Patent US3611389A successfully refreshed from Google Patents.
US3611389A
Expired / Lapsed
US
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Vor antenna
Assignee: International Standard Electric Corp
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Filing: 1970-01-09
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Granted: 1971-10-05
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Expires: 1990-01-09
Abstract
Abstract A VOR antenna construction using printed circuit techniques for the radiators as well as for the balun transformers. The rotating cardioid pattern is generated by the combination of a turnstile and a loop antenna fed independent with modulated sideband energy and carrier energy, respectively. The printed circuit loop antenna includes eight arcuate sections surrounding four printed circuit half-dipoles disposed in a cross configuration to form the turnstile antenna. The arcuate sections are all fed in balance from a central feed point by printed circuit slotted transformers. The VOR antenna may be enclosed in a polarization cage.
Inventors
- 👤 Erich Coors
- 👤 Kurt Tanzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:18
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/29; G; G01; G01S; G01S1/00; G01S1/02; H01Q1/00; H01Q1/36; H01Q1/38; H01Q21/06; H01Q21/20; H01Q21/24; H01Q21/26; H01Q9/00; H01Q9/04; H01Q9/16
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
182 words
A VOR antenna comprising: a turnstile antenna; and a loop antenna symmetrically arranged around said turnstile antenna; said turnstile antenna and said loop antenna including flat printed circuit components disposed on a common baseplate of insulating material; said turnstile antenna including a pair of dipoles orthogonally related; and each of said pair of dipoles including two dipoles halves disposed adjacent to/and spaced from a central region on said coMmon plate; and further including an arrangement to feed each of said dipole halves and said loop antenna simultaneously; said loop antenna includes four pairs of printed circuit arcuate segments symmetrically disposed about said turnstile antenna, adjacent ends of said arcuate segments of each pair of arcuate segments being disposed in spaced relation and diametrically opposite said adjacent ends of said arcuate segments of another pair of arcuate segments; and said arrangement includes printed circuit balun transformers disposed on said common plate, each of said transformers extending radially from said central region to said adjacent ends of one of said pairs of arcuate segments to feed energy to each of said pair of segments.
Claim 2
Dependent Claim
182 words
A VOR antenna comprising: a turnstile antenna; and a loop antenna symmetrically arranged around said turnstile antenna; said turnstile antenna and said loop antenna including flat printed circuit components disposed on a common baseplate of insulating material; said turnstile antenna including a pair of dipoles orthogonally related; and each of said pair of dipoles including two dipoles halves disposed adjacent to/and spaced from a central region on said coMmon plate; and further including an arrangement to feed each of said dipole halves and said loop antenna simultaneously; said loop antenna includes four pairs of printed circuit arcuate segments symmetrically disposed about said turnstile antenna, adjacent ends of said arcuate segments of each pair of arcuate segments being disposed in spaced relation and diametrically opposite said adjacent ends of said arcuate segments of another pair of arcuate segments; and said arrangement includes printed circuit balun transformers disposed on said common plate, each of said transformers extending radially from said central region to said adjacent ends of one of said pairs of arcuate segments to feed energy to each of said pair of segments.
Claim 3
Dependent Claim
18 words
An antenna according to claim 1, wherein each of said balun transformers includes a printed circuit slot transformer.
Claim 4
Dependent Claim
111 words
An antenna according to claim 1, wherein each of said dipole half includes at least a first printed circuit conductor disposed on one side of said common plate, a second printed circuit conductor disposed on the other side of said common plate in an overlying relation with said first conductor, and conductive elements extending through said common plate to conductively connect at least the corners of said first and second conductors; and further including a conductive bridge member to conductively connect said conductor on one side of said common plate of the two dipole halves forming each of said dipoles, said bridge members forming the feed point of said dipole halves.
Claim 5
Dependent Claim
129 words
An antenna according to claim 3, wherein each of said dipole halves includes a first printed circuit conductor disposed on one side of said common plate extending radially from said central region, a second printed circuit conductor disposed on said one side of said common plate spaced from and parallel to said first conductor, a third printed circuit conductor disposed on the other side of said common plate in an overlying relation with said first conductor, a fourth printed circuit conductor disposed on said other side of said common plate in an overlying relation with said second conductor, and conductive elements through said common plate to conductively connect at least the corners of said first and third conductors and at least the corners of said second and fourth conductors.
Claim 6
Dependent Claim
202 words
An antenna according to claim 4, wherein each of said balun transformer includes two conical conductive coatings, one of said conical coatings being disposed on one side of said common plate and the other of said conical coatings being disposed on the other side of said common plate in an overlying relation with said one of said conical coating, the input end of both said conical coatings being conductively connected to one another and the output ends of both said conical coatings being conductively connected to one another, a first additional member of insulating material having one side thereof in contact with said one of said conical coatings, a first additional conductive coating disposed on the other side of said first additional member in an overlying relation with said one of said conical coatings, a second additional member of insulating material having one side thereof in contact with said other of said conical coatings, a second additional conductive coating disposed on the other side of said second additional member in an overlying relation with said other of said conical coatings, and a conductive member connecting the output ends of both said conical coatings to one of said first and second additional coatings.
Claim 7
Dependent Claim
93 words
An antenna according to claim 5, further including a third additional member of insulating material having one side thereof in contact with said first additional coating, a third additional conductive coating disposed on the other side of said third additional member in an overlying relation with said first additional coating, a fourth additional member of insulating material having one side thereof in contact with said second additional coating, and a fourth additional conductive coating disposed on the other side of said fourth additional member in an overlying relation with said second additional coating.
Claim 8
Dependent Claim
24 words
An antenna according to claim 6, further including capacitive means coupled between said first and second additional coatings of each of said balun transformer.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |