Dielectric biasing circuit for transformers and inductors
First Claim
1. An alternating current (AC) transformer comprising:
- a plurality of input nodes;
a plurality of output nodes, wherein the transformer is configured to receive an input AC electrical signal at the plurality of input nodes and supply an output AC electrical signal at the plurality of output nodes;
a core;
a plurality of windings wound on the core and arranged between the plurality of input nodes and plurality of output nodes, the plurality of windings defining an AC signal path to transform the input AC electrical signal into the output AC electrical signal along the AC signal path, the plurality of input nodes being coupled to a first winding of the plurality of windings and the plurality of output nodes being coupled to a second winding of the plurality of windings;
a first faraday screen disposed between the core and the second winding, the first faraday screen being coupled to a first bias direct current (DC) voltage; and
a second faraday screen disposed between the first faraday screen and the core, the second faraday screen being coupled to a return path of the first bias DC voltage,wherein the first and second faraday screens form a DC electrostatic field independent of the AC signal path, the DC electrostatic field being formed based on a potential difference between the first and second faraday screens, wherein the first and second faraday screens are disposed between the first and second windings for biasing capacitive elements associated with the plurality of windings using the formed DC electrostatic field.
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Accused Products
Abstract
A transformer is configured to receive an input electrical signal at input nodes and supply an output electrical signal at output nodes. The transformer includes windings wound on the core between the input and output nodes. The windings define a signal path to transform the input electrical signal into the output electrical signal along the signal path. The transformer includes a first insulated conductive layer arranged between first and second windings configured to receive a first bias voltage. The transformer includes a second insulated conductive layer arranged spatially proximate to the first and second windings configured to receive a second bias voltage. The first and second insulated conductive layers form an electrostatic field that is based on a potential difference between the first and second bias voltages independent of the signal path. The windings are arranged to be within the formed electrostatic field.
11 Citations
22 Claims
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1. An alternating current (AC) transformer comprising:
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a plurality of input nodes; a plurality of output nodes, wherein the transformer is configured to receive an input AC electrical signal at the plurality of input nodes and supply an output AC electrical signal at the plurality of output nodes; a core; a plurality of windings wound on the core and arranged between the plurality of input nodes and plurality of output nodes, the plurality of windings defining an AC signal path to transform the input AC electrical signal into the output AC electrical signal along the AC signal path, the plurality of input nodes being coupled to a first winding of the plurality of windings and the plurality of output nodes being coupled to a second winding of the plurality of windings; a first faraday screen disposed between the core and the second winding, the first faraday screen being coupled to a first bias direct current (DC) voltage; and a second faraday screen disposed between the first faraday screen and the core, the second faraday screen being coupled to a return path of the first bias DC voltage, wherein the first and second faraday screens form a DC electrostatic field independent of the AC signal path, the DC electrostatic field being formed based on a potential difference between the first and second faraday screens, wherein the first and second faraday screens are disposed between the first and second windings for biasing capacitive elements associated with the plurality of windings using the formed DC electrostatic field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An alternating current (AC) inductive device comprising
an input node; -
an output node, wherein the inductive device is configured to receive an input AC electrical signal at the input node and supply an output AC electrical signal at the output node; a core; a winding wound on the core defining an AC signal path to communicate the output AC electrical signal based on the input AC electrical signal along the AC signal path; and a faraday screen disposed on the core, the faraday screen being coupled to a first direct current (DC) voltage to form a DC electrostatic field independent of the AC signal path, the DC electrostatic field being formed based on a potential difference between the faraday screen and the core, the core being coupled to a return path of the first DC voltage, wherein the faraday screen is disposed between the winding and the core for biasing capacitive elements associated with the winding using the formed DC electrostatic field. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification