Patent US5898404A successfully refreshed from Google Patents.
US5898404A
Expired / Lapsed
US
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Non-coplanar resonant element printed circuit board antenna
Assignee: Industrial Technology Research Institute
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Filing: 1995-12-22
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Granted: 1999-04-27
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Expires: 2015-12-22
Abstract
Abstract An antenna is provided including first and second strip resonant elements, a dielectric and a metal cover. The first strip resonant element has an F-shaped area that lies in a first plane. The second strip resonant element has an L-shaped area that lies in a second plane that is parallel to the first plane. The second strip at least partially underlies the first strip. The dielectric is positioned between the first and second strips. A metal cover is provided. Part of the metal cover is positioned perpendicularly to the first and second strips so as to provide electromagnetic shielding for the first and second strips.
Inventors
- 👤 Chewnpu Jou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:05
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q9/0471; H01Q1/00; H01Q1/52; H01Q1/521; H01Q9/0414
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
97 words
An antenna comprising: a first strip resonant element having an F-shaped area that lies in a first plane, a second strip resonant element having an L-shaped area that lies in a second plane that is parallel to said first plane, said second strip resonant element at least partially underlying said first strip resonant element, a dielectric positioned between said first and second strip resonant elements, and a metal cover, a part of which is perpendicular to said first and second strip resonant elements so as to provide electromagnetic shielding for said first and second strip resonant elements.
Claim 2
Dependent Claim
97 words
An antenna comprising: a first strip resonant element having an F-shaped area that lies in a first plane, a second strip resonant element having an L-shaped area that lies in a second plane that is parallel to said first plane, said second strip resonant element at least partially underlying said first strip resonant element, a dielectric positioned between said first and second strip resonant elements, and a metal cover, a part of which is perpendicular to said first and second strip resonant elements so as to provide electromagnetic shielding for said first and second strip resonant elements.
Claim 3
Dependent Claim
42 words
The antenna of claim 1 wherein said first and second strip resonant elements are conductors of a printed circuit board and wherein said dielectric is a printed circuit board substrate on which said first and second strip resonant elements are laid out.
Claim 4
Dependent Claim
13 words
The antenna of claim 1 wherein said metal cover is connected to ground.
Claim 5
Dependent Claim
158 words
An antenna comprising: a first strip resonant element having an F-shaped area that lies in a first plane, a second strip resonant element having an L-shaped area that lies in a second plane that is parallel to said first plane, said second strip resonant element at least partially underlying said first strip resonant element, a dielectric positioned between said first and second strip resonant elements, and a metal cover, a part of which is perpendicular to said first and second strip resonant elements so as to provide electromagnetic shielding for said first and second strip resonant elements, wherein said metal cover comprises first and second L-bracket shaped portions, said first L-bracket shaped portion being perpendicularly connected to said first strip resonant element and said second L-bracket shaped portion being perpendicularly connected to said second strip resonant element so that said first and second L-bracket shaped portions overlap each other but do not overlap said second strip resonant element.
Claim 6
Dependent Claim
158 words
An antenna comprising: a first strip resonant element having an F-shaped area that lies in a first plane, a second strip resonant element having an L-shaped area that lies in a second plane that is parallel to said first plane, said second strip resonant element at least partially underlying said first strip resonant element, a dielectric positioned between said first and second strip resonant elements, and a metal cover, a part of which is perpendicular to said first and second strip resonant elements so as to provide electromagnetic shielding for said first and second strip resonant elements, wherein said metal cover comprises first and second L-bracket shaped portions, said first L-bracket shaped portion being perpendicularly connected to said first strip resonant element and said second L-bracket shaped portion being perpendicularly connected to said second strip resonant element so that said first and second L-bracket shaped portions overlap each other but do not overlap said second strip resonant element.
Claim 7
Dependent Claim
105 words
The antenna of claim 2 wherein each of said first and second L-bracket shaped portions comprises two planar surfaces which are perpendicularly connected together at a common edge of both of said surfaces, said first strip resonant element being connected to an edge, parallel to said common edge, of said first L-bracket shaped portion and said second strip resonant element being connected to an edge, parallel to said common edge, of said second L-bracket shaped portion, said connecting edges and common edges of said first and second L-bracket shaped portions lying in the same plane which is perpendicular to both said first and second planes.
Claim 8
Dependent Claim
42 words
The antenna of claim 4 wherein said first and second strip resonant elements are conductors of a printed circuit board and wherein said dielectric is a printed circuit board substrate on which said first and second strip resonant elements are laid out.
Claim 9
Dependent Claim
30 words
The antenna of claim 4 wherein said perpendicular part of said metal cover comprises a slot, and wherein a portion of said first strip resonant element extends through said slot.
Claim 10
Dependent Claim
34 words
The antenna of claim 7 wherein said portion of said first strip resonant element which extends through said slot is connected to a conductor which carries a signal to be radiated by said antenna.
Claim 11
Dependent Claim
13 words
The antenna of claim 8 wherein said metal cover is connected to ground.
Claim 12
Dependent Claim
122 words
An antenna comprising: a first strip resonant element having an F-shaped area that lies in a first plane, a second strip resonant element having an L-shaped area that lies in a second plane that is parallel to said first plane, said second strip resonant element at least partially underlying said first strip resonant element, a dielectric positioned between said first and second strip resonant elements, and a metal cover, a part of which is perpendicular to said first and second strip resonant elements so as to provide electromagnetic shielding for said first and second strip resonant elements, wherein said perpendicular part of said metal cover comprises a slot, and wherein a portion of said first strip resonant element extends through said slot.
Claim 13
Dependent Claim
122 words
An antenna comprising: a first strip resonant element having an F-shaped area that lies in a first plane, a second strip resonant element having an L-shaped area that lies in a second plane that is parallel to said first plane, said second strip resonant element at least partially underlying said first strip resonant element, a dielectric positioned between said first and second strip resonant elements, and a metal cover, a part of which is perpendicular to said first and second strip resonant elements so as to provide electromagnetic shielding for said first and second strip resonant elements, wherein said perpendicular part of said metal cover comprises a slot, and wherein a portion of said first strip resonant element extends through said slot.
Claim 14
Dependent Claim
34 words
The antenna of claim 10 wherein said portion of said first strip resonant element which extends through said slot is connected to a conductor which carries a signal to be radiated by said antenna.
Claim 15
Dependent Claim
13 words
The antenna of claim 11 wherein said metal cover is connected to ground.
Claim 16
Dependent Claim
42 words
The antenna of claim 7 wherein said first and second strip resonant elements are conductors of a printed circuit board and wherein said dielectric is a printed circuit board substrate on which said first and second strip resonant elements are laid out.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2002-04-26 | 2002-10-26 | 2003-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-04-26 | 2006-10-26 | 2007-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-04-26 | 2010-10-26 | 2011-04-27 | $7700.00 | Window Closed / Lapsed |