US6025807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orientation independent loop antenna
Assignee: Nokia of America Corp
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Filing: 1999-03-12
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Granted: 2000-02-15
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Expires: 2019-03-12
Abstract
Abstract This invention relates to an antenna for use in detecting electromagnetic noise radiation in which a high frequency, asymmetric signal has been generated. The invention relates to a loop antenna design which uses two loops that are run in opposite direction to each other, thereby resulting in two out-of-phase signals being detected in the loops which are then combined as the antenna output.
Inventors
- 👤 Min-Chung Jon
- 👤 Vito Palazzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:41
CPC Classifications
H; H01; H01Q; H01Q7/00; H01Q11/00; H01Q11/12; H01Q21/00; H01Q21/06; H01Q21/08; H01Q21/29
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
136 words
An antenna system for use in a electrical device which detects high frequency electromagnetic noise, said antenna comprising: (a) a conductive base element comprising a center connection terminal and a ground connection terminal; (b) a first conductive loop lying in a first loop plane and extending in a clockwise direction from the center connection terminal to the ground connection terminal; and, (c) a second conductive loop, having substantially the same shape and form as said first conductive loop, lying in a second loop plane and extending in a counterclockwise direction from the center connection terminal to the ground connection terminal, wherein said first loop plane and said second loop plane are substantially parallel and wherein the first conductive loop is displaced in the first loop plane a maximum fixed distance d from said second conductive loop.
Claim 2
Dependent Claim
136 words
An antenna system for use in a electrical device which detects high frequency electromagnetic noise, said antenna comprising: (a) a conductive base element comprising a center connection terminal and a ground connection terminal; (b) a first conductive loop lying in a first loop plane and extending in a clockwise direction from the center connection terminal to the ground connection terminal; and, (c) a second conductive loop, having substantially the same shape and form as said first conductive loop, lying in a second loop plane and extending in a counterclockwise direction from the center connection terminal to the ground connection terminal, wherein said first loop plane and said second loop plane are substantially parallel and wherein the first conductive loop is displaced in the first loop plane a maximum fixed distance d from said second conductive loop.
Claim 3
Dependent Claim
14 words
The antenna system of claim 1 wherein the conductive base element is a T-connector.
Claim 4
Dependent Claim
31 words
The antenna system of claim 2 wherein each conductive loop comprises an approximate circle of fixed diameter x, where x is in the range of 9.40 cm. plus or minus 10%.
Claim 5
Dependent Claim
24 words
The antenna system of claim 3 wherein the fixed distance of separation, d, is in the range of 0.5 cm plus or minus 10%.
Claim 6
Dependent Claim
22 words
The antenna system of claim 4 where the first conductive loop and the second conductive loop are encased in a nonconductive coating.
Claim 7
Dependent Claim
141 words
An antenna system for use in an electrical device which detects high frequency electromagnetic noise, said antenna comprising: (a) a conductive base element comprising a center connection terminal and a ground connection terminal; (b) a substantially circular first conductive loop extending in a clockwise direction from the center connection terminal to the ground connection terminal; and (c) a substantially circular second conductive loop, having substantially the same shape and form as said first conductive loop, extending in a counterclockwise direction from the center connection terminal to the ground connection terminal, wherein said first conductive loop and said second conductive loop are substantially co-planar and wherein the center of the first conductive loop is displaced in the plane a fixed distance, d, from the center of the second conductive loop, said distance, d, being less than the maximum width of either loop.
Claim 8
Dependent Claim
141 words
An antenna system for use in an electrical device which detects high frequency electromagnetic noise, said antenna comprising: (a) a conductive base element comprising a center connection terminal and a ground connection terminal; (b) a substantially circular first conductive loop extending in a clockwise direction from the center connection terminal to the ground connection terminal; and (c) a substantially circular second conductive loop, having substantially the same shape and form as said first conductive loop, extending in a counterclockwise direction from the center connection terminal to the ground connection terminal, wherein said first conductive loop and said second conductive loop are substantially co-planar and wherein the center of the first conductive loop is displaced in the plane a fixed distance, d, from the center of the second conductive loop, said distance, d, being less than the maximum width of either loop.
Claim 9
Dependent Claim
14 words
The antenna system of claim 6 wherein the conductive base element is a T-connector.
Claim 10
Dependent Claim
28 words
The antenna system of claim 7 wherein each conductive loop has a fixed diameter x, where x is in the range of 9.40 cm. plus or minus 10%.
Claim 11
Dependent Claim
22 words
The antenna system of claim 8 wherein the fixed distance d is in the range of 0.5 cm plus or minus 10%.
Claim 12
Dependent Claim
22 words
The antenna system of claim 9 where the first conductive loop and the second conductive loop are encased in a nonconductive coating.
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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) | 2003-02-14 | 2003-08-16 | 2004-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-02-14 | 2007-08-16 | 2008-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-02-14 | 2011-08-16 | 2012-02-15 | $7700.00 | Window Closed / Lapsed |