US5767808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microstrip patch antennas using very thin conductors
Assignee: 3M Co
•
Filing: 1995-01-13
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Granted: 1998-06-16
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Expires: 2015-01-13
Abstract
Abstract A microstrip patch antenna has a first conductive layer adjacent a dielectric substrate. The first conductive layer has a thickness of less than one skin depth of the material of the first conductive layer. A second conductive layer acts as the ground plane for the first conductive layer and a feed network feeds the radiating patch of the first conductive layer.
Inventors
- 👤 William B. Robbins
- 👤 Timothy S. Skogland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:57
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/0407
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
139 words
A microstrip patch antenna comprising: a first conductive layer of a conductive material having a first side and a second side; a first dielectric layer having a first side and a second side, said second side of said first conductive layer adjacent said first side of said first dielectric layer; a second conductive layer having a first side and a second side, said second side of said dielectric layer adjacent said first side of said second conductive layer, said second conductive layer having an aperture therethrough, said aperture aligned with said first conductive layer; and feeding means for feeding said first conductive layer; said first conductive layer having a thickness of less than one skin depth of said conductive material of said first conductive, layer wherein said microstrip patch antenna has a quality factor of between 5 and 500.
Claim 2
Dependent Claim
139 words
A microstrip patch antenna comprising: a first conductive layer of a conductive material having a first side and a second side; a first dielectric layer having a first side and a second side, said second side of said first conductive layer adjacent said first side of said first dielectric layer; a second conductive layer having a first side and a second side, said second side of said dielectric layer adjacent said first side of said second conductive layer, said second conductive layer having an aperture therethrough, said aperture aligned with said first conductive layer; and feeding means for feeding said first conductive layer; said first conductive layer having a thickness of less than one skin depth of said conductive material of said first conductive, layer wherein said microstrip patch antenna has a quality factor of between 5 and 500.
Claim 3
Dependent Claim
34 words
The microstrip patch antenna according to claim 1, wherein said thickness of said first conductive layer is between 0.03 to 0.4 of the skin depth of said conductive material of said first conductive layer.
Claim 4
Dependent Claim
33 words
The microstrip patch antenna according to claim 1, wherein said thickness of said first conductive layer is between 0.05 to 0.2 of the skin depth of said conductive material of said conductive layer.
Claim 5
Dependent Claim
22 words
The microstrip patch antenna according to claim 1, wherein said microstrip patch antenna has a quality factor of between 5 and 120.
Claim 6
Dependent Claim
172 words
A microstrip patch antenna comprising: a first conductive layer of a conductive material having a first side and a second side; a first dielectric layer having a first side and a second side, said second side of said first conductive layer adjacent said first side of said first dielectric layer; a second conductive layer having a first side and a second side, said second side of said dielectric layer adjacent said first side of said second conductive layer, said second conductive layer having an aperture therethrough, said aperture aligned with said first conductive layer; a second dielectric layer having a first side and a second side, said second side of said second conductive layer adjacent said first side of said second dielectric layer; and a feed line adjacent said second side of said second dielectric layer; said first conductive layer having a thickness of less than one skin depth of the conductive material of said first conductive layer, wherein said microstrip patch antenna has a quality factor of between 5 and 500.
Claim 7
Dependent Claim
172 words
A microstrip patch antenna comprising: a first conductive layer of a conductive material having a first side and a second side; a first dielectric layer having a first side and a second side, said second side of said first conductive layer adjacent said first side of said first dielectric layer; a second conductive layer having a first side and a second side, said second side of said dielectric layer adjacent said first side of said second conductive layer, said second conductive layer having an aperture therethrough, said aperture aligned with said first conductive layer; a second dielectric layer having a first side and a second side, said second side of said second conductive layer adjacent said first side of said second dielectric layer; and a feed line adjacent said second side of said second dielectric layer; said first conductive layer having a thickness of less than one skin depth of the conductive material of said first conductive layer, wherein said microstrip patch antenna has a quality factor of between 5 and 500.
Claim 8
Dependent Claim
34 words
The microstrip patch antenna according to claim 5, wherein said thickness of said first conductive layer is between 0.03 to 0.4 of the skin depth of said conductive material of said first conductive layer.
Claim 9
Dependent Claim
139 words
A microstrip patch antenna comprising: a film having a first side and a second side; first conductive material applied to said first side of said film; a first dielectric layer having a first side and a second side, said second side of said film adjacent said first side of said first dielectric layer; a second conductive layer having a first side and a second side, said second side of said first dielectric layer adjacent said first side of said second conductive layer, said second conductive layer having an aperture therethrough, said aperture aligned with said first conductive material; and feeding means for feeding said first conductive material; said first conductive material having a thickness of less than one skin depth of said first conductive material; wherein said microstrip patch antenna has a quality factor of between 5 and 500.
Claim 10
Dependent Claim
139 words
A microstrip patch antenna comprising: a film having a first side and a second side; first conductive material applied to said first side of said film; a first dielectric layer having a first side and a second side, said second side of said film adjacent said first side of said first dielectric layer; a second conductive layer having a first side and a second side, said second side of said first dielectric layer adjacent said first side of said second conductive layer, said second conductive layer having an aperture therethrough, said aperture aligned with said first conductive material; and feeding means for feeding said first conductive material; said first conductive material having a thickness of less than one skin depth of said first conductive material; wherein said microstrip patch antenna has a quality factor of between 5 and 500.
Claim 11
Dependent Claim
29 words
The microstrip patch antenna according to claim 7, wherein said thickness of said first conductive layer is between 0.03 to 0.4 of the skin depth of said conductive material.
Claim 12
Dependent Claim
29 words
The microstrip patch antenna according to claim 7, wherein said thickness of said first conductive material is between 0.05 to 0.2 of the skin depth of said conductive material.
Claim 13
Dependent Claim
13 words
The microstrip patch antenna according to claim 7, wherein said film is polyester.
Claim 14
Dependent Claim
13 words
The microstrip patch antenna according to claim 7, wherein said film is polyimide.
Claim 15
Dependent Claim
13 words
The microstrip patch antenna according to claim 7, wherein said film is clear.
Claim 16
Dependent Claim
13 words
The microstrip patch antenna according to claim 7, wherein said film is pigmented.
Claim 17
Dependent Claim
29 words
The microstrip patch antenna according to claim 7, wherein said second conductive layer has a thickness of less than one skin depth of the conductive material said conductive layer.
Claim 18
Dependent Claim
34 words
The microstrip patch antenna according to claim 14, wherein said thickness of said second conductive layer is between 0.03 to 0.4 of the skin depth of the conductive material of said second conductive layer.
Claim 19
Dependent Claim
33 words
The microstrip patch antenna according to claim 14, wherein said thickness of said second conductive layer is between 0.05 to 0.2 of the skin depth of the conductive material of said conductive layer.
Claim 20
Dependent Claim
139 words
A microstrip patch antenna comprising: a film having a first side and a second side; a first conductive material applied to said first side of said film; a first dielectric layer having a first side and a second side, said first side of said film adjacent said first side of said first dielectric layer; a second conductive layer having a first side and a second side, said second side of said dielectric layer adjacent said first side of said second conductive layer, said second conductive layer having an aperture therethrough, said aperture aligned with said first conductive material; and feeding means for feeding said first conductive material; said first conductive material having a thickness of less than one skin depth of said first conductive material; wherein said microstrip patch antenna has a quality factor of between 5 and 500.
Claim 21
Dependent Claim
139 words
A microstrip patch antenna comprising: a film having a first side and a second side; a first conductive material applied to said first side of said film; a first dielectric layer having a first side and a second side, said first side of said film adjacent said first side of said first dielectric layer; a second conductive layer having a first side and a second side, said second side of said dielectric layer adjacent said first side of said second conductive layer, said second conductive layer having an aperture therethrough, said aperture aligned with said first conductive material; and feeding means for feeding said first conductive material; said first conductive material having a thickness of less than one skin depth of said first conductive material; wherein said microstrip patch antenna has a quality factor of between 5 and 500.
Claim 22
Dependent Claim
29 words
The microstrip patch antenna according to claim 17, wherein said thickness of said first conductive layer is between 0.03 to 0.4 of the skin depth of said conductive material.
Claim 23
Dependent Claim
29 words
The microstrip patch antenna according to claim 17, wherein said thickness of said first conductive material is between 0.05 to 0.2 of the skin depth of said conductive material.
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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) | 2001-06-15 | 2001-12-15 | 2002-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-15 | 2005-12-15 | 2006-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-15 | 2009-12-15 | 2010-06-16 | $7700.00 | Window Closed / Lapsed |