US6867677B2
Expired / Lapsed
US
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On-chip inductive structure
Assignee: Nokia Inc
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Filing: 2002-05-24
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Granted: 2005-03-15
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Expires: 2022-05-24
Abstract
Abstract An on-chip inductive structure, such as the load inductors of a push-pull amplifier, comprises a substrate and first and second inductors connected in series and formed on the substrate. The inductors spiral in opposite sense about a common center in substantially the same plane.
Inventors
- 👤 John Nielson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:27
CPC Classifications
H; H10; H10D; H10D1/00; H10D1/20; H01; H01F; H01F17/00; H01F17/0006; H10D84/00; H10W; H10W20/00; H10W20/40; H10W20/497; H10W44/00; H10W44/20; H01F2017/0046; H10W44/226
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
65 words
A push-pull amplifier including: a substrate; load inductors comprising first and second inductors connected in series at a node and formed on the substrate, the inductors spiralling in opposite senses from side-by-side start positions about a common center in substantially the same plane; a power supply line connected to said node; and first and second output points connected respectively to the first and second inductors.
Claim 2
Dependent Claim
65 words
A push-pull amplifier including: a substrate; load inductors comprising first and second inductors connected in series at a node and formed on the substrate, the inductors spiralling in opposite senses from side-by-side start positions about a common center in substantially the same plane; a power supply line connected to said node; and first and second output points connected respectively to the first and second inductors.
Claim 3
Dependent Claim
26 words
A push-pull amplifier according to claim 1 , wherein the first inductor alternately passes over and under the second inductor as it spirals about said center.
Claim 4
Dependent Claim
28 words
A push-pull amplifier according to claim 2 , wherein the first inductor passes under the second inductor in a trough formed in a dielectric layer on the substrate.
Claim 5
Dependent Claim
32 words
A push-pull amplifier according to claim 2 , wherein the spiralling in of the inductors is caused by inward path transitions where the first inductor passes over or under the second inductor.
Claim 6
Dependent Claim
16 words
A push-pull amplifier according to claim 1 , wherein the turns of inductors are substantially rectangular.
Claim 7
Dependent Claim
14 words
A push-pull amplifier according to claim 5 , wherein said turns are substantially square.
Claim 8
Dependent Claim
26 words
A push-pull amplifier according to claim 1 , exhibiting at least one degree of mirror symmetry, to a substantial extent, along a line in said plane.
Claim 9
Dependent Claim
23 words
A push-pull amplifier according to claim 1 , including output signal paths following peripheral routes around the respective halves of the load inductors.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-03-14 | 2008-09-13 | 2009-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-03-14 | 2012-09-13 | 2013-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-03-14 | 2016-09-13 | 2017-03-15 | $7700.00 | Window Closed / Lapsed |