US3230539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear array coupled to strip transmission line with variable capacitance diodes for scanning
Assignee: Individual
•
Filing: 1962-02-12
•
Granted: 1966-01-18
•
Expires: 1982-02-12
Abstract
No abstract record available.
Inventors
- 👤 Allan C Schell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:12
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/44; H01Q3/443
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
AN ANTENNA SYSTEM WITH VARIABLE DIRECTIONAL SCANNING CHARATERISTICS COMPRISING A STRIP TRANSMISSION LINE HAVING A DOUBLE GROUND PLANE WITH A CENTER PLATE DISPOSED THEREBETWEEN, VOLTAGE VARIABLE CAPACITANCE ELEMENTS EVENLY SPACED IN SAID STRIP TRANSMISSION LINE, EACH OF SAID CAPACITANCE ELEMENTS BEING CONNECTED BETWEEN ONE OF SAID GROUND PLANES AND SAID CENTER PLATE, A MULTIPLICITY OF SELECTIVELY SPACED ANENNA RADIATING ELEMENTS CAPACITIVELY COUPLED TO SAID CENTER PLATE, EACH OF SAID RADIATING ELEMENTS EXTENDING OUT VERTICALLY FROM SAID OTHER GROUND PLANE, AND MEANS TO SIMULTANEOUSLY VARY THE VOLTAGE APPLIED TO SAID VARIABLE CAPACITANCE ELEMENTS.
Claim 2
Dependent Claim
92 words
AN ANTENNA SYSTEM WITH VARIABLE DIRECTIONAL SCANNING CHARATERISTICS COMPRISING A STRIP TRANSMISSION LINE HAVING A DOUBLE GROUND PLANE WITH A CENTER PLATE DISPOSED THEREBETWEEN, VOLTAGE VARIABLE CAPACITANCE ELEMENTS EVENLY SPACED IN SAID STRIP TRANSMISSION LINE, EACH OF SAID CAPACITANCE ELEMENTS BEING CONNECTED BETWEEN ONE OF SAID GROUND PLANES AND SAID CENTER PLATE, A MULTIPLICITY OF SELECTIVELY SPACED ANENNA RADIATING ELEMENTS CAPACITIVELY COUPLED TO SAID CENTER PLATE, EACH OF SAID RADIATING ELEMENTS EXTENDING OUT VERTICALLY FROM SAID OTHER GROUND PLANE, AND MEANS TO SIMULTANEOUSLY VARY THE VOLTAGE APPLIED TO SAID VARIABLE CAPACITANCE ELEMENTS.
References Cited (Backward Citations)
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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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |