US5010349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plane patch antenna
Assignee: Nissan Motor Co Ltd
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Filing: 1990-03-16
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Granted: 1991-04-23
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Expires: 2010-03-16
Abstract
Abstract A plane patch antenna including patch and earth conductive plate members maintained in spaced-parallel relation to each other. A feeder shaft extends from the patch plate member for electrical connection of the patch plate member to a lead wire. The feeder shaft has a tapered portion extending from the patch plate member toward the earth plate member. The tapered portion has a cross-sectional area decreasing as going away from the patch plate member.
Inventors
- 👤 Tsuyoshi Mizuno
- 👤 Motoki Hirano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:09
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/36
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
138 words
A plane patch antenna comprising: a patch conductive plate member; an earth conductive plate member; a plurality of short pins extending between the patch and earth plane members to maintain the patch and earth plate members in spaced-parallel relation to each other and to make electric connection between the patch and earth plate members; and a feeder shaft extending from the patch plate member for electrical connection of the patch plate member to a lead wire, the feeder shaft having a tapered portion extending from the patch plate member toward the earth plate member, the tapered portion having a cross-sectional area decreasing as going away from the patch plate member, the tapered portion having a maximum diameter in its area of attachment to the patch plate member, the maximum diameter being in a range of 0.12λ to 0.18λ.
Claim 2
Dependent Claim
138 words
A plane patch antenna comprising: a patch conductive plate member; an earth conductive plate member; a plurality of short pins extending between the patch and earth plane members to maintain the patch and earth plate members in spaced-parallel relation to each other and to make electric connection between the patch and earth plate members; and a feeder shaft extending from the patch plate member for electrical connection of the patch plate member to a lead wire, the feeder shaft having a tapered portion extending from the patch plate member toward the earth plate member, the tapered portion having a cross-sectional area decreasing as going away from the patch plate member, the tapered portion having a maximum diameter in its area of attachment to the patch plate member, the maximum diameter being in a range of 0.12λ to 0.18λ.
Claim 3
Dependent Claim
32 words
The plane patch antenna as claimed in claim 1, wherein the tapered portion is of a cone shape having a maximum diameter in its area of attachment to the patch plate member.
Claim 4
Dependent Claim
25 words
The plane patch antenna as claimed in claim 2, wherein the maximum diameter of the tapered portion is in a range of 0.12λ to 0.18λ.
Claim 5
Dependent Claim
22 words
The plane patch antenna as claimed in claim 3, wherein the patch plate member has a diameter ranging from 0.45λ to 0.57λ.
Claim 6
Dependent Claim
32 words
The plane patch antenna as claimed in claim 4, wherein the tapered portion has a length equal to or greater than one-forth of the distance between the patch and earth plate members.
Claim 7
Dependent Claim
27 words
The plane patch antenna as claimed in claim 5, wherein the earth plate member is spaced at a distance greater than 0.03λ from the patch plate member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-22 | 1994-10-22 | 1995-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-22 | 1998-10-22 | 1999-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-22 | 2002-10-22 | 2003-04-23 | $7700.00 | Window Closed / Lapsed |