Patent EP0687502A2 successfully refreshed from Google Patents.
Patent US6339402B1 successfully refreshed from Google Patents.
US6339402B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low profile tunable circularly polarized antenna
Assignee: TE Connectivity Solutions GmbH
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Filing: 2000-12-21
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Granted: 2002-01-15
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Expires: 2020-12-21
Abstract
Abstract An antenna assembly for a wireless communication device. The antenna assembly is mountable onto a printed wiring board (PWB) and consists of first and second conducting elements. The first conducting element is capacitively coupled via a matchable shunt and operatively connected to a ground plane of the PWB, while the second conducting element is operatively connected to the ground plane of the PWB at two locations. The first and second conducting elements are operatively connected to each other by a tunable bridge capacitor and together form two orthogonal magnetic dipole elements. The antenna assembly provides substantially circular hemispherical polarization over a wide range of amplitudes by virtue of the geometry and orientation of the two magnetic dipole elements which are fed with equal amplitude, but in-phase quadrature. The matchable shunt acts as an impedance transformer to yield a low voltage standing wave ratio (VSWR) of less than two-to-one at the operating frequency. The antenna assembly includes a single feed point which permits RF energy to be distributed to both conducting elements without a power splitter or phase shifter(s).
Inventors
- 👤 Patrick D. McKivergan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:54
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q9/0421; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/242; H01Q1/243; H01Q9/0428; H01Q9/0442
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
152 words
An antenna assembly for use in a wireless communications device, the antenna assembly comprising: a ground plane element disposed upon a printed wiring board; a first conducting element having a conductive surface with a feed point, a first leg element and a second leg element, said conductive surface being disposed away from the ground plane element to define an interior region, wherein the first conducting element is capacitively coupled to the ground plane by its first leg element and operatively connected to the ground plane by its second leg element; a second conducting element having a conductive surface and a leg element, said second conducting element being operatively connected to the ground plane by its leg element, said second conducting element being operatively connected to the ground plane at a second location away from the leg element; and a capacitor element capacitively coupling the first conducting element to the second conducting element.
Claim 2
Dependent Claim
152 words
An antenna assembly for use in a wireless communications device, the antenna assembly comprising: a ground plane element disposed upon a printed wiring board; a first conducting element having a conductive surface with a feed point, a first leg element and a second leg element, said conductive surface being disposed away from the ground plane element to define an interior region, wherein the first conducting element is capacitively coupled to the ground plane by its first leg element and operatively connected to the ground plane by its second leg element; a second conducting element having a conductive surface and a leg element, said second conducting element being operatively connected to the ground plane by its leg element, said second conducting element being operatively connected to the ground plane at a second location away from the leg element; and a capacitor element capacitively coupling the first conducting element to the second conducting element.
Claim 3
Dependent Claim
21 words
The antenna assembly of claim 1 , wherein the first and second conductive surfaces are in substantial alignment with each other.
Claim 4
Dependent Claim
21 words
The antenna assembly of claim 2 , wherein the first and second conductive surfaces are substantially parallel to the ground plane.
Claim 5
Dependent Claim
13 words
The antenna assembly of claim 1 , wherein said capacitor element is tunable.
Claim 6
Dependent Claim
19 words
The antenna assembly of claim 1 , wherein the first conductive surface is defined as a substantially rectangular shape.
Claim 7
Dependent Claim
15 words
The antenna assembly of claim 1 , wherein the second conductive surface is a polygon.
Claim 8
Dependent Claim
13 words
The antenna assembly of claim 6 , wherein the polygon is a trapezoid.
Claim 9
Dependent Claim
44 words
The antenna assembly of claim 1 , wherein the first leg element of the first conducting element is orthogonally arranged with respect to the conductive surface of the first conducting element and wherein the second leg element is skewed with respect said conductive surface.
Claim 10
Dependent Claim
24 words
The antenna assembly of claim 8 , wherein the leg element of the second conducting element is skewed with respect to its conductive surface.
Claim 11
Dependent Claim
22 words
The antenna assembly of claim 1 , wherein the first and second conductive surfaces are angled with respect to the ground plane.
Claim 12
Dependent Claim
171 words
A wireless communications device comprising: a printed wiring board including a ground plane element and an RF signal port; a first conducting element having a conductive surface with a feed point, a first leg element and a second leg element, said feed point being intermediate the first and second leg elements, said feed point being operatively coupled to the RF signal port via a conductor, said conductive surface being disposed away from the ground plane element to define an interior region, wherein the first conducting element is capacitively coupled to the ground plane by its first leg element and operatively connected to the ground plane by its second leg element; a second conducting element having a conductive surface and a leg element, said second conducting element being operatively connected to ground plane by its leg element, said second conducting element being operatively connected to the ground plane at a second location away from the leg element; and a capacitor element capacitively coupling the first conducting element to the second conducting element.
Claim 13
Dependent Claim
171 words
A wireless communications device comprising: a printed wiring board including a ground plane element and an RF signal port; a first conducting element having a conductive surface with a feed point, a first leg element and a second leg element, said feed point being intermediate the first and second leg elements, said feed point being operatively coupled to the RF signal port via a conductor, said conductive surface being disposed away from the ground plane element to define an interior region, wherein the first conducting element is capacitively coupled to the ground plane by its first leg element and operatively connected to the ground plane by its second leg element; a second conducting element having a conductive surface and a leg element, said second conducting element being operatively connected to ground plane by its leg element, said second conducting element being operatively connected to the ground plane at a second location away from the leg element; and a capacitor element capacitively coupling the first conducting element to the second conducting element.
Claim 14
Dependent Claim
22 words
The wireless communications device of claim 11 , wherein the first and second conductive surfaces are in substantial alignment with each other.
Claim 15
Dependent Claim
22 words
The wireless communications device of claim 12 , wherein the first and second conductive surfaces are substantially parallel to the ground plane.
Claim 16
Dependent Claim
14 words
The wireless communications device of claim 11 , wherein said capacitor element is tunable.
Claim 17
Dependent Claim
20 words
The wireless communications device of claim 11 , wherein the first conductive surface is defined as a substantially rectangular shape.
Claim 18
Dependent Claim
16 words
The wireless communications device of claim 11 , wherein the second conductive surface is a polygon.
Claim 19
Dependent Claim
14 words
The wireless communications device of claim 16 , wherein the polygon is a trapezoid.
Claim 20
Dependent Claim
45 words
The wireless communications device of claim 11 , wherein the first leg element of the first conducting element is orthogonally arranged with respect to the conductive surface of the first conducting element and wherein the second leg element is skewed with respect said conductive surface.
Claim 21
Dependent Claim
25 words
The wireless communications device of claim 18 , wherein the leg element of the second conducting element is skewed with respect to its conductive surface.
Claim 22
Dependent Claim
23 words
The wireless communications device of claim 11 , wherein the first and second conductive surfaces are angled with respect to the ground plane.
Claim 23
Dependent Claim
149 words
An antenna assembly for use in a wireless communications device, the antenna assembly comprising: a ground plane element disposed upon a printed wiring board; a first conducting element having a conductive surface with a feed point, a first leg element and a second leg element, said conductive surface being disposed away from the ground plane element to define an interior region, wherein the first conducting element is capacitively coupled to the ground plane by its first leg element and operatively connected to the ground plane by its second leg element; a second conducting element having a conductive surface and a leg element, said second conducting element being operatively connected to ground plane by its leg element, said second conducting element being conductively coupled to the ground plane at a location upon its conductive surface; and a capacitor element capacitively coupling the first conducting element to the second conducting element.
Claim 24
Dependent Claim
149 words
An antenna assembly for use in a wireless communications device, the antenna assembly comprising: a ground plane element disposed upon a printed wiring board; a first conducting element having a conductive surface with a feed point, a first leg element and a second leg element, said conductive surface being disposed away from the ground plane element to define an interior region, wherein the first conducting element is capacitively coupled to the ground plane by its first leg element and operatively connected to the ground plane by its second leg element; a second conducting element having a conductive surface and a leg element, said second conducting element being operatively connected to ground plane by its leg element, said second conducting element being conductively coupled to the ground plane at a location upon its conductive surface; and a capacitor element capacitively coupling the first conducting element to the second conducting element.
Claim 25
Dependent Claim
21 words
An antenna assembly of claim 21 , wherein the first and second conductive surfaces are substantially parallel to the ground plane.
Claim 26
Dependent Claim
14 words
The wireless communications device of claim 21 , wherein said capacitor element is tunable.
Claim 27
Dependent Claim
45 words
The wireless communications device of claim 21 , wherein the first leg element of the first conducting element is orthogonally arranged with respect to the conductive surface of the first conducting element and wherein the second leg element is skewed with respect said conductive surface.
Claim 28
Dependent Claim
25 words
The wireless communications device of claim 24 , wherein the leg element of the second conducting element is skewed with respect to its conductive surface.
Claim 29
Dependent Claim
23 words
The wireless communications device of claim 25 , wherein the first and second conductive surfaces are angled with respect to the ground plane.
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) | 2005-01-14 | 2005-07-16 | 2006-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-01-14 | 2009-07-16 | 2010-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-01-14 | 2013-07-16 | 2014-01-15 | $7700.00 | Window Closed / Lapsed |