Patent US4961632A successfully refreshed from Google Patents.
Patent US5760750A successfully refreshed from Google Patents.
US5760750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broad band antenna having an elongated hollow conductor and a central grounded conductor
Assignee: United States Department of the Army
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Filing: 1996-08-14
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Granted: 1998-06-02
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Expires: 2016-08-14
Abstract
Abstract An antenna element comprised of an hollow conductor and a central groundedonductor within the hollow conductor, there being a variation in capacitance between the hollow conductor and the central conductor along their length.
Inventors
- 👤 Wilbur Guertin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:04
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/28
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
60 words
A broad band antenna element comprising: a hollow conductor configured as a cylinder; a central conductor configured as a truncated cone and mounted within the hollow conductor; the inner surface of the hollow conductor and the outer surface of the central conductor being such that the capacitance between them decreases from one end of the antenna element to the other.
Claim 2
Dependent Claim
60 words
A broad band antenna element comprising: a hollow conductor configured as a cylinder; a central conductor configured as a truncated cone and mounted within the hollow conductor; the inner surface of the hollow conductor and the outer surface of the central conductor being such that the capacitance between them decreases from one end of the antenna element to the other.
Claim 3
Dependent Claim
23 words
A broad band antenna element as set forth in claim 1 wherein said hollow conductor is comprised of a plurality of conductive rods.
Claim 4
Dependent Claim
39 words
A dipole antenna comprised of first and second antenna elements as set forth in claim 1, the said elements being aligned with their ends having the most capacitance between their respective hollow and central conductors adjacent to each other.
Claim 5
Dependent Claim
71 words
A dipole antenna as set forth in claim 3 further comprising: a first lead connected to the end of the hollow conductor of said first antenna element having the most capacitance with respect to its central grounded conductor; a second lead connected to the adjacent ends of said central conductors; and a third lead connected to the end of the hollow electrode of said second antenna element having the most capacitance.
Claim 6
Dependent Claim
66 words
A monopole antenna comprising: an antenna element as set forth in claim 1; a ground plane; a first lead connected to the end of the hollow conductor of said first antenna element having the most capacitance with respect to its central conductor; and a connection between the ground plane and the end of said central conductor having the most capacitance with respect to its hollow conductor.
Claim 7
Dependent Claim
65 words
A broad band antenna element comprising: a hollow conductor configured as a truncated cone; a central conductor configured as a truncated cone and mounted within the hallow conductor; the inner surface of the hollow conductor and the outer surface of the central conductor being divergent in opposite directions such that the capacitance between them decreases from one end of the antenna element to the other.
Claim 8
Dependent Claim
65 words
A broad band antenna element comprising: a hollow conductor configured as a truncated cone; a central conductor configured as a truncated cone and mounted within the hallow conductor; the inner surface of the hollow conductor and the outer surface of the central conductor being divergent in opposite directions such that the capacitance between them decreases from one end of the antenna element to the other.
Claim 9
Dependent Claim
23 words
A broad band antenna element as set forth in claim 6 wherein said hollow conductor is comprised of a plurality of conductive rods.
Claim 10
Dependent Claim
39 words
A dipole antenna comprised of first and second antenna elements as set forth in claim 6, said antenna elements being aligned with their ends having the most capacitance between their respective hollow and central conductors adjacent to each other.
Claim 11
Dependent Claim
71 words
A dipole antenna as set forth in claim 8 further comprising: a first lead connected to the end of the hollow conductor of said first antenna element having the most capacitance with respect to its central grounded conductor; a second lead connected to the adjacent ends of said central conductors; and a third lead connected to the end of the hollow electrode of said second antenna element having the most capacitance.
Claim 12
Dependent Claim
66 words
A monopole antenna comprising: an antenna element as set forth in claim 9; a ground plane; a first lead connected to the end of the hollow conductor of said first antenna element having the most capacitance with respect to its central conductor; and a connection between the ground plane and the end of said central conductor having the most capacitance with respect to its hollow conductor.
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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) | 2001-06-01 | 2001-12-01 | 2002-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-01 | 2005-12-01 | 2006-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-01 | 2009-12-01 | 2010-06-02 | $7700.00 | Window Closed / Lapsed |