US3573831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proximity fuze microstrip antenna
Assignee: Avco Corp
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Filing: 1969-04-28
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Granted: 1971-04-06
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Expires: 1989-04-28
Abstract
Abstract An energy radiator for use in small projectiles is disclosed. Effective wave propagation is achieved from the radiator by propagating energy along two conductors, one of which is placed above the other as a parasitical element in which the voltage node is displaced approximately 0* with respect to the voltage node of the first conductor.
Inventors
- 👤 Gary L Forbes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:15
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/26; H01Q9/265; H01Q9/06; H01Q9/065
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
119 words
RADIATOR OF PARTICULAR UTILITY IN A PROXIMITY FUZE COMPRISING, IN COMBINATION: A HALF-WAVE LINE OF THE TYPE COMPRISING A UNITARY ASSEMBLY OF A LOSSY GROUND PLANE AND A DIELECTRIC MOUNTING AND A FIRST CONDUCTOR IMBEDDED IN THE DIELECTRIC; AND A PARASITIC ELEMENT COMPRISING A SECOND CONDUCTOR CLOSELY SPACED OUTWARDLY FROM SAID FIRST CONDUCTOR BY AN AMOUNT ON THE ORDER OF 1/100 OF THE WAVE LENGTH OF THE ENERGY TO BE RADIATED, SAID LINE AND SECOND CONDUCTOR BEING SO PROPORTIONED AND DISPOSED THAT HIGH FREQUENCY ENERGY APPLIED TO A FEED POINT ON SAID FIRST CONDUCTOR ELECTRICALLY EXCITES THE FIRST CONDUCTOR AND THE PARASITIC ELEMENT IN THE SAME PHASE RELATIONSHIP; AND MEANS FOR APPLYING HIGH FREQUENCY ENERGY TO SAID FEED POINT.
Claim 2
Dependent Claim
119 words
RADIATOR OF PARTICULAR UTILITY IN A PROXIMITY FUZE COMPRISING, IN COMBINATION: A HALF-WAVE LINE OF THE TYPE COMPRISING A UNITARY ASSEMBLY OF A LOSSY GROUND PLANE AND A DIELECTRIC MOUNTING AND A FIRST CONDUCTOR IMBEDDED IN THE DIELECTRIC; AND A PARASITIC ELEMENT COMPRISING A SECOND CONDUCTOR CLOSELY SPACED OUTWARDLY FROM SAID FIRST CONDUCTOR BY AN AMOUNT ON THE ORDER OF 1/100 OF THE WAVE LENGTH OF THE ENERGY TO BE RADIATED, SAID LINE AND SECOND CONDUCTOR BEING SO PROPORTIONED AND DISPOSED THAT HIGH FREQUENCY ENERGY APPLIED TO A FEED POINT ON SAID FIRST CONDUCTOR ELECTRICALLY EXCITES THE FIRST CONDUCTOR AND THE PARASITIC ELEMENT IN THE SAME PHASE RELATIONSHIP; AND MEANS FOR APPLYING HIGH FREQUENCY ENERGY TO SAID FEED POINT.
Claim 3
Dependent Claim
38 words
The combination in accordance with claim 1 in which the second conductor is a parasitic half-wave element and in which both ends of said parasitic element are open circuited, whereby the combination comprises essentially two open-circuited half-wave lines.
Claim 4
Dependent Claim
90 words
The combination in accordance with claim 1 in which the line is arranged in a first circular configuration, in which the second conductor is a half-wave element arranged in a circular configuration of slightly larger diameter than the first configuration, and in which the boundary conditions at the ends of both lines and the feed point are arranged such that the voltage nodes of the first conductor and second conductor are electrically displaced by 0*; and means for electrically connecting the midpoint of the first conductor to said ground plane.
Claim 5
Dependent Claim
96 words
A radiator comprising, in combination: a resonant line of the type comprising a unitary assembly of a conductive ground plane and a dielectric mounting and a first conductor imbedded in the dielectric; and a parasitic comprising a second resonant line closely spaced outwardly from said first conductor and carried by said dielectric, said first line being arranged in a circular configuration and said parasitic element being concentric thereto, said first-mentioned resonant line and said parasitic element being spaced by an amount of the order of 1/100 of the wave length of the energy to be radiated.
Claim 6
Dependent Claim
96 words
A radiator comprising, in combination: a resonant line of the type comprising a unitary assembly of a conductive ground plane and a dielectric mounting and a first conductor imbedded in the dielectric; and a parasitic comprising a second resonant line closely spaced outwardly from said first conductor and carried by said dielectric, said first line being arranged in a circular configuration and said parasitic element being concentric thereto, said first-mentioned resonant line and said parasitic element being spaced by an amount of the order of 1/100 of the wave length of the energy to be radiated.
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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) | 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 |