US3218645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endfire array having vertically and horizontally spaced parasitic arrays
Assignee: Individual
•
Filing: 1963-06-25
•
Granted: 1965-11-16
•
Expires: 1983-06-25
Abstract
No abstract record available.
Inventors
- 👤 Hermann W Ehrenspeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:17
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A THREE-DIMENSIONAL ANTENNA ARRAY COMPRISING A MAIN CENTER ARRAY BEING EXCITED BY A SINGLE FEED AND HAVING A VIRTUAL APERTURE PREDETERMINED BY THE CHARACTERISTICS OF SAID MAIN ARRAY, A MULTIPLICITY OF PARASITIC ARRAYS, EACH OF SAID ARRAYS HAVING ENERGY COUPLED THERETO EXCLUSIVELY BY WAY OF SAID MAIN CENTER ARRAY, AT LEAST ONE OF SAID PARASITIC ARRAYS BEING HORIZONTALLY DISPLACED FROM SAID MAIN ARRAY AND AT LEAST ONE OTHER OF SAID PARASITIC ARRAYS BEING DISPLACED VERTICALLY FROM SAID MAIN ARRAY, SAID HORIZONTALLY AND VERTICALLY DISPLACED ARRAYS OPERATING TO MODIFY SAID VIRTUAL APERTURE IN THE HORIZONTAL AND VERTICAL DIRECTION, RESPECTIVELY, TO OBTAIN INCREASED GAIN BY NARROWING THE BEAM PATTERN THEREFROM.
Claim 2
Dependent Claim
108 words
A THREE-DIMENSIONAL ANTENNA ARRAY COMPRISING A MAIN CENTER ARRAY BEING EXCITED BY A SINGLE FEED AND HAVING A VIRTUAL APERTURE PREDETERMINED BY THE CHARACTERISTICS OF SAID MAIN ARRAY, A MULTIPLICITY OF PARASITIC ARRAYS, EACH OF SAID ARRAYS HAVING ENERGY COUPLED THERETO EXCLUSIVELY BY WAY OF SAID MAIN CENTER ARRAY, AT LEAST ONE OF SAID PARASITIC ARRAYS BEING HORIZONTALLY DISPLACED FROM SAID MAIN ARRAY AND AT LEAST ONE OTHER OF SAID PARASITIC ARRAYS BEING DISPLACED VERTICALLY FROM SAID MAIN ARRAY, SAID HORIZONTALLY AND VERTICALLY DISPLACED ARRAYS OPERATING TO MODIFY SAID VIRTUAL APERTURE IN THE HORIZONTAL AND VERTICAL DIRECTION, RESPECTIVELY, TO OBTAIN INCREASED GAIN BY NARROWING THE BEAM PATTERN THEREFROM.
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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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |