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US4656482A
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Wideband wing-conformal phased-array antenna having dielectric-loaded log-periodic electrically-small, folded monopole elements
Assignee: TDY Industries LLC
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Filing: 1985-10-11
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Granted: 1987-04-07
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Expires: 2005-10-11
Abstract
Abstract A compact, lightweight, wideband, wing-conformal phased-array antenna structure, the array elements of which are identical, log-periodic arrangements of electrically small, folded-monopole elements printed on both sides of a dielectric substrate. A significant reduction in the height of the array elements makes this array configuration feasible for many airborne applications.
Inventors
- 👤 Sheng Y. Peng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:02
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/28; H01Q1/286; H01Q1/287; H01Q11/00; H01Q11/02; H01Q11/10; H01Q21/00; H01Q21/06; H01Q21/061; H01Q21/067
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
122 words
A phase array antenna for the transmission and reception of multiple frequency electromagnetic signals which comprises: a first planar sheet of dielectric substrate; a plurality of monopole elements, each of said elements comprising: a first conductive strip bonded to one face of said first sheet, a second conductive strip bonded to the other face of said first sheet opposite said first strip; means for connecting a set of proximal ends of said first and second strips together across the thickness of said first sheet; a second planar sheet of dielectric substrate supporting said first sheet orthogonally; a feed line bonded to the surface of said second sheet; and means for connecting the free end of said first strip to said feed line.
Claim 2
Dependent Claim
122 words
A phase array antenna for the transmission and reception of multiple frequency electromagnetic signals which comprises: a first planar sheet of dielectric substrate; a plurality of monopole elements, each of said elements comprising: a first conductive strip bonded to one face of said first sheet, a second conductive strip bonded to the other face of said first sheet opposite said first strip; means for connecting a set of proximal ends of said first and second strips together across the thickness of said first sheet; a second planar sheet of dielectric substrate supporting said first sheet orthogonally; a feed line bonded to the surface of said second sheet; and means for connecting the free end of said first strip to said feed line.
Claim 3
Dependent Claim
26 words
The structure of claim 1 wherein the length of each of said first strip is equal to one-eighth wavelength of the signal corresponding to said monopole.
Claim 4
Dependent Claim
22 words
The strucuture of claim 2 wherein said monopole elements are arranged in a log-periodic array over the surface of said first sheet.
Claim 5
Dependent Claim
17 words
The structure of claim 3 wherein said second planar sheet supports a plurality of log-periodic array sheets.
Claim 6
Dependent Claim
38 words
The structure of claim 3 which further comprises a ground plane bonded to one of the surfaces of said second sheet opposite said feed-line, and means for connecting the free end of said second strip to said plane.
Claim 7
Dependent Claim
30 words
The structure of claim 3 wherein the edge of said first sheet opposite said second sheet define a slope corresponding to the connected ends of said first and second strips.
Claim 8
Dependent Claim
14 words
The structure of claim 6 shaped and dimensioned for installation into a plane wing.
Claim 9
Dependent Claim
28 words
The structure of claim 7 which further comprises a third sheet mounted orthogonally to said first and second sheets and abutting the higher end of said first sheets.
Claim 10
Dependent Claim
37 words
The structure of claim 3 wherein said feed line comprises a meandering microstrip transmission line having quarter wavelength stubs connected a quarter-wavelength past the point of contact between said transmission line and each of said first strip.
Claim 11
Dependent Claim
19 words
The structure of claim 9 wherein said second strip is shaped and dimensioned to act as a tuning element.
References Cited (Backward Citations)
US4296416A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |