US3836976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closely spaced orthogonal dipole array
Assignee: Raytheon Co
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Filing: 1973-04-19
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Granted: 1974-09-17
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Expires: 1993-04-19
Abstract
Abstract A broadband phased array antenna is shown wherein pairs of mutually orthogonal printed radiating elements, each one of such elements having a flared notch formed therein, are adapted to transmit or receive radio frequency energy having any one of a variety of polarizations.
Inventors
- 👤 J Ehrhardt
- 👤 T Smith
- 👤 G Monser
- 👤 G Hardie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:32
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/24; H01Q9/00; H01Q9/04; H01Q9/06; H01Q9/065
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
98 words
An antenna element comprising: a pair of planar radiating elements, one thereof disposed in a plane orthogonal to the other one thereof, the phase center of one of such planar radiating elements being separated from the phase center of the other one of such planar radiating elements by less than lambda /4 (where lambda is the operating wavelength of the antenna element), each one of such radiating elements including: a. a radio frequency feed line; and, b. a planar sheet of conducting material having a flared notch formed therein, the feed line being coupled across such flared notch.
Claim 2
Dependent Claim
98 words
An antenna element comprising: a pair of planar radiating elements, one thereof disposed in a plane orthogonal to the other one thereof, the phase center of one of such planar radiating elements being separated from the phase center of the other one of such planar radiating elements by less than lambda /4 (where lambda is the operating wavelength of the antenna element), each one of such radiating elements including: a. a radio frequency feed line; and, b. a planar sheet of conducting material having a flared notch formed therein, the feed line being coupled across such flared notch.
Claim 3
Dependent Claim
56 words
The antenna element recited in claim 1 wherein each one of such radiating elements includes: a planar substrate; and wherein the conducting material is deposited on a portion of such substrate, the flared notch formed therein having a narrow portion and a wide portion, the feed line being coupled across the narrow portion of such notch.
Claim 4
Dependent Claim
96 words
An antenna comprising: a linear array of antenna elements, each one thereof including: a pair of planar radiating elements, one of such pair of elements disposed in a plane orthogonal to the other one of such pair of elements, such pair of elements having phase centers coincident to less than lambda /4 (where lambda is the operating wavelength of the antenna), each one of such radiating elements including: a. a radio frequency feed line; and, a planar sheet of conducting material having a flared notch formed therein, the feed line being connected across such flared notch.
Claim 5
Dependent Claim
96 words
An antenna comprising: a linear array of antenna elements, each one thereof including: a pair of planar radiating elements, one of such pair of elements disposed in a plane orthogonal to the other one of such pair of elements, such pair of elements having phase centers coincident to less than lambda /4 (where lambda is the operating wavelength of the antenna), each one of such radiating elements including: a. a radio frequency feed line; and, a planar sheet of conducting material having a flared notch formed therein, the feed line being connected across such flared notch.
Claim 6
Dependent Claim
26 words
The antenna recited in claim 3 wherein each one of the pair of planar radiating elements has one planar radiating element disposed in a common plane.
Claim 7
Dependent Claim
30 words
The antenna recited in claim 4 including additionally a ground plane element common to the antenna elements and disposed orthogonal to each one of the pair of planar radiating elements.
Claim 8
Dependent Claim
56 words
The antenna recited in claim 3 wherein each one of such planar radiating elements includes a planar substrate; and, wherein the conducting material is deposited on a portion of such substrate, the flared notch formed therein having a Narrow portion and a wide portion, the feed line being coupled across the narrow portion of such notch.
Claim 9
Dependent Claim
28 words
The antenna recited in claim 6 wherein each one of the pair of planar radiating elements has one of the pair of substrates disposed in a common plane.
Claim 10
Dependent Claim
32 words
The antenna recited in claim 7 including additionally a ground plane element common to the antenna elements and disposed orthogonally to each one of the pair of substrates of the radiating elements.
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) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |