EP0753897A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Wideband double C-patch antenna including gap-coupled parasitic elements
Assignee: Nokia Inc
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Filing: 1996-06-13
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Granted: —
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Expires: 2016-06-13
Abstract
Abstract A wide bandwidth, 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 is differentiated into a plurality of antenna elements including a driven antenna element and at least one non-driven, parasitic antenna element. Each of the antenna elements is in the shape of a parallelogram and has one of a rectangular and a non-rectangular (e.g., parabolic, triangular, pentagonal) aperture 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 wide bandwidth antenna may be curved about one or more axes.
Inventors
- 👤 Mohamed Sanad
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 09:25
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/28; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/2258; H01Q1/2275; H01Q19/00; H01Q19/005; H01Q9/0407
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
187 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 differentiated into a plurality of antenna elements including a driven antenna element and at least one non-driven, parasitic antenna element, individual ones of said parasitic antenna elements being disposed on opposite sides of said driven antenna element, each of said antenna elements having the shape of a parallelogram and having a first 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 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 apertures having a zero potential plane disposed therebetween; and means for coupling radio frequency energy into and out of said electrically conductive layer of said driven antenna element.
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 or 2, wherein said width of each of said first and second 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
48 words
An antenna structure as set forth in any preceding claim, 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
20 words
An antenna structure as set forth in any preceding claim, wherein said structure is curved about at least one axis.
Claim 6
Dependent Claim
41 words
An antenna structure as set forth in any preceding claim, wherein each of said antenna elements includes means for shorting said electrically conductive layer to said ground plane at a region adjacent to a third edge of said electrically conductive layer.
Claim 7
Dependent Claim
33 words
An antenna structure as set forth in claim 6, wherein each of said apertures is located from said third edge at a distance that is approximately equal to said length of said aperture.
Claim 8
Dependent Claim
68 words
An antenna structure as set forth in claim 6 or 7, wherein said shorting means comprises a continuous short circuit means, or a partial short circuit means, or a plurality of electrically conductive feed throughs that pass through said dielectric layer between said ground plane and said electrically conductive layer, or a length of electrically conductive material that extends from said ground plane to said electrically conductive layer.
Claim 9
Dependent Claim
41 words
An antenna structure as set forth in any of claims 6 to 8, 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 10
Dependent Claim
43 words
An antenna structure as set forth in any preceding claim, wherein said coupling means is comprised of means for connecting a coaxial cable to said electrically conductive layer of said driven antenna element at a point between said aperture and said third edge.
Claim 11
Dependent Claim
36 words
An antenna structure as set forth in any preceding claim, wherein said ground plane is truncated, and has dimensions that are approximately equal to the total dimensions of said driven element and said non-driven, parasitic elements.
Claim 12
Dependent Claim
18 words
An antenna structure as set forth in any preceding claim, having a resonant frequency of approximately 900 MHz.
Claim 13
Dependent Claim
117 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 wide band, shorted, dual C-patch antenna that is electrically coupled to an output of said RF energy transmitter and to an input of said RF energy receiver, said antenna being comprised of a driven antenna element and at least one non-driven, parasitic antenna element that is coupled to said driven antenna element across a gap.
Claim 14
Dependent Claim
27 words
A module as set forth in claim 13, wherein said shorted, dual C-patch antenna has an antenna structure as claimed in any of claims 1 to 12.
Claim 15
Dependent Claim
25 words
A module as set forth in claim 13 or 14, wherein said module has dimensions of approximately 8.5 cm x 5.4 cm by 0.5 cm.
Claim 16
Dependent Claim
73 words
A portable handset of a radiotelephone, said handset comprising: an RF energy transmitter; an RF energy receiver; and a wide bandwidth, shorted, microstrip antenna that is electrically coupled to an output of said RF energy transmitter and to an input of said RF energy receiver, said antenna being comprised of a driven antenna element and at least one non-driven, parasitic antenna element that is coupled to said driven antenna element across a gap.
Claim 17
Dependent Claim
36 words
A handset as set forth in claim 16, wherein said wide bandwidth, shorted, microstrip antenna is comprised of a shorted, dual C-patch antenna having an antenna structure as claimed in any of claims 1 to 12.
Claim 18
Dependent Claim
104 words
A wireless communication system comprising a handset as set forth in claim 16 or 17, and further comprising a base station comprising a base station RF energy transmitter and a base station RF energy receiver capable of wireless, bidirectional communication with said handset, wherein said base station is comprised of a second, wide bandwidth, shorted, microstrip antenna that is electrically coupled to an output of said base station RF energy transmitter and to an input of said base station RF energy receiver, said second wide bandwidth, shorted, microstrip antenna being comprised of a driven antenna element and at least one non-driven, parasitic antenna element.
References Cited (Backward Citations)
No citation records indexed.
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