US3271775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertically polarized log-periodic antenna
Assignee: Commscope Technologies LLC
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Filing: 1963-07-25
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Granted: 1966-09-06
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Expires: 1983-07-25
Abstract
No abstract record available.
Inventors
- 👤 Richard F H Yang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:55
CPC Classifications
H; H01; H01Q; H01Q11/00; H01Q11/02; H01Q11/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
89 words
A LOG-PERIODIC ANTENNA HAVING: (A) AN OPEN-WIRE TRANSMISSION-LINE PAIR, (B) VERTICALLY DISPOSED CONDUCTOR ELEMENTS OF LOGPERIODIC DIMENSIONS AND SPACING EXTENDING UPWARD ALONG THE TRANSMISSION-LINE PAIR, (C) ALTERNATE UPWARDLY EXTENDING CONDUCTOR ELEMENTS BEING CONNECTED TO RESPECTIVE MEMBERS OF THE TRANSMISSION LINE AND SAID UPWARDLY EXTENDING ELEMENTS BEING THE SOLE VERTICALLY DISPOSED ELEMENTS, (D) AND CONDUCTOR ELEMENTS OF LOG-PERIODIC DIMENSIONS AND SPACING EACH EXTENDING IN ONLY ONE AT LEAST PARTIALLY HORIZONTAL DIRECTION FROM THE TRANSMISSIONLINE PAIR, THE HORIZONTAL COMPONENT OF THE SAID OUTWARD EXTENSION OF SUCCESSIVE ELEMENTS BEING ALTERNATED IN DIRECTION,
Claim 2
Dependent Claim
89 words
A LOG-PERIODIC ANTENNA HAVING: (A) AN OPEN-WIRE TRANSMISSION-LINE PAIR, (B) VERTICALLY DISPOSED CONDUCTOR ELEMENTS OF LOGPERIODIC DIMENSIONS AND SPACING EXTENDING UPWARD ALONG THE TRANSMISSION-LINE PAIR, (C) ALTERNATE UPWARDLY EXTENDING CONDUCTOR ELEMENTS BEING CONNECTED TO RESPECTIVE MEMBERS OF THE TRANSMISSION LINE AND SAID UPWARDLY EXTENDING ELEMENTS BEING THE SOLE VERTICALLY DISPOSED ELEMENTS, (D) AND CONDUCTOR ELEMENTS OF LOG-PERIODIC DIMENSIONS AND SPACING EACH EXTENDING IN ONLY ONE AT LEAST PARTIALLY HORIZONTAL DIRECTION FROM THE TRANSMISSIONLINE PAIR, THE HORIZONTAL COMPONENT OF THE SAID OUTWARD EXTENSION OF SUCCESSIVE ELEMENTS BEING ALTERNATED IN DIRECTION,
Claim 3
Dependent Claim
88 words
IN COMBINATION WITH AN ANTENNA OF THE TYPE HAVING A PAIR OF CONDUCTORS EXTENDING ALONG ITS LENGTH AND FORMING AN OPEN-WIRE BALANCED TRANSMISSION LINE, AND RADIATING ELEMENTS SPACED ALONG THE LINE AND CONNECTED TO THE RESPECTTIVE MEMBERS OF THE PAIR, ADDITIONAL CONDUCTORS EXTENDING PARALLEL WITH THE TRANSMISSION LINE PAIR AND MEANS AT EACH POINT OF CONNECTION OF A MEMBER TO THE RADIATING ELEMENTS TO SELECTIVELY CONNECT AND DISCONNECT ONE OF THE ADDITIONAL CONDUCTORS AND ONE OF THE MEMBERS OF THE PAIR TO ALTER THE IMPEDANCE OF THE ANTENNA.
Claim 4
Dependent Claim
88 words
IN COMBINATION WITH AN ANTENNA OF THE TYPE HAVING A PAIR OF CONDUCTORS EXTENDING ALONG ITS LENGTH AND FORMING AN OPEN-WIRE BALANCED TRANSMISSION LINE, AND RADIATING ELEMENTS SPACED ALONG THE LINE AND CONNECTED TO THE RESPECTTIVE MEMBERS OF THE PAIR, ADDITIONAL CONDUCTORS EXTENDING PARALLEL WITH THE TRANSMISSION LINE PAIR AND MEANS AT EACH POINT OF CONNECTION OF A MEMBER TO THE RADIATING ELEMENTS TO SELECTIVELY CONNECT AND DISCONNECT ONE OF THE ADDITIONAL CONDUCTORS AND ONE OF THE MEMBERS OF THE PAIR TO ALTER THE IMPEDANCE OF THE ANTENNA.
References Cited (Backward Citations)
CA674128A
Cited
US3013268A
Cited
US2981951A
Cited
US3113316A
Cited
US3165748A
Cited
US3179943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |