US3386098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically short tower antenna with controlled base impedance
Assignee: Multronics Inc
•
Filing: 1965-10-23
•
Granted: 1968-05-28
•
Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 John H Mullaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:43
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
AN ANTENNA COMPRISING A FOLDED UNIPOLE HAVING A VERTICAL RADIATOR OF A LENGTH EQUAL TO A SMALL FRACTION OF THE OPERATING WAVELENGTH AND A FEED FOLD PARALLEL THERETO AND SPACED THEREFROM A SMALL FRACTION OF THE RADIATOR LENGTH, SAID RADIATOR AND FOLD BEING CONNECTED TOGETHER AT THEIR ENDS REMOTE FROM A GROUND PLANE FROM WHICH THE RADIATOR RISES; TOP LOADING CONDUCTORS EXTENDING CONEWISE, FROM THE CONNECTED ENDS OF SAID RADIATOR AND FOLD, TOWARDS THE GROUND PLANE, AND A SERIES CAPACITOR CONNECTED FROM THE DISTAL END OF EACH OF SAID TOP LOADING CONDUCTORS TO GROUND; SAID COMPONENTS BEING SO RELATED THAT AT THE OPERATING FREQUENCY THE POSITIVE REACTANCE COMPONENT DUE TO SAID FOLDED UNIPOLE REFERRED TO ITS FEED POINT IS SUBSTANTIALLY EQUAL IN MANITUDE BUT OF OPPOSITE SIGN RELATIVE TO THE COMBINED NEGATIVE REACTANCE COMPONENT DUE TO SAID TOP LOADING CONDUCTORS AND SAID CAPACITORS.
Claim 2
Dependent Claim
143 words
AN ANTENNA COMPRISING A FOLDED UNIPOLE HAVING A VERTICAL RADIATOR OF A LENGTH EQUAL TO A SMALL FRACTION OF THE OPERATING WAVELENGTH AND A FEED FOLD PARALLEL THERETO AND SPACED THEREFROM A SMALL FRACTION OF THE RADIATOR LENGTH, SAID RADIATOR AND FOLD BEING CONNECTED TOGETHER AT THEIR ENDS REMOTE FROM A GROUND PLANE FROM WHICH THE RADIATOR RISES; TOP LOADING CONDUCTORS EXTENDING CONEWISE, FROM THE CONNECTED ENDS OF SAID RADIATOR AND FOLD, TOWARDS THE GROUND PLANE, AND A SERIES CAPACITOR CONNECTED FROM THE DISTAL END OF EACH OF SAID TOP LOADING CONDUCTORS TO GROUND; SAID COMPONENTS BEING SO RELATED THAT AT THE OPERATING FREQUENCY THE POSITIVE REACTANCE COMPONENT DUE TO SAID FOLDED UNIPOLE REFERRED TO ITS FEED POINT IS SUBSTANTIALLY EQUAL IN MANITUDE BUT OF OPPOSITE SIGN RELATIVE TO THE COMBINED NEGATIVE REACTANCE COMPONENT DUE TO SAID TOP LOADING CONDUCTORS AND SAID CAPACITORS.
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) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |