Patent US5212494A successfully refreshed from Google Patents.
US5212494A
Expired / Lapsed
US
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Compact multi-polarized broadband antenna
Assignee: Raytheon Co
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Filing: 1990-10-31
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Granted: 1993-05-18
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Expires: 2010-10-31
Abstract
Abstract The disclosure relates to a multipolarized broad band antenna and antenna system wherein the antenna structure is formed on a substrate, the antenna structure on the substrate including a central feedpoint, a first antenna element having a plurality of regions composed of first plural interconnected concentric sectors of circles of diminishing radius extending to the feedpoint, and a second antenna element having a plurality of regions composed of second plural interconnected concentric sectors of circles of diminishing radius extending to the feedpoint, the second plural concentric sectors being interleaved with the first plural concentric sectors.
Inventors
- 👤 Dean A. Hofer
- 👤 Oren B. Kesler
- 👤 Lowell L. Loyet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:43
CPC Classifications
H; H01; H01Q; H01Q11/00; H01Q11/02; H01Q11/10; H01Q11/105; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/26; H01Q9/27
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
375 words
A multi-polarized broad band antenna which comprises: (a) a substrate; and (b) an antenna structure disposed on said substrate, said antenna structure including: (c) a central feedpoint; (d) first and second spaced apart signal injection/extraction connections disposed remote from said central feedpoint at the outer perimeter of said antenna structure; (e) a first radial transmission line extending from said central feed point to said first signal injection/extraction connection at said outer perimeter of said antenna; (f) a first antenna element having a plurality of elements defined by electrically conductive interconnected concentric circular sectors of diminishing radius extending from said outer antenna perimeter to said central feedpoint; (g) a second antenna element having a plurality of elements defined by electrically conductive interconnected concentric circular sectors of diminishing radius extending from said outer antenna perimeter to said central feedpoint, said second plural circular sectors being interleaved with said first plural circular sectors; (h) a second radial transmission line rotated ninety degrees from said first transmission line and extending from said central feedpoint to said second signal injection/extraction connection at said antenna perimeter; (i) a third antenna element having a plurality of elements defined by electrically conductive interconnected concentric circular sectors of diminishing radius extending from said outer antenna perimeter to said central feedpoint, said third plural circular sectors being interleaved with said second plural circular sectors; (j) a third radial transmission line rotated ninety degrees from said second transmission line and extending from said central feedpoint to said antenna perimeter and disposed opposite said first transmission lines; (k) a fourth antenna element having a plurality of elements defined by electrically conductive interconnected concentric circular sectors of diminishing radius extending from said outer antenna perimeter to said central feedpoint, said fourth plural circular sectors being interleaved with said first and third plural circular sectors; (l) a fourth radial transmission line rotated ninety degrees from said third transmission line and extending from said central feedpoint to said antenna perimeter and disposed opposite said second transmission line; (m) said first and third radial transmission lines forming a small gap defining said central feedpoint and extending in opposite directions from said central feedpoint for launching a signal at said central feedpoint travelling radially outward/inward to the resonant said conductive circular sectors.
Claim 2
Dependent Claim
375 words
A multi-polarized broad band antenna which comprises: (a) a substrate; and (b) an antenna structure disposed on said substrate, said antenna structure including: (c) a central feedpoint; (d) first and second spaced apart signal injection/extraction connections disposed remote from said central feedpoint at the outer perimeter of said antenna structure; (e) a first radial transmission line extending from said central feed point to said first signal injection/extraction connection at said outer perimeter of said antenna; (f) a first antenna element having a plurality of elements defined by electrically conductive interconnected concentric circular sectors of diminishing radius extending from said outer antenna perimeter to said central feedpoint; (g) a second antenna element having a plurality of elements defined by electrically conductive interconnected concentric circular sectors of diminishing radius extending from said outer antenna perimeter to said central feedpoint, said second plural circular sectors being interleaved with said first plural circular sectors; (h) a second radial transmission line rotated ninety degrees from said first transmission line and extending from said central feedpoint to said second signal injection/extraction connection at said antenna perimeter; (i) a third antenna element having a plurality of elements defined by electrically conductive interconnected concentric circular sectors of diminishing radius extending from said outer antenna perimeter to said central feedpoint, said third plural circular sectors being interleaved with said second plural circular sectors; (j) a third radial transmission line rotated ninety degrees from said second transmission line and extending from said central feedpoint to said antenna perimeter and disposed opposite said first transmission lines; (k) a fourth antenna element having a plurality of elements defined by electrically conductive interconnected concentric circular sectors of diminishing radius extending from said outer antenna perimeter to said central feedpoint, said fourth plural circular sectors being interleaved with said first and third plural circular sectors; (l) a fourth radial transmission line rotated ninety degrees from said third transmission line and extending from said central feedpoint to said antenna perimeter and disposed opposite said second transmission line; (m) said first and third radial transmission lines forming a small gap defining said central feedpoint and extending in opposite directions from said central feedpoint for launching a signal at said central feedpoint travelling radially outward/inward to the resonant said conductive circular sectors.
Claim 3
Dependent Claim
43 words
An antenna as set forth in claim 1 further including a plurality of microstrips, striplines or coaxial transmission line infinite baluns on said substrate, each extending from one of said injection/extraction connections to said central feedpoint and oriented ninety degrees from each other.
Claim 4
Dependent Claim
39 words
An antenna as set forth in claim 1 wherein said first plurality of antenna elements is disposed on one surface of said substrate and said second plurality of antenna elements is disposed on the opposite surface of said substrate.
Claim 5
Dependent Claim
39 words
An antenna as set forth in claim 2 wherein said first plurality of antenna elements is disposed on one surface of said substrate and said second plurality of antenna elements is disposed on the opposite surface of said substrate.
Claim 6
Dependent Claim
44 words
An antenna as set forth in claim 1 wherein said first plurality of antenna elements are alternately disposed on opposite sides of said first transmission line and said second plurality of antenna elements are alternately disposed on opposite sides of said second transmission line.
Claim 7
Dependent Claim
44 words
An antenna as set forth in claim 2 wherein said first plurality of antenna elements are alternately disposed on opposite sides of said first transmission line and said second plurality of antenna elements are alternately disposed on opposite sides of said second transmission line.
Claim 8
Dependent Claim
44 words
An antenna as set forth in claim 3 wherein said first plurality of antenna elements are alternately disposed on opposite sides of said first transmission line and said second plurality of antenna elements are alternately disposed on opposite sides of said second transmission line.
Claim 9
Dependent Claim
44 words
An antenna as set forth in claim 4 wherein said first plurality of antenna elements are alternately disposed on opposite sides of said first transmission line and said second plurality of antenna elements are alternately disposed on opposite sides of said second transmission line.
Claim 10
Dependent Claim
23 words
An antenna as set forth in claim 5, further including a shorting pin coupling said first and second transmission lines at said feedpoint.
Claim 11
Dependent Claim
23 words
An antenna as set forth in claim 6, further including a shorting pin coupling said first and second transmission lines at said feedpoint.
Claim 12
Dependent Claim
23 words
An antenna as set forth in claim 7, further including a shorting pin coupling said first and second transmission lines at said feedpoint.
Claim 13
Dependent Claim
23 words
An antenna as set forth in claim 8, further including a shorting pin coupling said first and second transmission lines at said feedpoint.
Claim 14
Dependent Claim
27 words
An antenna as set forth in claim 5 further including a microstrip disposed on said substrate coupling together said first and second transmission lines at said feedpoint.
Claim 15
Dependent Claim
27 words
An antenna as set forth in claim 6 further including a microstrip disposed on said substrate coupling together said first and second transmission lines at said feedpoint.
Claim 16
Dependent Claim
27 words
An antenna as set forth in claim 7 further including a microstrip disposed on said substrate coupling together said first and second transmission lines at said feedpoint.
Claim 17
Dependent Claim
27 words
An antenna as set forth in claim 8 further including a microstrip disposed on said substrate coupling together said first and second transmission lines at said feedpoint.
Claim 18
Dependent Claim
33 words
An antenna as set forth in claim 1, further including a first coaxial line coupled to said first signal injection/extraction connection and a second coaxial line coupled to said second signal injection/extraction connection.
Claim 19
Dependent Claim
33 words
An antenna as set forth in claim 2, further including a first coaxial line coupled to said first signal injection/extraction connection and a second coaxial line coupled to said second signal injection/extraction connection.
Claim 20
Dependent Claim
33 words
An antenna as set forth in claim 3, further including a first coaxial line coupled to said first signal injection/extraction connection and a second coaxial line coupled to said second signal injection/extraction connection.
Claim 21
Dependent Claim
33 words
An antenna as set forth in claim 4, further including a first coaxial line coupled to said first signal injection/extraction connection and a second coaxial line coupled to said second signal injection/extraction connection.
Claim 22
Dependent Claim
33 words
An antenna as set forth in claim 5, further including a first coaxial line coupled to said first signal injection/extraction connection and a second coaxial line coupled to said second signal injection/extraction connection.
Claim 23
Dependent Claim
33 words
An antenna as set forth in claim 6, further including a first coaxial line coupled to said first signal injection/extraction connection and a second coaxial line coupled to said second signal injection/extraction connection.
Claim 24
Dependent Claim
33 words
An antenna as set forth in claim 7, further including a first coaxial line coupled to said first signal injection/extraction connection and a second coaxial line coupled to said second signal injection/extraction connection.
Claim 25
Dependent Claim
33 words
An antenna as set forth in claim 8, further including a first coaxial line coupled to said first signal injection/extraction connection and a second coaxial line coupled to said second signal injection/extraction connection.
Claim 26
Dependent Claim
33 words
An antenna as set forth in claim 9, further including a first coaxial line coupled to said first signal injection/extraction connection and a second coaxial line coupled to said second signal injection/extraction connection.
Claim 27
Dependent Claim
33 words
An antenna as set forth in claim 10, further including a first coaxial line coupled to said first signal injection/extraction connection and a second coaxial line coupled to said second signal injection/extraction connection.
Claim 28
Dependent Claim
33 words
An antenna as set forth in claim 11, further including a first coaxial line coupled to said first signal injection/extraction connection and a second coaxial line coupled to said second signal injection/extraction connection.
Claim 29
Dependent Claim
33 words
An antenna as set forth in claim 12, further including a first coaxial line coupled to said first signal injection/extraction connection and a second coaxial line coupled to said second signal injection/extraction connection.
Claim 30
Dependent Claim
33 words
An antenna as set forth in claim 13 further including a first coaxial line coupled to said first signal injection/extraction connection and a second coaxial line coupled to said second signal injection/extraction connection.
Claim 31
Dependent Claim
33 words
An antenna as set forth in claim 14, further including a first coaxial line coupled to said first signal injection/extraction connection and a second coaxial line coupled to said second signal injection/extraction connection.
Claim 32
Dependent Claim
33 words
An antenna as set forth in claim 15 further including a first coaxial line coupled to said first signal injection/extraction connection and a second coaxial line coupled to said second signal injection/extraction connection.
Claim 33
Dependent Claim
33 words
An antenna as set forth in claim 16, further including a first coaxial line coupled to said first signal injection/extraction connection and a second coaxial line coupled to said second signal injection/extraction connection.
Claim 34
Dependent Claim
68 words
An antenna as set forth in claim 1 wherein said first plurality of antenna elements is disposed on one surface of said substrate, said second plurality of antenna elements is disposed on the opposite surface of said substrate, said third plurality of antenna elements is disposed on one surface of said substrate and said fourth plurality of antenna elements is disposed on the opposite surface of said substrate.
Claim 35
Dependent Claim
39 words
An antenna as set forth in claim 33 further including a first shorting pin coupling said first and second transmission lines at said feedpoint and a second shorting pin coupling said third and fourth transmission lines as said feedpoint.
Claim 36
Dependent Claim
47 words
An antenna as set forth in claim 33 further including a first microstrip disposed on said substrate coupling together said first and second transmission lines at said feedpoint and a second microstrip disposed on said substrate coupling together said third and fourth transmission lines at said feedpoint.
Claim 37
Dependent Claim
55 words
An antenna as set forth in claim 33, further including a first coaxial line coupled to said first signal injection/extraction connection, a second coaxial line coupled to said second signal injection/extraction connection, a third coaxial line coupled to said third signal injection/extraction connection and a fourth coaxial line coupled to said fourth signal injection/extraction connection.
Claim 38
Dependent Claim
55 words
An antenna as set forth in claim 34, further including a first coaxial line coupled to said first signal injection/extraction connection, a second coaxial line coupled to said second signal injection/extraction connection, a third coaxial line coupled to said third signal injection/extraction connection and a fourth coaxial line coupled to said fourth signal injection/extraction connection.
Claim 39
Dependent Claim
55 words
An antenna as set forth in claim 35, further including a first coaxial line coupled to said first signal injection/extraction connection, a second coaxial line coupled to said second signal injection/extraction connection, a third coaxial line coupled to said third signal injection/extraction connection and a fourth coaxial line coupled to said fourth signal injection/extraction connection.
Claim 40
Dependent Claim
170 words
An antenna which comprises: (a) an electrically insulating substrate having a perimeter; (b) an antenna pattern disposed on said substrate having a central feedpoint, a portion of said antenna pattern extending to said perimeter of said substrate, wherein said antenna pattern includes: (i) a first antenna element having a plurality of first regions, each of said first regions composed of first plural interconnected concentric sectors of circles of diminishing radius extending to said feedpoint, (ii) a second antenna element having a plurality of second regions, each of said second regions composed of second plural interconnected concentric sectors of circles of diminishing radius extending to said feedpoint, and (iii) an infinite balun on said substrate interconnecting said sectors of circles and said connection, (c) a signal injection/extraction connection coupled to said antenna pattern at said perimeter of said electrically insulating substrate; and (d) a transmission line coupled to said connection at a location on said antenna pattern remote from said central feedpoint and at said perimeter of said electrically insulating substrate.
Claim 41
Dependent Claim
170 words
An antenna which comprises: (a) an electrically insulating substrate having a perimeter; (b) an antenna pattern disposed on said substrate having a central feedpoint, a portion of said antenna pattern extending to said perimeter of said substrate, wherein said antenna pattern includes: (i) a first antenna element having a plurality of first regions, each of said first regions composed of first plural interconnected concentric sectors of circles of diminishing radius extending to said feedpoint, (ii) a second antenna element having a plurality of second regions, each of said second regions composed of second plural interconnected concentric sectors of circles of diminishing radius extending to said feedpoint, and (iii) an infinite balun on said substrate interconnecting said sectors of circles and said connection, (c) a signal injection/extraction connection coupled to said antenna pattern at said perimeter of said electrically insulating substrate; and (d) a transmission line coupled to said connection at a location on said antenna pattern remote from said central feedpoint and at said perimeter of said electrically insulating substrate.
Claim 42
Dependent Claim
24 words
An antenna as set forth in claim 39 wherein said infinite balun is one of a microstrip, a stripline or a coaxial transmission line.
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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) | 1996-05-17 | 1996-11-16 | 1997-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-17 | 2000-11-16 | 2001-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-17 | 2004-11-16 | 2005-05-18 | $7700.00 | Window Closed / Lapsed |