Patent US4547047A successfully refreshed from Google Patents.
Patent US3715759A successfully refreshed from Google Patents.
US3715759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unfurlable isotropic antenna
Assignee: United States Department of the Air Force
•
Filing: 1970-03-08
•
Granted: 1973-02-06
•
Expires: 1990-03-08
Abstract
Abstract The invention is a broadband isotropic antenna of the triorthogonal type. It is a randomly polarized antenna system that has particular application in satellites. The antenna consists of three independent antenna elements arranged in a mutually orthogonal configuration. Each of the elements is mounted on unfurlable partitions contained within an inflatable spherical enclosure.
Inventors
- 👤 F Esposito
- 👤 M Pallas
- 👤 R Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:59
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/24; H01Q1/00; H01Q1/08; H01Q1/081; H01Q1/42; H01Q1/428; Y; Y10; Y10S; Y10S343/00; Y10S343/02; Y10S52/00; Y10S52/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
191 words
A broadband isotropic antenna comprising first, second and third antenna elements, each said antenna element comprising first and second planar logarithmically periodic antenna subelements, said subelements being in orthogonal relationship and having a common major axis, the major axis of said first antenna element being in coincidence with the X-X axis of a rectangular coordinate system, the major axis of said second antenna element being in coincidence with the Y-Y axis of said rectangular coordinate system and the major axis of said third antenna element being in coincidence with the Z-Z axis of said rectangular coordinate system, said first, second and third antenna elements being centered at the center of said rectangular coordinate system, an inflatable enclosure member having flexible partitions disposed therein, said enclosure and partitions having geometries and organization adapted to give said enclosure a substantially spherical form wherein the planes of a rectangular coordinate system are defined by said partitions during the inflated condition of said enclosure, said logarithmically periodic antenna subelements being flexible material and disposed on said partitions, and first, second and third noise sources, each said antenna element being fed from a separate noise source.
Claim 2
Dependent Claim
191 words
A broadband isotropic antenna comprising first, second and third antenna elements, each said antenna element comprising first and second planar logarithmically periodic antenna subelements, said subelements being in orthogonal relationship and having a common major axis, the major axis of said first antenna element being in coincidence with the X-X axis of a rectangular coordinate system, the major axis of said second antenna element being in coincidence with the Y-Y axis of said rectangular coordinate system and the major axis of said third antenna element being in coincidence with the Z-Z axis of said rectangular coordinate system, said first, second and third antenna elements being centered at the center of said rectangular coordinate system, an inflatable enclosure member having flexible partitions disposed therein, said enclosure and partitions having geometries and organization adapted to give said enclosure a substantially spherical form wherein the planes of a rectangular coordinate system are defined by said partitions during the inflated condition of said enclosure, said logarithmically periodic antenna subelements being flexible material and disposed on said partitions, and first, second and third noise sources, each said antenna element being fed from a separate noise source.
Claim 3
Dependent Claim
191 words
A broadband isotropic antenna comprising first, second and third antenna elements, each said antenna element comprising first and second planar logarithmically periodic antenna subelements, said subelements being in orthogonal relationship and having a common major axis, the major axis of said first antenna element being in coincidence with the X-X axis of a rectangular coordinate system, the major axis of said second antenna element being in coincidence with the Y-Y axis of said rectangular coordinate system and the major axis of said third antenna element being in coincidence with the Z-Z axis of said rectangular coordinate system, said first, second and third antenna elements being centered at the center of said rectangular coordinate system, an inflatable enclosure member having flexible partitions disposed therein, said enclosure and partitions having geometries and organization adapted to give said enclosure a substantially spherical form wherein the planes of a rectangular coordinate system are defined by said partitions during the inflated condition of said enclosure, said logarithmically periodic antenna subelements being flexible material and disposed on said partitions, and first, second and third noise sources, each said antenna element being fed from a separate noise source.
Claim 4
Dependent Claim
191 words
A broadband isotropic antenna comprising first, second and third antenna elements, each said antenna element comprising first and second planar logarithmically periodic antenna subelements, said subelements being in orthogonal relationship and having a common major axis, the major axis of said first antenna element being in coincidence with the X-X axis of a rectangular coordinate system, the major axis of said second antenna element being in coincidence with the Y-Y axis of said rectangular coordinate system and the major axis of said third antenna element being in coincidence with the Z-Z axis of said rectangular coordinate system, said first, second and third antenna elements being centered at the center of said rectangular coordinate system, an inflatable enclosure member having flexible partitions disposed therein, said enclosure and partitions having geometries and organization adapted to give said enclosure a substantially spherical form wherein the planes of a rectangular coordinate system are defined by said partitions during the inflated condition of said enclosure, said logarithmically periodic antenna subelements being flexible material and disposed on said partitions, and first, second and third noise sources, each said antenna element being fed from a separate noise source.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |