Patent US5365245A successfully refreshed from Google Patents.
US5365245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid orthogonal transverse electromagnetic fed reflector antenna
Assignee: United States Department of the Navy
•
Filing: 1993-05-06
•
Granted: 1994-11-15
•
Expires: 2013-05-06
Abstract
Abstract A hybrid orthogonal transverse electromagnetic fed reflector antenna is dlosed which comprises an electromagnetic reflector; a transverse electromagnetic transmission carrier which includes a first electrically conductive strut having a first electrical impedance which is mounted in electrical contact with the reflector, and a second electrically conductive strut having a second electrical impedance substantially equal to the first electrical impedance, and which is mounted in electrical contact with the reflector; and a transverse electromagnetic feed having a first electrical conductor mounted in electrical contact with the first strut, and a second electrical conductor electrically isolated from the first electrical conductor and electrically coupled to the second strut.
Inventors
- 👤 Thinh Q. Ho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:09
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/10; H01Q19/12
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
98 words
A broadband antenna, comprising: an electromagnetic reflector having a focal point; a transverse electromagnetic transmission carrier which includes: a first electrically conductive strut having a first electrical impedance and mounted in electrical contact with said reflector; and a second electrically conductive strut having a second electrical impedance substantially equal to said first electrical impedance, and which is mounted in electrical contact with said reflector; and a transverse electromagnetic feed having a first electrical conductor mounted in electrical contact with said first strut, and a second electrical conductor intersecting said focal point and electrically coupled to said second strut.
Claim 2
Dependent Claim
98 words
A broadband antenna, comprising: an electromagnetic reflector having a focal point; a transverse electromagnetic transmission carrier which includes: a first electrically conductive strut having a first electrical impedance and mounted in electrical contact with said reflector; and a second electrically conductive strut having a second electrical impedance substantially equal to said first electrical impedance, and which is mounted in electrical contact with said reflector; and a transverse electromagnetic feed having a first electrical conductor mounted in electrical contact with said first strut, and a second electrical conductor intersecting said focal point and electrically coupled to said second strut.
Claim 3
Dependent Claim
101 words
The antenna of claim 1 wherein: said reflector has a focal point along a focal axis; said first strut is a structure having two ends which are mounted proximal to the periphery of said reflector at locations separated from each other by about 90 degrees with respect to a plane which intersects said focal axis at substantially 90°; and said second strut is a structure having two ends which are mounted proximal to the periphery of said reflector at locations separated from each other and from said ends of said first strut by about 90 degrees with respect to said plane.
Claim 4
Dependent Claim
16 words
The antenna of claim 1 wherein said first and second struts have an exponentially curved profile.
Claim 5
Dependent Claim
21 words
The antenna of claim 3 further including a low frequency matching element mounted to each of said first and second struts.
Claim 6
Dependent Claim
21 words
The antenna of claim 3 further including a high frequency matching element mounted to each of said first and second struts.
Claim 7
Dependent Claim
16 words
The antenna of claim 1 wherein said first and second struts have a sinusoidally curved profile.
Claim 8
Dependent Claim
21 words
The antenna of claim 6 further including a low frequency matching element mounted to each of said first and second struts.
Claim 9
Dependent Claim
21 words
The antenna of claim 6 further including a high frequency matching element mounted to each of said first and second struts.
Claim 10
Dependent Claim
16 words
The antenna of claim 1 wherein said first and second struts have a linearly shaped profile.
Claim 11
Dependent Claim
21 words
The antenna of claim 9 further including a low frequency matching element mounted to each of said first and second struts.
Claim 12
Dependent Claim
21 words
The antenna of claim 9 further including a high frequency matching element mounted to each of said first and second struts.
Claim 13
Dependent Claim
16 words
The antenna of claim 1 wherein said reflector is shaped as a section of a paraboloid.
Claim 14
Dependent Claim
16 words
The antenna of claim 1 wherein said reflector is shaped as a section of an ellipsoid.
Claim 15
Dependent Claim
16 words
The antenna of claim 1 wherein said reflector is shaped as a section of a cylinder.
Claim 16
Dependent Claim
26 words
The antenna of claim 1 wherein said reflector has a convex surface and which further includes an electromagnetic radiation absorbent material mounted to said convex surface.
Claim 17
Dependent Claim
114 words
A broadband radio frequency transmission system, comprising: an electromagnetic reflector having a focal point; a transverse electromagnetic transmission carrier including: a first electrically conductive strut having a first electrical impedance and mounted in electrical contact with said reflector; and a second electrically conductive strut having a second electrical impedance substantially equal to said first electrical impedance, and which is mounted in electrical contact with said reflector; a transverse electromagnetic feed having a first electrical conductor mounted in electrical contact with said first strut, and a second electrical conductor intersecting said focal point and electrically coupled to said second strut; and a radio frequency transmitter having an output operably coupled to said transverse electromagnetic feed.
Claim 18
Dependent Claim
114 words
A broadband radio frequency transmission system, comprising: an electromagnetic reflector having a focal point; a transverse electromagnetic transmission carrier including: a first electrically conductive strut having a first electrical impedance and mounted in electrical contact with said reflector; and a second electrically conductive strut having a second electrical impedance substantially equal to said first electrical impedance, and which is mounted in electrical contact with said reflector; a transverse electromagnetic feed having a first electrical conductor mounted in electrical contact with said first strut, and a second electrical conductor intersecting said focal point and electrically coupled to said second strut; and a radio frequency transmitter having an output operably coupled to said transverse electromagnetic feed.
Claim 19
Dependent Claim
115 words
A broadband radio frequency receiving system, comprising: an electromagnetic reflector having a focal point; a transverse electromagnetic feed transmission carrier including: a first electrically conductive strut having a first electrical impedance and mounted in electrical contact with said reflector; and a second electrically conductive strut having a second electrical impedance substantially equal to said first electrical impedance, and which is mounted in electrical contact with said reflector; a transverse electromagnetic feed having a first electrical conductor mounted in electrical contact with said first strut, and a second electrical conductor intersecting said focal point and electrically coupled to said second strut; and a radio frequency receiver having an input operably coupled to said transverse electromagnetic feed.
Claim 20
Dependent Claim
115 words
A broadband radio frequency receiving system, comprising: an electromagnetic reflector having a focal point; a transverse electromagnetic feed transmission carrier including: a first electrically conductive strut having a first electrical impedance and mounted in electrical contact with said reflector; and a second electrically conductive strut having a second electrical impedance substantially equal to said first electrical impedance, and which is mounted in electrical contact with said reflector; a transverse electromagnetic feed having a first electrical conductor mounted in electrical contact with said first strut, and a second electrical conductor intersecting said focal point and electrically coupled to said second strut; and a radio frequency receiver having an input operably coupled to said transverse electromagnetic feed.
References Cited (Backward Citations)
US2846678A
Cited
US3193831A
Cited
US3611393A
Cited
US4095230A
Cited
US4198639A
Cited
US4348677A
Cited
US4544928A
Cited
FR2523772A1
Cited
US4786915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-11-14 | 1998-05-16 | 1998-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-14 | 2002-05-16 | 2002-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-14 | 2006-05-16 | 2006-11-15 | $7700.00 | Window Closed / Lapsed |