Patent US5898405A successfully refreshed from Google Patents.
US5898405A
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US
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Omnidirectional antenna formed one or two antenna elements symmetrically to a ground conductor
Assignee: Toshiba Corp
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Filing: 1997-03-18
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Granted: 1999-04-27
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Expires: 2017-03-18
Abstract
Abstract On respective ground conductor plate surfaces, first and second dielectric substrates are formed. First and second antenna elements made of a conductor film of a rectangular cooper leaf or the like are formed on opposite surfaces of the first and second dielectric substrates to the ground conductor plate. The first and second antenna elements-are fed by, for example, a coplanar waveguide feed line, slot feed or the like. Thus, an omnidirectional antenna is realized having simple construction, reducing a size and production cost.
Inventors
- 👤 Hisao Iwasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:34
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/36; H01Q1/38; H01Q21/00; H01Q21/06; H01Q21/08; H01Q25/00; H01Q25/005; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q9/045; H01Q9/0457
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
54 words
An antenna, comprising: a ground conductor plate; a first antenna element opposed to a first surface of said ground conductor plate; a second antenna element opposed to a second surface of said ground conductor plate; and a feed line time electromagnetically coupling and feeding both said first antenna element and said second antenna element.
Claim 2
Dependent Claim
54 words
An antenna, comprising: a ground conductor plate; a first antenna element opposed to a first surface of said ground conductor plate; a second antenna element opposed to a second surface of said ground conductor plate; and a feed line time electromagnetically coupling and feeding both said first antenna element and said second antenna element.
Claim 3
Dependent Claim
43 words
The antenna as set forth in claim 1, said antenna further comprising: a first dielectric substrate formed between said ground conductor plate and said first antenna element; and a second dielectric substrate formed between said ground conductor plate and said second antenna element.
Claim 4
Dependent Claim
18 words
The antenna as set forth in claim 1, wherein said feed line is a coplanar waveguide feed line.
Claim 5
Dependent Claim
26 words
The antenna as set forth in claim 1, wherein said feed line feeds said first antenna element and said second antenna element via a slot feed.
Claim 6
Dependent Claim
64 words
The antenna as set forth in claim 4, wherein said ground conductor plate has a first ground conductor plate and a second ground conductor plate facing each other; and said feed line is formed between said first ground conductor plate and said second ground conductor plate, and slot portions disposed on said first ground conductor plate and on said second ground conductor plate, respectively.
Claim 7
Dependent Claim
40 words
The antenna as set forth in claim 2, wherein said first antenna element is a first patch antenna formed on a first dielectric substrate; and said second antenna element is a second patch antenna formed on a second dielectric substrate.
Claim 8
Dependent Claim
42 words
The antenna as set forth in claim 2, wherein dimensions of said first dielectric substrate and said second dielectric substrate which intersect with longer sides said feed line at right angle are set to 0.1 to 0.35 times of wave length used.
Claim 9
Dependent Claim
37 words
The antenna as set forth in claim 1, wherein a plurality of said first antenna elements and a plurality of said second antenna elements are formed at predetermined intervals along with longer sides of said feed line.
Claim 10
Dependent Claim
38 words
The antenna as set forth in claim 8, wherein a plurality of said first antenna elements and a plurality of said second antenna elements are fed by an electromagnetic coupling feeding via one continuous coplanar waveguide feed line.
Claim 11
Dependent Claim
43 words
The antenna as set forth in claim 8, wherein adjacent antenna elements of said plurality of first antenna elements and adjacent antenna elements of said plurality of second antenna elements are fed by an electromagnetic coupling feeding via independent coplanar waveguide feed lines.
Claim 12
Dependent Claim
85 words
The antenna as set forth in claim 8, wherein said ground conductor plate has a first ground conductor plate and a second ground conductor faced each other; and a plurality of said first antenna elements and a plurality of said second antenna elements are fed by an electromagnetic coupling feeding via one continuous feed line disposed between said first ground conductor plate and said second ground conductor plate, and via slot portions disposed on said first ground conductor plate and said second ground conductor plate.
Claim 13
Dependent Claim
63 words
An antenna comprising: a pillar-shaped ground conductor; a cylindrical dielectric substrate formed surrounding said ground conductor; a plurality of cylindrical antenna element formed on an inside surface of said dielectric substrate; and a feed means for feeding said antenna element; wherein a plurality of said antenna elements are fed by an electromagnetic coupling feeding via one continuous feed line of the feed means.
Claim 14
Dependent Claim
63 words
An antenna comprising: a pillar-shaped ground conductor; a cylindrical dielectric substrate formed surrounding said ground conductor; a plurality of cylindrical antenna element formed on an inside surface of said dielectric substrate; and a feed means for feeding said antenna element; wherein a plurality of said antenna elements are fed by an electromagnetic coupling feeding via one continuous feed line of the feed means.
Claim 15
Dependent Claim
67 words
An antenna comprising: a pillar-shaped ground conductor; a cylindrical dielectric substrate formed surrounding said ground conductor; a plurality of cylindrical antenna element formed on an inside surface of said dielectric substrate; and a feed means for feeding said antenna elements; wherein adjacent antenna elements of a plurality of said antenna elements are fed by an electromagnetic coupling feeding via independent coplanar feed lines of the feed means.
Claim 16
Dependent Claim
67 words
An antenna comprising: a pillar-shaped ground conductor; a cylindrical dielectric substrate formed surrounding said ground conductor; a plurality of cylindrical antenna element formed on an inside surface of said dielectric substrate; and a feed means for feeding said antenna elements; wherein adjacent antenna elements of a plurality of said antenna elements are fed by an electromagnetic coupling feeding via independent coplanar feed lines of the feed means.
Claim 17
Dependent Claim
83 words
An antenna comprising: a pillar-shaped ground conductor; a cylindrical dielectric substrate formed surrounding said ground conductor; a plurality of cylindrical antenna element formed on an inside surface of said dielectric substrate; and a feed means for feeding said antenna elements; 659 wherein said ground conductor is tube-shaped; and a plurality of said antenna elements are fed by an electromagnetic coupling feeding via one feed line of the feed means disposed within said ground conductor and via slot portions disposed on said ground conductor.
Claim 18
Dependent Claim
83 words
An antenna comprising: a pillar-shaped ground conductor; a cylindrical dielectric substrate formed surrounding said ground conductor; a plurality of cylindrical antenna element formed on an inside surface of said dielectric substrate; and a feed means for feeding said antenna elements; 659 wherein said ground conductor is tube-shaped; and a plurality of said antenna elements are fed by an electromagnetic coupling feeding via one feed line of the feed means disposed within said ground conductor and via slot portions disposed on said ground conductor.
Claim 19
Dependent Claim
89 words
An antenna, comprising: a ground conductor plate; a plurality of first antenna elements opposed to a first surface of said ground conductor plate; a plurality of second antenna elements opposed to a second surface of said ground conductor plate; and a feed means for feeding said first antenna elements and said second antenna elements, wherein said first antenna elements and said second antenna elements are formed at predetermined intervals along longer sides of said feed means so that the antenna has radiation directivity beam-tilted to a predetermined vertical direction.
Claim 20
Dependent Claim
89 words
An antenna, comprising: a ground conductor plate; a plurality of first antenna elements opposed to a first surface of said ground conductor plate; a plurality of second antenna elements opposed to a second surface of said ground conductor plate; and a feed means for feeding said first antenna elements and said second antenna elements, wherein said first antenna elements and said second antenna elements are formed at predetermined intervals along longer sides of said feed means so that the antenna has radiation directivity beam-tilted to a predetermined vertical direction.
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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 |
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