EP0749176A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Planar and non-planar double C-patch antennas having different aperture shapes
Assignee: Nokia Oyj
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Filing: 1996-06-13
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Granted: —
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Expires: 2016-06-13
Abstract
Abstract A shorted, dual C-patch antenna includes a truncated ground plane, a layer of dielectric material having a first surface overlying the ground plane and an opposing second surface, and an electrically conductive layer overlying the second opposing surface of the dielectric layer. The electrically conductive layer forms a radiating patch and has a non-rectangularly shaped aperture (e.g., parabolic, triangular, pentagonal) having a length that extends along a first edge of the electrically conductive layer and a width that extends towards an oppositely disposed second edge. The length has a value that is equal to approximately 20% to approximately 35% of a length of the first edge. The antenna may further include electrically conductive vias or feedthroughs for shorting the electrically conductive layer to the ground plane at a region adjacent to a third edge of the electrically conductive layer. The antenna may be curved about one or more axes.
Inventors
- 👤 Mohamed Sanad
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 02:20
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/28; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/2258; H01Q1/2275; H01Q9/0407
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
146 words
An antenna structure, comprising: a ground plane; a layer of dielectric material having a first surface overlying said ground plane and an opposing second surface; an electrically conductive layer overlying said second opposing surface of said dielectric layer, said electrically conductive layer being in the shape of a parallelogram and having a first non-rectangularly shaped aperture having a length that extends along a first edge of said electrically conductive layer and a width that extends towards an oppositely disposed second edge, said electrically conductive layer further having a second non-rectangularly shaped aperture having a length that extends along said first edge of said electrically conductive layer and a width that extends towards said oppositely disposed second edge, said first and second non-rectangularly shaped apertures having a zero potential plane disposed therebetween; and means for coupling radio frequency energy into and out of said electrically conductive layer.
Claim 2
Dependent Claim
31 words
An antenna structure as set forth in claim 1 wherein said length has a value that is equal to approximately 20% to approximately 35% of a length of said first edge.
Claim 3
Dependent Claim
43 words
An antenna structure as set forth in claim 1 wherein said width of each of said first and second non-rectangularly shaped apertures has a value that is equal to approximately 15% to approximately 40% less than a width of said electrically conductive layer.
Claim 4
Dependent Claim
47 words
An antenna structure as set forth in claim 1 wherein said coupling means is comprised of means for connecting a coaxial cable to said electrically conductive layer at a point between said first and second apertures that is nearer to one of said apertures than the other.
Claim 5
Dependent Claim
19 words
An antenna structure as set forth in claim 1, wherein said structure is curved about at least one axis.
Claim 6
Dependent Claim
119 words
An antenna structure, comprising: a ground plane; a layer of dielectric material having a first surface overlying said ground plane and an opposing second surface; an electrically conductive layer overlying said second opposing surface of said dielectric layer, said electrically conductive layer being in the shape of a parallelogram and having a non-rectangularly shaped aperture having a length that extends along a first edge of said electrically conductive layer and a width that extends towards an oppositely disposed second edge; means for shorting said electrically conductive layer to said ground plane at a region adjacent to a third edge of said electrically conductive layer; and means for coupling radio frequency energy into and out of said electrically conductive layer.
Claim 7
Dependent Claim
58 words
An antenna structure as set forth in claim 6, wherein said width of said aperture has a value that is equal to approximately 15% to approximately 40% less than a width of said electrically conductive layer, and wherein said aperture is located from said third edge at distance that is approximately equal to said length of said aperture.
Claim 8
Dependent Claim
45 words
An antenna structure as set forth in claim 6, wherein said shorting means is comprised of one of a continuous short circuit means and a plurality of electrically conductive feedthroughs that pass through said dielectric layer between said ground plane and said electrically conductive layer.
Claim 9
Dependent Claim
37 words
An antenna structure as set forth in claim 6, wherein said coupling means is comprised of means for connecting a coaxial cable to said electrically conductive layer at a point between said aperture and said third edge.
Claim 10
Dependent Claim
30 words
An antenna structure as set forth in claim 6, wherein said ground plane is truncated, and has dimensions that are approximately equal to the dimensions of said electrically conductive layer.
Claim 11
Dependent Claim
19 words
An antenna structure as set forth in claim 6, wherein said structure is curved about at least one axis.
Claim 12
Dependent Claim
95 words
A module adapted for insertion into a data processor, said module comprising: an interface for electrically coupling said module to the data processor; a modem that is bidirectionally coupled to said interface; an RF energy transmitter having an input coupled to an output of said modem; an RF energy receiver having an output coupled to an input of said modem; and a shorted, dual C-patch antenna having a non-rectangular aperture that is electrically coupled to at least one of an output of said RF energy transmitter and to an input of said RF energy receiver.
Claim 13
Dependent Claim
142 words
A module as set forth in claim 12, wherein said shorted, dual C-patch antenna is comprised of: a ground plane; a layer of dielectric material having a first surface overlying said ground plane and an opposing second surface; an electrically conductive layer overlying said second opposing surface of said dielectric layer, said electrically conductive layer being in the shape of a parallelogram and having said non-rectangularly shaped aperture having a length that extends along a first edge of said electrically conductive layer and a width that extends towards an oppositely disposed second edge; means for shorting said electrically conductive layer to said ground plane at a region adjacent to a third edge of said electrically conductive layer; and means for coupling said electrically conductive layer to at least one of said output of said transmitter and to said input of said receiver.
Claim 14
Dependent Claim
83 words
A module as set forth in claim 13, wherein said length of said aperture has a value that is equal to approximately 20% to approximately 35% of a length of said first edge, and wherein said width of said aperture has a value that is equal to approximately 15% to approximately 40% less than a width of said electrically conductive layer, and wherein said aperture is located from said third edge at distance that is approximately equal to said length of said aperture.
Claim 15
Dependent Claim
36 words
A module as set forth in claim 13, wherein said shorting means is comprised of a plurality of electrically conductive feedthroughs that pass through said dielectric layer between said ground plane and said electrically conductive layer.
Claim 16
Dependent Claim
32 words
A module as set forth in claim 13, wherein said shorting means is comprised of a length of electrically conductive material that extends from said ground plane to said electrically conductive layer.
Claim 17
Dependent Claim
36 words
A module as set forth in claim 13, wherein said coupling means is comprised of means for connecting a coaxial cable to said electrically conductive layer at a point between said aperture and said third edge.
Claim 18
Dependent Claim
36 words
A module as set forth in claim 13, wherein said length of said first edge is less than approximately 8.5 cm, and wherein said third edge has a length that is less than approximately 5.5 cm.
Claim 19
Dependent Claim
29 words
A module as set forth in claim 13, wherein said ground plane is truncated, and has dimensions that are approximately equal to the dimensions of said electrically conductive layer.
Claim 20
Dependent Claim
23 words
A module as set forth in claim 12, wherein said module has dimensions of approximately 8.5 cm x 5.4 cm by 0.5 cm.
Claim 21
Dependent Claim
22 words
A module as set forth in claim 12, wherein said shorted, dual C-patch antenna has a resonant frequency of approximately 900 MHz.
Claim 22
Dependent Claim
96 words
A microstrip antenna, comprising: a substrate comprising a ground plane, a layer of dielectric material having a first surface overlying said ground plane and an opposing second surface, and an electrically conductive layer overlying said second opposing surface of said dielectric layer; means for shorting said electrically conductive layer to said ground plane at a region adjacent to an edge of said electrically conductive layer; and means for coupling radio frequency energy into and out of said electrically conductive layer; wherein said substrate has a radius of curvature about at least one axis of said substrate.
Claim 23
Dependent Claim
32 words
A microstrip antenna as set forth in claim 22, wherein said antenna is a shorted, double C-patch antenna having a radiating aperture having a shape selected from one of rectangular and non-rectangular.
References Cited (Backward Citations)
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