US6008770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planar antenna and antenna array
Assignee: Ricoh Co Ltd
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Filing: 1997-06-06
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Granted: 1999-12-28
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Expires: 2017-06-06
Abstract
Abstract A tapered slot plane antenna apparatus for a millimeter wave radio communication system which provides a tapered pattern composed by utilizing a Fermi-Diac distribution function so as to consider an impedance matching and a directivity of the antenna apparatus. Supporting layers and protection layers may be utilized to provide sufficient strength for implementation in a compact millimeter wave radio communication system. The plane antenna may further prevent a directivity from deteriorating even if distances between end portions of an antenna aperture portion and ends of an antenna are decreased. A slot width of a slot line may be widened in tapering for radiating an electromagnetic wave in a progressive direction of the slot line by a conductor portion having a slot line and a corrugated structure portion at respective end portions located parallel to a radiating direction of the electromagnetic wave.
Inventors
- 👤 Satoru Sugawara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:38
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/08; H01Q13/085
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
96 words
A planar antenna apparatus for radiating or receiving a radiowave, having a wavelength of one centimeter or less, of a radio communication system, comprising: a planar substrate; an electric conduction layer which connects said planar substrate to a circuitry of said radio communication system, said electric conduction layer providing a tapered slot pattern for radiating and receiving the radiowave, wherein said tapered slot pattern is described by a following function: ##EQU4## wherein x is a variable of position coordinates on a radiation direction of said planar antenna apparatus, and a, b, and c are predetermined constants.
Claim 2
Dependent Claim
96 words
A planar antenna apparatus for radiating or receiving a radiowave, having a wavelength of one centimeter or less, of a radio communication system, comprising: a planar substrate; an electric conduction layer which connects said planar substrate to a circuitry of said radio communication system, said electric conduction layer providing a tapered slot pattern for radiating and receiving the radiowave, wherein said tapered slot pattern is described by a following function: ##EQU4## wherein x is a variable of position coordinates on a radiation direction of said planar antenna apparatus, and a, b, and c are predetermined constants.
Claim 3
Dependent Claim
97 words
A planar antenna apparatus for radiating or receiving a radiowave, having a wavelength of one centimeter or less, of a radio communication system, comprising: a planar substrate; an electric conduction layer which connects said planar substrate to a circuitry of said radio communication system, said electric conduction layer providing a tapered slot pattern for radiating and receiving the radiowave, wherein said tapered slot pattern is described by a following function: ##EQU5## wherein x is a variable of position coordinates on a radiation direction of said planar antenna apparatus, and a, b, c and d are predetermined constants.
Claim 4
Dependent Claim
97 words
A planar antenna apparatus for radiating or receiving a radiowave, having a wavelength of one centimeter or less, of a radio communication system, comprising: a planar substrate; an electric conduction layer which connects said planar substrate to a circuitry of said radio communication system, said electric conduction layer providing a tapered slot pattern for radiating and receiving the radiowave, wherein said tapered slot pattern is described by a following function: ##EQU5## wherein x is a variable of position coordinates on a radiation direction of said planar antenna apparatus, and a, b, c and d are predetermined constants.
Claim 5
Dependent Claim
91 words
A planar antenna apparatus for radiating or receiving a radiowave of a radio communication system, comprising: an antenna layer including a dielectric layer, and which provides a tapered pattern for radiating and receiving the radiowave; supporting layers which sandwich said antenna layer, wherein said supporting layers are composed of materials which have a lower dielectric ratio than said dielectric layer of said antenna layer; and protection layers which sandwich said supporting layers, wherein said protection layers are composed by dielectric materials and which are further harder materials than said supporting layers.
Claim 6
Dependent Claim
91 words
A planar antenna apparatus for radiating or receiving a radiowave of a radio communication system, comprising: an antenna layer including a dielectric layer, and which provides a tapered pattern for radiating and receiving the radiowave; supporting layers which sandwich said antenna layer, wherein said supporting layers are composed of materials which have a lower dielectric ratio than said dielectric layer of said antenna layer; and protection layers which sandwich said supporting layers, wherein said protection layers are composed by dielectric materials and which are further harder materials than said supporting layers.
Claim 7
Dependent Claim
31 words
A planar antenna apparatus as recited in claim 3, wherein said antenna layer is composed of a combination of an antenna substrate of a dielectric film and an electric conduction layer.
Claim 8
Dependent Claim
20 words
A planar antenna apparatus as recited in claim 3, wherein said supporting layers are composed of a foam dielectric material.
Claim 9
Dependent Claim
17 words
A planar antenna apparatus as recited in claim 3, wherein said protection layers are composed of PTFE.
Claim 10
Dependent Claim
27 words
A planar antenna apparatus as recited in claim 3, wherein said protection layers further provide a wave control device which controls directivity of said planar antenna apparatus.
Claim 11
Dependent Claim
17 words
A planar antenna apparatus as recited in claim 3, wherein said protection layers provide a cylindrical structure.
Claim 12
Dependent Claim
24 words
A planar antenna apparatus as recited in claim 3, wherein said antenna layers further include circuitry of said radio communication system on a surface.
Claim 13
Dependent Claim
62 words
A plane antenna having a structure in which a slot width of a slot line is widened in tapering for radiating an electromagnetic wave in a progressive direction of said slot line, comprising: a conductor portion having said slot line; and a corrugated structure at respective end portions of said conductor portion located parallel to a radiating direction of said electromagnetic wave.
Claim 14
Dependent Claim
62 words
A plane antenna having a structure in which a slot width of a slot line is widened in tapering for radiating an electromagnetic wave in a progressive direction of said slot line, comprising: a conductor portion having said slot line; and a corrugated structure at respective end portions of said conductor portion located parallel to a radiating direction of said electromagnetic wave.
Claim 15
Dependent Claim
19 words
A plane antenna as recited in claim 10, wherein said slot pattern is tapered using a Fermi-Dirac distribution function.
Claim 16
Dependent Claim
19 words
A plane antenna as recited in claim 10, wherein a wavelength of said radiowave is one centimeter or less.
Claim 17
Dependent Claim
45 words
A plane antenna as recited in claim 12, wherein said tapered slot pattern is described by a following function: ##EQU6## wherein x is a variable of position coordinates on a radiation direction of said planar antenna apparatus, and a, b, and c are predetermined constants.
Claim 18
Dependent Claim
46 words
A plane antenna as recited in claim 12, wherein said tapered slot pattern is described by a following function: ##EQU7## wherein x is a variable of position coordinates on a radiation direction of said planar antenna apparatus, and a, b, c and d are predetermined constants.
Claim 19
Dependent Claim
69 words
An antenna array including, on a same plane, a plurality of plane antennas having a structure in which a slot width of a slot line is widened in tapering for radiating an electromagnetic wave in a progressive direction of said slot line, comprising: a conductor portion having a plurality of said slot lines; and a slit in which a corrugated structure is disposed between each of said slot lines.
Claim 20
Dependent Claim
69 words
An antenna array including, on a same plane, a plurality of plane antennas having a structure in which a slot width of a slot line is widened in tapering for radiating an electromagnetic wave in a progressive direction of said slot line, comprising: a conductor portion having a plurality of said slot lines; and a slit in which a corrugated structure is disposed between each of said slot lines.
Claim 21
Dependent Claim
19 words
A plane antenna as recited in claim 15 wherein said slot pattern is tapered using a Fermi-Dirac distribution function.
Claim 22
Dependent Claim
19 words
A plane antenna as recited in claim 15, wherein a wavelength of said radiowave is one centimeter or less.
Claim 23
Dependent Claim
46 words
A planar antenna apparatus as recited in claim 17, wherein said tapered slot pattern is described by a following function: ##EQU8## wherein x is a variable of position coordinates on a radiation direction of said planar antenna apparatus, and a, b, and c are predetermined constants.
Claim 24
Dependent Claim
47 words
A planar antenna apparatus as recited in claim 17, wherein said tapered slot pattern is described by a following function: ##EQU9## wherein x is a variable of position coordinates on a radiation direction of said planar antenna apparatus, and a, b, c and d are predetermined constants.
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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) | 2002-12-27 | 2003-06-28 | 2003-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-27 | 2007-06-28 | 2007-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-27 | 2011-06-28 | 2011-12-28 | $7700.00 | Window Closed / Lapsed |