US3573832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uhf television antenna
Assignee: RCA Licensing Corp
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Filing: 1969-09-25
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Granted: 1971-04-06
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Expires: 1989-09-25
Abstract
Abstract A UHF television band antenna includes two or more conductive loops, at least one of which is broken and is provided with terminals adapted for connection to a television receiver. One of the loops has a perimeter equal to one wavelength at a frequency within the UHF band. The loops are positioned and interconnected in such a fashion that no subloop, formed by unbroken lengths of wires defining two or more of said loops, has a perimeter equal to the wavelength corresponding to any frequency within the UHF band.
Inventors
- 👤 John D Callaghan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:15
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/16; H01Q19/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
147 words
An antenna for intercepting signals in the UHF television band comprising: a plurality of loops of electrically conductive material, said loops having different perimeter sizes; at least one of said loops being broken at one portion to form distal ends, said one loop having a perimeter substantially equal to a wavelength corresponding to a frequency within the UHF television band and having spaced points on said conductive material in physical contact with spaced points on another of said loops, a pair of said distal ends providing a means for connection of said antenna to a receiver; short circuit means connecting said one loop at said spaced points removed from said distal ends to said other of said loops such that none of the subloops resulting from the connections of said loops has a perimeter equal to a wavelength corresponding to any frequency within the UHF television band.
Claim 2
Dependent Claim
147 words
An antenna for intercepting signals in the UHF television band comprising: a plurality of loops of electrically conductive material, said loops having different perimeter sizes; at least one of said loops being broken at one portion to form distal ends, said one loop having a perimeter substantially equal to a wavelength corresponding to a frequency within the UHF television band and having spaced points on said conductive material in physical contact with spaced points on another of said loops, a pair of said distal ends providing a means for connection of said antenna to a receiver; short circuit means connecting said one loop at said spaced points removed from said distal ends to said other of said loops such that none of the subloops resulting from the connections of said loops has a perimeter equal to a wavelength corresponding to any frequency within the UHF television band.
Claim 3
Dependent Claim
32 words
An antenna as defined in claim 1 in which some of the loops are directly joined at said spaced points by variation of the shapes whereby the loops are made to intersect.
Claim 4
Dependent Claim
31 words
An antenna as defined in claim 1 in which some of the loops are placed in respectively different but intersecting planes so that they may be electrically interconnected at said intersections.
Claim 5
Dependent Claim
128 words
An antenna for use with a UHF television receiver comprising: a plurality of loops of electrically conductive material each broken at one portion to form distal ends, said loops overlapping and in contact with each other at points spaced from said ends and each having a different perimeter, at least one such loop having a perimeter of one wavelength corresponding to a frequency within the UHF band; terminal means for attachment of at least one of the loops to a receiver; short circuit means interconnecting said loops at their distal ends and at said points spaced therefrom so that no subloops, formed by the joining of conductive material defining two or more loops, has a perimeter equal to a wavelength corresponding to any frequency within the UHF band.
Claim 6
Dependent Claim
128 words
An antenna for use with a UHF television receiver comprising: a plurality of loops of electrically conductive material each broken at one portion to form distal ends, said loops overlapping and in contact with each other at points spaced from said ends and each having a different perimeter, at least one such loop having a perimeter of one wavelength corresponding to a frequency within the UHF band; terminal means for attachment of at least one of the loops to a receiver; short circuit means interconnecting said loops at their distal ends and at said points spaced therefrom so that no subloops, formed by the joining of conductive material defining two or more loops, has a perimeter equal to a wavelength corresponding to any frequency within the UHF band.
Claim 7
Dependent Claim
31 words
An antenna as defined in claim 4 in which some of the loops are placed in respectively different but intersecting planes so that they may be electrically interconnected at said intersections.
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) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |