US6002369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microstrip antenna and method of forming same
Assignee: Motorola Solutions Inc
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Filing: 1997-11-24
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Granted: 1999-12-14
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Expires: 2017-11-24
Abstract
Abstract A microstrip antenna (300) provides improved bandwidth control by gap coupling first and second triangular patches (310, 312) over a ground plane (322). The first and second triangular patches (310, 312) are resonant at different frequencies. The use of gap-coupled triangular patches (310, 312) allows for smaller structured microstrip antennas.
Inventors
- 👤 Miguel A. Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:33
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/36; H01Q1/38; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/242; H01Q1/243; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q9/0442
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
48 words
A microstrip antenna, comprising: a substrate having a ground plane; first and second right angled isosceles triangular shaped radiator elements disposed over the ground plane and gap-coupled along their hypotenuses; and a radio frequency (RF) feed point coupled to the first right angled isosceles triangular shaped radiator element.
Claim 2
Dependent Claim
48 words
A microstrip antenna, comprising: a substrate having a ground plane; first and second right angled isosceles triangular shaped radiator elements disposed over the ground plane and gap-coupled along their hypotenuses; and a radio frequency (RF) feed point coupled to the first right angled isosceles triangular shaped radiator element.
Claim 3
Dependent Claim
74 words
A microstrip antenna, including: a substrate having a ground plane; a first right angled isosceles radiator element disposed on the substrate and characterized by a first hypotenuse; and a second right angled isosceles radiator element disposed on the substrate and characterized by a second hypotenuse, the first and second right angled isosceles radiator elements being gap-coupled along the first and second hypotenuses, the first and second hypotenuses determining the bandwidth of the microstrip antenna.
Claim 4
Dependent Claim
74 words
A microstrip antenna, including: a substrate having a ground plane; a first right angled isosceles radiator element disposed on the substrate and characterized by a first hypotenuse; and a second right angled isosceles radiator element disposed on the substrate and characterized by a second hypotenuse, the first and second right angled isosceles radiator elements being gap-coupled along the first and second hypotenuses, the first and second hypotenuses determining the bandwidth of the microstrip antenna.
Claim 5
Dependent Claim
23 words
A microstrip antenna as described in claim 2, wherein the first and second right angled isosceles radiator elements are resonant at different frequencies.
Claim 6
Dependent Claim
112 words
A microstrip antenna, comprising: a substrate having first and second opposing surfaces, the second surface providing a ground plane; a feed point coupled to the substrate to provide a radio frequency (RF) signal; a first radiator element disposed on the first surface of the substrate, the first radiator element forming a first geometric right angled isosceles triangle having a first hypotenuse; and a second radiator element disposed on the first surface of the substrate, the second radiator element forming a second geometric right angled isosceles triangle having a second hypotenuse, the second hypotenuse being gap coupled to the first hypotenuse, the first and second radiator elements providing first and second resonant frequencies.
Claim 7
Dependent Claim
112 words
A microstrip antenna, comprising: a substrate having first and second opposing surfaces, the second surface providing a ground plane; a feed point coupled to the substrate to provide a radio frequency (RF) signal; a first radiator element disposed on the first surface of the substrate, the first radiator element forming a first geometric right angled isosceles triangle having a first hypotenuse; and a second radiator element disposed on the first surface of the substrate, the second radiator element forming a second geometric right angled isosceles triangle having a second hypotenuse, the second hypotenuse being gap coupled to the first hypotenuse, the first and second radiator elements providing first and second resonant frequencies.
Claim 8
Dependent Claim
69 words
A patch antenna structure, comprising: a substrate having a ground plane; first and second right angled isosceles triangular shaped radiator patches disposed on the substrate above the ground plane, the first triangular right angled isosceles triangular shaped radiator patch being gap-coupled to the second right angled isosceles triangular shaped radiator patch along their hypotenuses; and a conductive feed coupled to the substrate for feeding a radio frequency (RF) signal.
Claim 9
Dependent Claim
69 words
A patch antenna structure, comprising: a substrate having a ground plane; first and second right angled isosceles triangular shaped radiator patches disposed on the substrate above the ground plane, the first triangular right angled isosceles triangular shaped radiator patch being gap-coupled to the second right angled isosceles triangular shaped radiator patch along their hypotenuses; and a conductive feed coupled to the substrate for feeding a radio frequency (RF) signal.
Claim 10
Dependent Claim
16 words
An antenna structure as described in claim 5, wherein the conductive feed comprises a coaxial feed.
Claim 11
Dependent Claim
17 words
An antenna structure as described in claim 5, wherein the conductive feed comprises a microstrip feed line.
Claim 12
Dependent Claim
102 words
A microstrip antenna structure, comprising: a substrate having top and bottom surfaces, the bottom surface having a ground plane; first and second radiator patterns disposed onto the top surface of the substrate, said first radiator pattern formed as a first right angled isosceles triangle and said second radiator pattern formed as a second right angled isosceles triangle, the first and second right angled isosceles triangles characterized by first and second hypotenuses respectively, the first and second radiator patterns capacitively coupled along the first and second hypotenuses; and a radio frequency (RF) feed coupled to one of the first or second radiator elements.
Claim 13
Dependent Claim
102 words
A microstrip antenna structure, comprising: a substrate having top and bottom surfaces, the bottom surface having a ground plane; first and second radiator patterns disposed onto the top surface of the substrate, said first radiator pattern formed as a first right angled isosceles triangle and said second radiator pattern formed as a second right angled isosceles triangle, the first and second right angled isosceles triangles characterized by first and second hypotenuses respectively, the first and second radiator patterns capacitively coupled along the first and second hypotenuses; and a radio frequency (RF) feed coupled to one of the first or second radiator elements.
Claim 14
Independent Claim
154 words
A method of forming a microstrip antenna structure, comprising the steps of: providing a substrate having a ground plane; patterning a first conductive metal patch in the form of a right angled isosceles triangle onto the substrate over the ground plane, said first conductive metal patch operating at a first resonant frequency and characterized by a first hypotenuse having predetermined length; patterning a second conductive metal patch in the form of a right angled isosceles triangle onto the substrate over the ground plane, said second conductive metal patch operating at a second resonant frequency and characterized by a second hypotenuse having a predetermined length; forming a gap between the first and second conductive metal patches along the first and second hypotenuses so as to allow for electromagnetic coupling between the first and second conductive metal patches; and coupling a radio frequency feed to the first conductive metal patch to feed a radio frequency signal.
Claim 15
Independent Claim
154 words
A method of forming a microstrip antenna structure, comprising the steps of: providing a substrate having a ground plane; patterning a first conductive metal patch in the form of a right angled isosceles triangle onto the substrate over the ground plane, said first conductive metal patch operating at a first resonant frequency and characterized by a first hypotenuse having predetermined length; patterning a second conductive metal patch in the form of a right angled isosceles triangle onto the substrate over the ground plane, said second conductive metal patch operating at a second resonant frequency and characterized by a second hypotenuse having a predetermined length; forming a gap between the first and second conductive metal patches along the first and second hypotenuses so as to allow for electromagnetic coupling between the first and second conductive metal patches; and coupling a radio frequency feed to the first conductive metal patch to feed a radio frequency signal.
Claim 16
Dependent Claim
30 words
The method of claim 9, further comprising the step of altering the predetermined lengths of the first and second hypotenuses to vary the bandwidth of the antenna microstrip antenna structure.
Claim 17
Dependent Claim
83 words
A radio, comprising: a housing; a microstrip antenna coupled to the housing, the microstrip antenna formed of first and second gap-coupled triangular shaped radiator elements; a feed point coupled to the microstrip antenna for transferring a radio frequency (RF) signal; and wherein the first and second gap-coupled triangular shaped radiator elements approximate first and second right angled isosceles triangles characterized by first and second hypotenuses respectively, the first and second gap-coupled triangular shaped radiator elements being gap-coupled along the first and second hypotenuses.
Claim 18
Dependent Claim
83 words
A radio, comprising: a housing; a microstrip antenna coupled to the housing, the microstrip antenna formed of first and second gap-coupled triangular shaped radiator elements; a feed point coupled to the microstrip antenna for transferring a radio frequency (RF) signal; and wherein the first and second gap-coupled triangular shaped radiator elements approximate first and second right angled isosceles triangles characterized by first and second hypotenuses respectively, the first and second gap-coupled triangular shaped radiator elements being gap-coupled along the first and second hypotenuses.
Claim 19
Dependent Claim
23 words
A radio as described in claim 11, wherein the radio housing includes a flap and the microstrip antenna is coupled to the flap.
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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) | 2002-12-13 | 2003-06-14 | 2003-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-13 | 2007-06-14 | 2007-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-13 | 2011-06-14 | 2011-12-14 | $7700.00 | Window Closed / Lapsed |