Patent US5070339A successfully refreshed from Google Patents.
US5070339A
Expired / Lapsed
US
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Tapered-element array antenna with plural octave bandwidth
Assignee: Raytheon Co
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Filing: 1989-12-21
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Granted: 1991-12-03
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Expires: 2009-12-21
Abstract
Abstract An antenna for radiating electromagnetic power with plural octave bandwith is formed of an array of microstrip radiating elements each of which includes a microstrip conductor element spaced apart from a ground-plane element. A common ground-plane element is employed by all of the radiators in a row of the antenna, there being a plurality of the rows disposed parallel to each other. In each radiator, the microstrip conductor element is formed of an input section which is coupled to a feed, and an output section extending to an output end of the radiator for forming a radiating aperture of the radiator. In each output section, there is a two-dimensional enlargement of a cross-section of the radiator, one dimension of enlargement being parallel to the ground-plane element, and the other direction of enlargement being perpendicular to the ground-plane element. Enlargement in the direction parallel to the ground-plane element is accomplished by increasing the width of the conductor element. Enlargement in the direction perpendicular to the ground-plane element is accomplished by bending a portion of the conductor element away from the ground-plane element to provide for an inclination of the conductor element relative to the ground-plane element. Enlargement of the width may occur prior to or concurrently with enlargement of the dimension perpendicular to the ground-plane element.
Inventors
- 👤 Ruey S. Chu
- 👤 Nam S. Wong
- 👤 Ernie T. Ozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:28
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/08; H01Q13/085; H01Q17/00; H01Q17/001; H01Q21/00; H01Q21/06; H01Q21/061
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
214 words
A microstrip radiator comprising: an input end and an output end, and a ground-plane element extending from said input end to said output end; a microstrip conductor element extending lengthwise across said radiator from said input end to said output end and having an input section at said input end of said radiator and an output section at said output end of said radiator; a dielectric layer disposed contiguous said microstrip conductor element on a side of said microstrip conductor element opposite said ground-plane element to form an inverted microstrip with an air dielectric between said microstrip conductor element and said ground-plane element; and wherein said conductor element is spaced apart from said ground plane element; said input section of said conductor element is of uniform width and is disposed at a predetermined spacing parallel to said ground-plane element; said output section of said conductor element varies in width from a minimum width contiguous said input section to a larger width distant from said input section; and at least a part of said output section of said conductor element is oriented at a varying spacing relative to said ground-plane element to extend from said predetermined spacing to a larger spacing, said varying spacing increasing with increasing distance from said input end of said radiator.
Claim 2
Dependent Claim
214 words
A microstrip radiator comprising: an input end and an output end, and a ground-plane element extending from said input end to said output end; a microstrip conductor element extending lengthwise across said radiator from said input end to said output end and having an input section at said input end of said radiator and an output section at said output end of said radiator; a dielectric layer disposed contiguous said microstrip conductor element on a side of said microstrip conductor element opposite said ground-plane element to form an inverted microstrip with an air dielectric between said microstrip conductor element and said ground-plane element; and wherein said conductor element is spaced apart from said ground plane element; said input section of said conductor element is of uniform width and is disposed at a predetermined spacing parallel to said ground-plane element; said output section of said conductor element varies in width from a minimum width contiguous said input section to a larger width distant from said input section; and at least a part of said output section of said conductor element is oriented at a varying spacing relative to said ground-plane element to extend from said predetermined spacing to a larger spacing, said varying spacing increasing with increasing distance from said input end of said radiator.
Claim 3
Dependent Claim
38 words
A radiator according to claim 1 wherein said output section of said conductor element reaches a maximum width at a central portion of said output section of said conductor element distant from said output end of said radiator.
Claim 4
Dependent Claim
55 words
A radiator according to claim 2 wherein a further part of said output section of said conductor element is located adjacent said input section of said conductor element and is disposed at said predetermined spacing, and said output section of said conductor element reaches a maximum width in said further part of said output section.
Claim 5
Dependent Claim
30 words
A radiator according to claim 1 wherein said output section of said conductor element reaches a maximum width in said part of said output section oriented at the varying spacing.
Claim 6
Dependent Claim
22 words
A radiator according to claim 1 wherein all of said output section of said conductor element is oriented at said varying spacing.
Claim 7
Dependent Claim
55 words
A radiator according to claim 1 wherein a further part of said output section of said conductor element is located adjacent said input section of said conductor element and is disposed at said predetermined spacing, and said output section of said conductor element reaches a maximum width in said further part of said output section.
Claim 8
Dependent Claim
30 words
A radiator according to claim 1 wherein said output section of said conductor element reaches a maximum width in said part of said output section oriented at the varying spacing.
Claim 9
Dependent Claim
34 words
A radiator according to claim 7 further comprising an absorber of electromagnetic power disposed in said output section of said conductor element on a side of said conductor element opposite said ground plane element.
Claim 10
Dependent Claim
22 words
A radiator according to claim 1 wherein all of said output section of said conductor element is oriented at said varying spacing.
Claim 11
Dependent Claim
33 words
A radiator according to claim 9 further comprising an absorber of electromagnetic power disposed in said output section of said conductor element on a side of said conductor element opposite said ground plane.
Claim 12
Dependent Claim
267 words
An antenna comprising an array of radiators arranged in rows and in columns, there being a plurality of the radiators arranged side-by-side in each of said rows, there being a common ground-plane element in each of said rows, the radiators of each row sharing the common ground-plane element of the row; each of said radiators further comprising: an input end and an output end, and a ground-plane element extending from said input end to said output end; a microstrip conductor element extending lengthwise across said radiator from said input end to said output end and having an input section at said input end of said radiator and an output section at said output end of said radiator; a dielectric layer disposed contiguous said microstrip conductor element on a side of said microstrip conductor element opposite said ground-plane element to form an inverted microstrip with an air dielectric between said microstrip conductor element and said ground-plane element; and wherein said conductor element is spaced apart from said ground plane element; said input section of said conductor element is of uniform width and is disposed at a predetermined spacing parallel to said ground-plane element; said output section of said conductor element varies in width from a minimum width contiguous said input section to a larger width distant from said input section; and at least a part of said output section of said conductor element is oriented at a varying spacing relative to said ground-plane element to extend from said predetermined spacing to a larger spacing, said varying spacing increasing with increasing distance from said input end of said radiator.
Claim 13
Dependent Claim
267 words
An antenna comprising an array of radiators arranged in rows and in columns, there being a plurality of the radiators arranged side-by-side in each of said rows, there being a common ground-plane element in each of said rows, the radiators of each row sharing the common ground-plane element of the row; each of said radiators further comprising: an input end and an output end, and a ground-plane element extending from said input end to said output end; a microstrip conductor element extending lengthwise across said radiator from said input end to said output end and having an input section at said input end of said radiator and an output section at said output end of said radiator; a dielectric layer disposed contiguous said microstrip conductor element on a side of said microstrip conductor element opposite said ground-plane element to form an inverted microstrip with an air dielectric between said microstrip conductor element and said ground-plane element; and wherein said conductor element is spaced apart from said ground plane element; said input section of said conductor element is of uniform width and is disposed at a predetermined spacing parallel to said ground-plane element; said output section of said conductor element varies in width from a minimum width contiguous said input section to a larger width distant from said input section; and at least a part of said output section of said conductor element is oriented at a varying spacing relative to said ground-plane element to extend from said predetermined spacing to a larger spacing, said varying spacing increasing with increasing distance from said input end of said radiator.
Claim 14
Dependent Claim
30 words
An antenna according to claim 11 wherein the output section of one of said radiators is contiguous the output section of the next radiator in a row of said radiators.
Claim 15
Dependent Claim
30 words
A radiator according to claim 12 wherein said output section of said conductor element reaches a maximum width in said part of said output section oriented at the varying spacing.
Claim 16
Dependent Claim
34 words
A radiator according to claim 13 further comprising an absorber of electromagnetic power disposed in said output section of said conductor element on a side of said conductor element opposite said ground plane element.
Claim 17
Dependent Claim
22 words
A radiator according to claim 12 wherein all of said output section of said conductor element is oriented at said varying spacing.
Claim 18
Dependent Claim
33 words
A radiator according to claim 15 further comprising an absorber of electromagnetic power disposed in said output section of said conductor element on a side of said conductor element opposite said ground plane.
Claim 19
Dependent Claim
38 words
A radiator according to claim 11 wherein said output section of said conductor element reaches a maximum width at a central portion of said output section of said conductor element distant from said output end of said radiator.
Claim 20
Dependent Claim
55 words
A radiator according to claim 17 wherein a further part of said output section of said conductor element is located adjacent said input section of said conductor element and is disposed at said predetermined spacing, and said output section of said conductor element reaches a maximum width in said further part of said output section.
Claim 21
Dependent Claim
30 words
A radiator according to claim 11 wherein said output section of said conductor element reaches a maximum width in said part of said output section oriented at the varying spacing.
Claim 22
Dependent Claim
22 words
A radiator according to claim 11 wherein all of said output section of said conductor element is oriented at said varying spacing.
Claim 23
Dependent Claim
55 words
A radiator according to claim 11 wherein a further part of said output section of said conductor element is located adjacent said input section of said conductor element and is disposed at said predetermined spacing, and said output section of said conductor element reaches a maximum width in said further part of said output section.
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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) | 1994-12-02 | 1995-06-03 | 1995-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-02 | 1999-06-03 | 1999-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-02 | 2003-06-03 | 2003-12-03 | $7700.00 | Window Closed / Lapsed |