Patent US5841405A successfully refreshed from Google Patents.
US5841405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Octave-band antennas for impulse radios and cellular phones
Assignee: Raytheon Co
•
Filing: 1996-04-23
•
Granted: 1998-11-24
•
Expires: 2016-04-23
Abstract
Abstract An omnidirectional antenna structure that includes oppositely facing, parallel first and second planar dipole arrays (11, 12), each dipole array including side by side substantially identically shaped planar dipole elements (110) having expanded shape dipole wings (51c, 52c). Also disclosed is a sectorial coverage antenna that includes a single planar array of side by side substantially identically shaped planar dipole elements having expanded shape dipole wings.
Inventors
- 👤 J. J. Lee
- 👤 Stan W. Livingston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:48
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/29; H01Q21/293; H01Q25/00; H01Q25/005; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
377 words
An antenna comprising: a first planar array of N side by side substantially identical first expanded shape dipole elements, each first expanded shape dipole element including a pair of symmetrical planar conductors that extend away from feed ends of the planar conductors and having facing edges that diverge away from each other with distance from the feed ends along a central axis to form a radiation aperture between the facing edges, said symmetrical planar conductors including (a) a pair of transition section conductors that extend away from the feed ends and (b) a pair of expanded shape dipole wing conductors that extend from the transition section conductors and which have a lateral extent that is greater than a lateral extent of the pair of transition section conductors; said first expanded shape dipole elements being arranged with respective central axes parallel to each other and with the radiation apertures facing in a first direction; a second planar array of N side by side substantially identical second expanded shape dipole elements which are substantially identical to said first substantially identical first expanded shape dipole elements, each second expanded dipole element including a pair of symmetrical planar conductors that extend away from feed ends of the planar conductors and having facing edges that diverge away from each other with distance from the feed ends along a central axis to form a radiation aperture between the facing edges, said symmetrical planar conductors including (b) a pair of transition section conductors that extend away from the feed ends and (b) a pair of expanded shape dipole wing conductors that extend from the transition section conductors and which have a lateral extent that is greater than a lateral extent of the pair of transition section conductors; said second expanded shape dipole elements being arranged with respective central axes being parallel and with the radiation apertures facing in a second direction that is opposite said first direction; said first planar array and said second planar array being parallel to each other and positioned such that each phase center of the first planar array and a corresponding phase center of the second planar array is on a line that is orthogonal to the planar extent of the first planar array and the second planar array.
Claim 2
Dependent Claim
377 words
An antenna comprising: a first planar array of N side by side substantially identical first expanded shape dipole elements, each first expanded shape dipole element including a pair of symmetrical planar conductors that extend away from feed ends of the planar conductors and having facing edges that diverge away from each other with distance from the feed ends along a central axis to form a radiation aperture between the facing edges, said symmetrical planar conductors including (a) a pair of transition section conductors that extend away from the feed ends and (b) a pair of expanded shape dipole wing conductors that extend from the transition section conductors and which have a lateral extent that is greater than a lateral extent of the pair of transition section conductors; said first expanded shape dipole elements being arranged with respective central axes parallel to each other and with the radiation apertures facing in a first direction; a second planar array of N side by side substantially identical second expanded shape dipole elements which are substantially identical to said first substantially identical first expanded shape dipole elements, each second expanded dipole element including a pair of symmetrical planar conductors that extend away from feed ends of the planar conductors and having facing edges that diverge away from each other with distance from the feed ends along a central axis to form a radiation aperture between the facing edges, said symmetrical planar conductors including (b) a pair of transition section conductors that extend away from the feed ends and (b) a pair of expanded shape dipole wing conductors that extend from the transition section conductors and which have a lateral extent that is greater than a lateral extent of the pair of transition section conductors; said second expanded shape dipole elements being arranged with respective central axes being parallel and with the radiation apertures facing in a second direction that is opposite said first direction; said first planar array and said second planar array being parallel to each other and positioned such that each phase center of the first planar array and a corresponding phase center of the second planar array is on a line that is orthogonal to the planar extent of the first planar array and the second planar array.
Claim 3
Dependent Claim
46 words
The antenna of claim 1 wherein said first expanded shape dipole elements comprise conductors symmetrically formed on opposite sides of a first planar dielectric substrate, and wherein said second expanded shape dipole elements comprise conductors symmetrically formed on opposite sides of a second planar dielectric substrate.
Claim 4
Dependent Claim
27 words
The antenna of claim 1 wherein each pair of expanded shape dipole wing conductors has a lateral extent that is approximately one-quarter of a wavelength at midband.
References Cited (Backward Citations)
US3747114A
Cited
US3887925A
Cited
US4644361A
Cited
US4978965A
Cited
US5519408A
Cited
US5428364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-11-23 | 2002-05-25 | 2002-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-23 | 2006-05-25 | 2006-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-23 | 2010-05-25 | 2010-11-24 | $7700.00 | Window Closed / Lapsed |