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US6121932A
Expired / Lapsed
US
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Microstrip antenna and method of forming same
Assignee: Motorola Solutions Inc
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Filing: 1999-04-08
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Granted: 2000-09-19
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Expires: 2019-04-08
Abstract
Abstract A microstrip antenna (300) includes a substrate (302) having an inner ground plane layer (322) around which a radiator element is folded so as to form first and second radiator patches (310, 312) on either side of the ground plane.
Inventors
- 👤 Danny O. McCoy
- 👤 Antonio Faraone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:10
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q9/0421; H01Q1/00; H01Q1/08; H01Q1/084; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/242; H01Q1/243
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
100 words
A microstrip antenna structure, comprising: a substrate having top, bottom, and edge surfaces and an inner layer ground plane; a first radiator element disposed onto the top surface of the substrate over the ground plane, said first radiator element having an electrical length of a quarter wavelength; a second radiator element disposed onto the bottom surface of the substrate over the ground plane, said second radiator element having an electrical length of a quarter wavelength; the first radiator element coupled to the second radiator element along one edge; and a radio frequency (RF) feed coupled to the first radiator element.
Claim 2
Dependent Claim
100 words
A microstrip antenna structure, comprising: a substrate having top, bottom, and edge surfaces and an inner layer ground plane; a first radiator element disposed onto the top surface of the substrate over the ground plane, said first radiator element having an electrical length of a quarter wavelength; a second radiator element disposed onto the bottom surface of the substrate over the ground plane, said second radiator element having an electrical length of a quarter wavelength; the first radiator element coupled to the second radiator element along one edge; and a radio frequency (RF) feed coupled to the first radiator element.
Claim 3
Dependent Claim
28 words
A microstrip antenna structure as described in claim 1, wherein the first radiator element is coupled to the second radiator element along the one edge through conductive paint.
Claim 4
Dependent Claim
28 words
A microstrip antenna structure as described in claim 1, wherein the first radiator element is coupled to the second radiator element along the one edge through conductive pins.
Claim 5
Dependent Claim
27 words
A microstrip antenna structure as described in claim 1, wherein the first radiator element is coupled to the second radiator element along the one edge through vias.
Claim 6
Dependent Claim
28 words
A microstrip antenna structure as described in claim 1, wherein the first radiator element is coupled to the second radiator element along the one edge through capacitive coupling.
Claim 7
Dependent Claim
20 words
A microstrip antenna as described in claim 1, wherein the RF feed is capacitively coupled to the first radiator element.
Claim 8
Dependent Claim
22 words
A microstrip antenna as described in claim 1, wherein the RF feed comprises a coaxial feed coupled to the first radiator element.
Claim 9
Dependent Claim
22 words
A microstrip antenna as described in claim 1, further comprising a second radio frequency (RF) feed coupled to the second radiator element.
Claim 10
Independent Claim
59 words
A method of forming a microstrip antenna structure, comprising the steps of: providing a substrate having an inner layer ground plane layer and an edge surface; and forming first and second coupled radiator patches over opposing surfaces of the ground plane, wherein the step of forming comprises the step of folding a single radiator patch along the edge surface.
Claim 11
Independent Claim
59 words
A method of forming a microstrip antenna structure, comprising the steps of: providing a substrate having an inner layer ground plane layer and an edge surface; and forming first and second coupled radiator patches over opposing surfaces of the ground plane, wherein the step of forming comprises the step of folding a single radiator patch along the edge surface.
Claim 12
Independent Claim
70 words
A method of forming a microstrip antenna structure, comprising the steps of: providing a substrate having an inner layer ground plane layer and an edge surface; and forming first and second coupled radiator patches over opposing surfaces of the ground plane, wherein the step of forming comprises the step of painting the edge surface with a conductive paint to couple the first and second radiator patches along the edge surface.
Claim 13
Independent Claim
70 words
A method of forming a microstrip antenna structure, comprising the steps of: providing a substrate having an inner layer ground plane layer and an edge surface; and forming first and second coupled radiator patches over opposing surfaces of the ground plane, wherein the step of forming comprises the step of painting the edge surface with a conductive paint to couple the first and second radiator patches along the edge surface.
Claim 14
Dependent Claim
57 words
The method of claim 10, further comprising the steps of: coupling a first radio frequency feed to the first radiator patch; coupling a second radio frequency feed to the second radiator patch; feeding a radio frequency signal to either the first or second radio frequency feed; and generating a substantially spherical radiation pattern from the microstrip antenna.
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) | 2003-09-19 | 2004-03-20 | 2004-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-09-19 | 2008-03-20 | 2008-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-09-19 | 2012-03-20 | 2012-09-19 | $7700.00 | Window Closed / Lapsed |