Patent US3765024A successfully refreshed from Google Patents.
US3765024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna array with pattern compensation during scanning
Assignee: Lignes Telegraphiques et Telephoniques LTT SA
•
Filing: 1972-04-20
•
Granted: 1973-10-09
•
Expires: 1992-04-20
Abstract
Abstract An array is made of elemental radiators with an adjustable aperture controlled by a magnetizing field established within a magnetic section of the radiator. The broadening of the radiation pattern resulting from large amplitude scanning is compensated through aperture control of the individual radiators patterns in the array by means of the magnetizing field within said radiator.
Inventors
- 👤 B Chiron
- 👤 L Duffau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:46
CPC Classifications
H; H01; H01Q; H01Q25/00; H01Q25/002; H01Q3/00; H01Q3/44
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
165 words
An electronically scannable antenna array comprising: a plurality of elemental radiating units each having a dielectric non-magnetic radiating unit having an axis of directivity, magnetic dielectric means integral with said dielectric radiating unit and symmetrically arranged around said axis of directivity; magnetizing means for said magnetic means; means affording connection of a D. C. current source to said magnetizing means in order to vary the aperture value of the antenna without changing the directivity in accordance with the magnitude of current supplied to said magnetizing means; a common feed source for said radiating units; a controllable phase shifting means between said source and said radiating units; a control unit for said phase shifting means; and means for controlling the D. C. current supplied to said magnetizing means of each elemental radiating unit in order to vary the aperture value of the elemental beam radiated by said unit so as to compensate for the aperture variation of the beam radiated by said array due to scanning.
Claim 2
Dependent Claim
165 words
An electronically scannable antenna array comprising: a plurality of elemental radiating units each having a dielectric non-magnetic radiating unit having an axis of directivity, magnetic dielectric means integral with said dielectric radiating unit and symmetrically arranged around said axis of directivity; magnetizing means for said magnetic means; means affording connection of a D. C. current source to said magnetizing means in order to vary the aperture value of the antenna without changing the directivity in accordance with the magnitude of current supplied to said magnetizing means; a common feed source for said radiating units; a controllable phase shifting means between said source and said radiating units; a control unit for said phase shifting means; and means for controlling the D. C. current supplied to said magnetizing means of each elemental radiating unit in order to vary the aperture value of the elemental beam radiated by said unit so as to compensate for the aperture variation of the beam radiated by said array due to scanning.
Claim 3
Dependent Claim
28 words
An electronically scannable antenna array as defined by claim 1 in which said phase shifting means are ferrimagnetic phase shifters and said control unit is a current generator.
Claim 4
Dependent Claim
32 words
An electronically scannable antenna array as defined by claim 1 in which said elemental radiating units are Luneberg-type antennas having a ferrimagnetic core and at least one dielectric shell surrounding said core.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |