Patent US3956166A successfully refreshed from Google Patents.
Patent US6043785A successfully refreshed from Google Patents.
US6043785A
Expired / Lapsed
US
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Broadband fixed-radius slot antenna arrangement
Assignee: Radio Frequency Systems Inc
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Filing: 1998-11-30
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Granted: 2000-03-28
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Expires: 2018-11-30
Abstract
Abstract A fixed radius tapered slot antenna (100) formed a dielectric substrate (10) with an electrically conductive layer (14) on one side. The slot is defined by two hemispherical shaped elements (12, 13). A common base (15) is also formed on the conductive layer behind the hemispherical shaped members. Preferably, a microstrip feedline (16) is formed on the side of the dielectric substrate to electromagnetically couple to the balun (18) adjacent the narrow end of the tapered slot. A contiguous array (102) of fixed radius tapered slot antennas (100) can be made on the same conductive layer of a dielectric layer. A reflector (30) can be integrated with the antenna array to improve the radiation pattern. The fixed radius tapered slot antenna has been proven to out-perform an exponentially tapered slot or Vivaldi antenna.
Inventors
- 👤 Ronald A. Marino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:30
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/246; H01Q13/00; H01Q13/08; H01Q13/085; H01Q21/00; H01Q21/06; H01Q21/08
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
75 words
A broadband tapered slot antenna arrangement comprising: (a) at least one antenna element including an insulating substrate with an electrically conductive layer on one side thereof, said layer having formed therein a tapered slot formed by adjacent hemispherical shaped members, each extending outward from a common base of said conductive layer, and having a balun formed adjacent said base in proximity to the hemispherical shaped members; and (b) a feedline electromagnetically coupled to the balun.
Claim 2
Dependent Claim
75 words
A broadband tapered slot antenna arrangement comprising: (a) at least one antenna element including an insulating substrate with an electrically conductive layer on one side thereof, said layer having formed therein a tapered slot formed by adjacent hemispherical shaped members, each extending outward from a common base of said conductive layer, and having a balun formed adjacent said base in proximity to the hemispherical shaped members; and (b) a feedline electromagnetically coupled to the balun.
Claim 3
Dependent Claim
24 words
The slot antenna arrangement of claim 1 wherein the feedline is formed on another side of the insulating substrate, opposite to the tapered slot.
Claim 4
Dependent Claim
27 words
The slot antenna arrangement of claim 1 further comprising an electrically conductive reflector in the proximity of said at least one antenna element adjacent said common base.
Claim 5
Dependent Claim
19 words
The slot antenna arrangement of claim 1 further comprising a radome covering over said at least one antenna element.
Claim 6
Dependent Claim
80 words
An antenna array comprising: a plurality of coplanar antenna elements formed on one side of a dielectric substrate having thereon an electrically conductive layer, wherein each antenna element comprises a tapered slot defined by adjacent conductive elements each having a fixed radius of curvature; an electrically conductive network formed on the other side of the dielectric substrate opposite to the conductive elements for providing a plurality of feedlines for electromagnetically coupling each tapered slot to a feedline at a balun.
Claim 7
Dependent Claim
80 words
An antenna array comprising: a plurality of coplanar antenna elements formed on one side of a dielectric substrate having thereon an electrically conductive layer, wherein each antenna element comprises a tapered slot defined by adjacent conductive elements each having a fixed radius of curvature; an electrically conductive network formed on the other side of the dielectric substrate opposite to the conductive elements for providing a plurality of feedlines for electromagnetically coupling each tapered slot to a feedline at a balun.
Claim 8
Dependent Claim
30 words
The antenna array of claim 5 wherein the radius of curvature of the conductive elements is substantially equal to one eighth of the lowest operating frequency of the antenna array.
Claim 9
Dependent Claim
21 words
The antenna array of claim 5 wherein the radius of curvature is greater than one eighth of the lowest operating frequency.
Claim 10
Dependent Claim
21 words
The antenna array of claim 5 wherein the radius of curvature is smaller than one eighth of the lowest operating frequency.
Claim 11
Dependent Claim
29 words
The antenna array of claim 5 wherein the spacing between two adjacent tapered slots is substantially equal to one half of the lowest operating frequency of the antenna array.
Claim 12
Dependent Claim
28 words
The antenna array of claim 5 wherein the spacing between two adjacent tapered slots is greater than one half of the lowest operating frequency of the antenna array.
Claim 13
Dependent Claim
28 words
The antenna array of claim 5 wherein the spacing between two adjacent tapered slots is smaller than one half of the lowest operating frequency of the antenna array.
Claim 14
Dependent Claim
21 words
The antenna array of claim 5 wherein the spacing between two adjacent tapered slots is substantially uniform throughout the antenna array.
Claim 15
Dependent Claim
22 words
The antenna array of claim 5 wherein at least one spacing between two adjacent tapered slots is greater than the other spacings.
Claim 16
Dependent Claim
24 words
The antenna array of claim 5 wherein at least one spacing between two adjacent tapered slots is smaller than at least one other spacing.
Claim 17
Dependent Claim
64 words
An antenna configuration to be used in a slot antenna element formed on an electrically conductive layer attached to an insulating substrate comprising two hemispherical shaped members formed on said conductive layer for defining a tapered slot having a fixed radius of curvature along the boundaries of the slot, said hemispherical shaped members each extending outward from a common base of said conductive layer.
Claim 18
Dependent Claim
64 words
An antenna configuration to be used in a slot antenna element formed on an electrically conductive layer attached to an insulating substrate comprising two hemispherical shaped members formed on said conductive layer for defining a tapered slot having a fixed radius of curvature along the boundaries of the slot, said hemispherical shaped members each extending outward from a common base of said conductive layer.
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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) | 2003-03-28 | 2003-09-27 | 2004-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-03-28 | 2007-09-27 | 2008-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-03-28 | 2011-09-27 | 2012-03-28 | $7700.00 | Window Closed / Lapsed |