US5317324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printed antenna
Assignee: Sumitomo Metal Mining Co Ltd
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Filing: 1992-06-15
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Granted: 1994-05-31
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Expires: 2012-06-15
Abstract
Abstract In a printed antenna, a window is formed in a grounded conductor provided on one side of an insulator substrate, and a strip conductor is formed in the window as a strip antenna element. The grounded conductor has convex portions projecting toward a central portion of the strip conductor in a longitudinal direction of the strip conductor. Furthermore, in a printed antenna, a window is formed in a grounded conductor provided on one side of an insulator substrate and two strip conductor are formed in the window and a short conductor is provided to connect a longitudinally central portion of each of the strip conductor with the grounded conductor. Furthermore, in a printed antenna, a window is formed in a grounded conductor provided on one side of an insulator substrate, a strip conductor is formed in the window and a short antenna element is formed in the grounded conductor. A short conductor connects a longitudinally central portion of the strip conductor with the grounded conductor. Furthermore, a reflector plate may be provided or a plurality of the above-mentioned printed antenna are arranged on an insulator conductor.
Inventors
- 👤 Motoyuki Naito
- 👤 Koichi Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:55
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/0006; H01Q21/0075; H01Q21/24
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
133 words
A printed antenna which comprises a window opening formed in a grounded conductor layer provided on a front side of an insulator substrate, and a strip conductor arranged in the window opening of the grounded conductor layer as a strip antenna element which has a width in a horizontal direction and a length in a vertical direction of said grounded conductor layer, said grounded conductor layer being further formed with convex portions in the form of short segments having leading ends thereof projecting into said window opening closely spaced a short distance apart from a central portion of the length of said strip conductor from respective sides of said window opening formed in said grounded conductor layer and aligned in the horizontal direction of said grounded conductor layer relative to said strip conductor.
Claim 2
Dependent Claim
133 words
A printed antenna which comprises a window opening formed in a grounded conductor layer provided on a front side of an insulator substrate, and a strip conductor arranged in the window opening of the grounded conductor layer as a strip antenna element which has a width in a horizontal direction and a length in a vertical direction of said grounded conductor layer, said grounded conductor layer being further formed with convex portions in the form of short segments having leading ends thereof projecting into said window opening closely spaced a short distance apart from a central portion of the length of said strip conductor from respective sides of said window opening formed in said grounded conductor layer and aligned in the horizontal direction of said grounded conductor layer relative to said strip conductor.
Claim 3
Dependent Claim
59 words
A printed antenna according to claim 1 in which said convex portions are disposed symmetrical with respect to an axis along the length of said strip conductor, and a distance between leading ends of said convex portions is more than the width of said strip conductor and is less than three times of the width of said strip conductor.
Claim 4
Dependent Claim
27 words
A printed antenna according to claim 1 in which the width of leading end of each convex portion is less than the width of said strip conductor.
Claim 5
Dependent Claim
33 words
A printed antenna according to claim 1 in which a slot antenna element is formed as a slot cut in said grounded conductor layer adjacent to said window opening with said strip conductor.
Claim 6
Dependent Claim
25 words
A printed antenna constructed with a plurality of printed antenna units each having the aforementioned structure described in claim 1 provided on said insulator substrate.
Claim 7
Dependent Claim
37 words
A printed antenna according to claim 1 in which a reflector plate is provided on a rear side of said insulator substrate spaced by at least a thickness of said insulator substrate from said grounded conductor layer.
Claim 8
Dependent Claim
102 words
A printed antenna which comprises a window opening formed in a grounded conductor layer provided on a front side of an insulator substrate, two strip conductors arranged in the window opening of the grounded conductor layer spaced apart in parallel from each other, each of which has a width in a horizontal direction and a length in a vertical direction of said grounded conductor layer, and a short conductor extending in the horizontal direction and connecting a central portion of the length of each of said strip conductors with a respective side of said window opening formed in said grounded conductor layer.
Claim 9
Dependent Claim
102 words
A printed antenna which comprises a window opening formed in a grounded conductor layer provided on a front side of an insulator substrate, two strip conductors arranged in the window opening of the grounded conductor layer spaced apart in parallel from each other, each of which has a width in a horizontal direction and a length in a vertical direction of said grounded conductor layer, and a short conductor extending in the horizontal direction and connecting a central portion of the length of each of said strip conductors with a respective side of said window opening formed in said grounded conductor layer.
Claim 10
Dependent Claim
24 words
A printed antenna according to claim 7 in which the width of said short conductor is less than the width of said strip conductor.
Claim 11
Dependent Claim
18 words
A printed antenna according to said grounded conductor layer adjacent to said window opening with said strip conductor.
Claim 12
Dependent Claim
18 words
A printed antenna according to said grounded conductor layer adjacent to said window opening with said strip conductor.
Claim 13
Dependent Claim
25 words
A printed antenna constructed with a plurality of printed antenna units each having the aforementioned structure described in claim 7 provided on said insulator substrate.
Claim 14
Dependent Claim
22 words
A printed antenna according to claim 7 in which a reflector plate is provided on a rear side of said insulator substrate.
Claim 15
Dependent Claim
131 words
A printed antenna which comprises a window opening formed in a grounded conductor layer provided on a front side of an insulator substrate, a strip conductor arranged in the window opening of the grounded conductor layer which has a width in a horizontal direction and a length in a vertical direction of said grounded conductor layer, a slot antenna element formed as a slot cut in the grounded conductor layer on one side adjacent to and spaced a short distance apart from said window opening with said strip conductor, and said grounded conductor layer being further formed with a short conductor extending in the horizontal direction and connecting a central portion of the length of said strip conductor with a side of said window opening formed in said grounded conductor layer.
Claim 16
Dependent Claim
131 words
A printed antenna which comprises a window opening formed in a grounded conductor layer provided on a front side of an insulator substrate, a strip conductor arranged in the window opening of the grounded conductor layer which has a width in a horizontal direction and a length in a vertical direction of said grounded conductor layer, a slot antenna element formed as a slot cut in the grounded conductor layer on one side adjacent to and spaced a short distance apart from said window opening with said strip conductor, and said grounded conductor layer being further formed with a short conductor extending in the horizontal direction and connecting a central portion of the length of said strip conductor with a side of said window opening formed in said grounded conductor layer.
Claim 17
Dependent Claim
36 words
A printed antenna according to claim 12 in which said short conductor is connected between said strip conductor and said grounded conductor layer on an opposite side of said window opening from said slot antenna element.
Claim 18
Dependent Claim
24 words
A printed antenna according to claim 12 in which the width of said short conductor is less than the width of said strip conductor.
Claim 19
Dependent Claim
25 words
A printed antenna constructed with a plurality of printed antenna units each having the aforementioned structure described in claim 12 provided on said insulator substrate.
Claim 20
Dependent Claim
37 words
A printed antenna according to claim 12 in which a reflector plate is provided on a rear side of said insulator substrate spaced by at least a thickness of said insulator substrate from said grounded conductor layer.
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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) | 1997-05-30 | 1997-11-29 | 1998-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-30 | 2001-11-29 | 2002-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-30 | 2005-11-29 | 2006-05-31 | $7700.00 | Window Closed / Lapsed |