Patent US5892425A successfully refreshed from Google Patents.
US5892425A
Expired / Lapsed
US
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Interwound center-tapped spiral inductor
Assignee: Virginia Tech Intellectual Properties Inc
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Filing: 1997-04-10
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Granted: 1999-04-06
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Expires: 2017-04-10
Abstract
Abstract An inter-wound spiral center tapped inductor includes a first and second spiral inductor trace arranged in a plane in an inter-nested pattern with a center tap connection. The inter-wound traces implement the two halves of a center-tapped inductor over a common area to provide a practical inductor element for use in balanced and differential circuits.
Inventors
- 👤 William B. Kuhn
- 👤 Aicha-Elshabini Riad
- 👤 William F. Stephenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:43
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/45; H03F3/45071; H03F3/45076; H03F3/45179; H03F3/45183; H01; H01F; H01F17/00; H01F17/0006; H01F21/00; H01F21/12; H01F2021/125; H03F2203/00; H03F2203/45; H03F2203/45638; H03F2203/45652; H05; H05K; H05K1/00; H05K1/16; H05K1/165
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
149 words
An inductor comprising: a mounting structure having means for mounting a conductor in a plane; a first conductor, mounted in said plane by said means for mounting a conductor, extending from a first terminal to a second terminal and arranged in said plane in a first spiral pattern, said first spiral pattern having spiral loops; a second conductor, mounted coplanar with said first conductor in said plane by said means for mounting a conductor, extending from a third terminal to a fourth terminal and arranged in said plane according to a second spiral pattern, said second spiral pattern having spiral loops and being substantially identical to said first spiral pattern and located so that at least one of the spiral loops of said second conductor extends between the spiral loops of said first spiral pattern; and a centertap having means for connecting said second terminal to said fourth terminal.
Claim 2
Dependent Claim
149 words
An inductor comprising: a mounting structure having means for mounting a conductor in a plane; a first conductor, mounted in said plane by said means for mounting a conductor, extending from a first terminal to a second terminal and arranged in said plane in a first spiral pattern, said first spiral pattern having spiral loops; a second conductor, mounted coplanar with said first conductor in said plane by said means for mounting a conductor, extending from a third terminal to a fourth terminal and arranged in said plane according to a second spiral pattern, said second spiral pattern having spiral loops and being substantially identical to said first spiral pattern and located so that at least one of the spiral loops of said second conductor extends between the spiral loops of said first spiral pattern; and a centertap having means for connecting said second terminal to said fourth terminal.
Claim 3
Dependent Claim
38 words
The inductor of claim 1, wherein all of the spiral loops in said first spiral pattern and all of the spiral loops in said second spiral pattern travel in one of a clockwise direction and a counterclockwise direction.
Claim 4
Dependent Claim
51 words
The inductor of claim 2, wherein the spiral loops in said first spiral pattern are concentrically interleaved with the spiral loops in said second spiral pattern so that all loops of said inductor form a single concentric spiral shape traveling in said one of a clockwise direction and a counterclockwise direction.
Claim 5
Dependent Claim
30 words
The inductor of claim 2, wherein said first conductor and said second conductor are arranged in a geometry which includes one of a square, rectangle, circle, hexagon, octagon, and ellipse.
Claim 6
Dependent Claim
27 words
The inductor of claim 1, wherein said first terminal and said third terminal input differentially excited AC signals into said first conductor and said second conductor, respectively.
Claim 7
Dependent Claim
39 words
The inductor of claim 1, wherein said first conductor and said second conductor are mounted on said mounting structure without a metal ground plane disposed at least one of above and below said first conductor and said second conductor.
Claim 8
Dependent Claim
34 words
The inductor of claim 6, wherein said first conductor and said second conductor are mounted on said mounting structure without a metal ground plane above and below said first conductor and said second conductor.
Claim 9
Dependent Claim
81 words
A centertap inductor comprising: a first spiral conductor and a second spiral conductor, said first and second spiral conductors arranged in a common plane on a mounting surface and arranged in a mutually nested spiral pattern; a center connect terminal connected to a first end of each of said first and second spiral conductors; a first terminal connected to a second end of said first spiral conductor; and a second terminal connected to a second end of said second spiral conductor.
Claim 10
Dependent Claim
81 words
A centertap inductor comprising: a first spiral conductor and a second spiral conductor, said first and second spiral conductors arranged in a common plane on a mounting surface and arranged in a mutually nested spiral pattern; a center connect terminal connected to a first end of each of said first and second spiral conductors; a first terminal connected to a second end of said first spiral conductor; and a second terminal connected to a second end of said second spiral conductor.
Claim 11
Dependent Claim
34 words
The inductor of claim 8, wherein an entire length of said first spiral conductor and an entire length of said second spiral conductor travel in one of a clockwise direction and a counterclockwise direction.
Claim 12
Dependent Claim
50 words
The inductor of claim 9, wherein the entire length of said first spiral conductor and the entire length of said second spiral conductor are concentrically interleaved so that said mutually nested spiral pattern contains only one spiral pattern traveling in said one of a clockwise direction and a counterclockwise direction.
Claim 13
Dependent Claim
32 words
The inductor of claim 9, wherein said first spiral conductor and said second spiral conductor are arranged in a geometry which includes one of a square, rectangle, circle, hexagon, octagon, and ellipse.
Claim 14
Dependent Claim
37 words
The inductor of claim 8, wherein said first terminal and said second terminal input differentially excited AC signals into the second end of said first spiral conductor and the second end of said second spiral conductor, respectively.
Claim 15
Dependent Claim
43 words
The inductor of claim 8, wherein said first spiral conductor and said second spiral conductor are mounted on a mounting structure without a metal ground plane disposed at least one of above and below said first spiral conductor and said second spiral conductor.
Claim 16
Dependent Claim
36 words
The inductor of claim 13, wherein said first spiral conductor and said second spiral conductor are mounted on said mounting structure without a metal ground plane above and below said first conductor and said second conductor.
References Cited (Backward Citations)
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| 7.5 Years (Year 8) | 2006-04-05 | 2006-10-05 | 2007-04-06 | $3760.00 | Window Closed / Lapsed |
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