Magnetically differential inductors and associated methods
First Claim
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1. A circuit formed on an integrated circuit comprising:
- an inductor formed by first and second conductive loops coupled in series with each other; and
wherein the first and second conductive loops are configured such that magnetic field generated by the first conductive loop at least partially cancels the magnetic field generated by the second conductive loop.
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Abstract
A method and apparatus is provided for use in an integrated circuit or printed circuit board for reducing or minimizing interference. An inductance is formed using two or more inductors coupled together and configured such that current flows through the inductors in different directions, thus at least partially canceling magnetic fields. When designing a circuit, the configuration of the inductors, as well as the relative positions of portions of the circuit, can be tweaked to provide optimal interference or noise control.
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Citations
19 Claims
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1. A circuit formed on an integrated circuit comprising:
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an inductor formed by first and second conductive loops coupled in series with each other; and
wherein the first and second conductive loops are configured such that magnetic field generated by the first conductive loop at least partially cancels the magnetic field generated by the second conductive loop. - View Dependent Claims (2, 3, 4, 5)
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6. A method of reducing interference in a circuit formed on an integrated circuit comprising:
forming an inductance using first and second inductors coupled in series, wherein the first and second inductors are arranged such that current flows through first and second inductors in opposite directions to at least partially cancel magnetic fields generated from the first and second inductors. - View Dependent Claims (7, 8, 9, 10)
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11. A method of reducing interference in a circuit formed on an integrated circuit comprising:
forming an inductance using first and second inductors connected in parallel, wherein the first and second inductors are arranged such that current flows through first and second inductors in opposite directions to at least partially cancel magnetic fields generated from the inductors. - View Dependent Claims (12, 13, 14)
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15. A circuit formed on an integrated circuit comprising:
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an inductor formed by first and second conductive loops connected in parallel with each other;
wherein the first and second conductive loops are configured such that magnetic fields generated by the first conductive loop at least partially cancels magnetic fields generated by the second conductive loop. - View Dependent Claims (16, 17, 18, 19)
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Specification