
wherein first and second sides of the first capacitive element are separated by a dielectric layer of the substrate, wherein the dielectric layer comprises hafnium oxide.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
wherein the first conductive region, the first via, the second conductive region, the second via, the first capacitive element, and the third via form a loop.
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11. A time delay filter comprising:
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a substrate comprising a conductive ground region; a first LC resonator coupled to the substrate and comprising; a first coupling point, a first capacitive element electrically coupled between the first coupling point and the ground region, and a first inductive element electrically coupled between the first coupling point and the ground region; a second LC resonator coupled to the substrate and comprising; a second coupling point, a second capacitive element electrically coupled between the second coupling point and the ground region, and a second inductive element electrically coupled between the second coupling point and the ground region; a third LC resonator coupled to the substrate and comprising; a third coupling point, a third capacitive element electrically coupled between the third coupling point and the ground region, and a third inductive element electrically coupled between the third coupling point and the ground region; a fourth LC resonator coupled to the substrate and comprising; a fourth coupling point, a fourth capacitive element electrically coupled between the fourth coupling point and the ground region, and a fourth inductive element electrically coupled between the fourth coupling point and the ground region; a fifth LC resonator coupled to the substrate and comprising; a fifth coupling point, a fifth capacitive element electrically coupled between the fifth coupling point and the ground region, and a fifth inductive element electrically coupled between the fifth coupling point and the ground region; a sixth LC resonator coupled to the substrate and comprising; a sixth coupling point, a sixth capacitive element electrically coupled between the sixth coupling point and the ground region, and a sixth inductive element electrically coupled between the sixth coupling point and the ground region a first capacitor that electrically couples the first coupling point to the second coupling point; a second capacitor that electrically couples the second coupling point to the third coupling point; and a third capacitor that electrically couples the third coupling point to the fourth coupling point; a fourth capacitor that electrically couples the fourth coupling point to the fifth coupling point; and a fifth capacitor that electrically couples the fifth coupling point to the sixth coupling point; wherein the filter group delays a signal output at the sixth coupling point relative to a signal input at the first coupling point;
wherein the first, second, third, fourth, fifth, and sixth LC resonators are arranged on the substrate in a horseshoe pattern;
wherein the substrate comprises a first surface, a second surface substantially parallel to the first surface, and a volume between the first and second surfaces;
wherein the first, second, third, fourth, fifth, and sixth capacitive elements are buried capacitors within the substrate volume;
wherein the first, second, third, fourth, and fifth capacitors are surface capacitors on the first surface of the substrate;
wherein first and second sides of the first capacitive element are separated by a dielectric layer of the substrate, wherein the dielectric layer comprises hafnium oxide.- View Dependent Claims (12, 13, 14)
wherein the first conductive region, the first via, the second conductive region, the second via, the first capacitive element, and the third via form a loop.
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Specification