US6025805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inverted-E antenna
Assignee: Apple Inc
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Filing: 1997-12-11
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Granted: 2000-02-15
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Expires: 2017-12-11
Abstract
Abstract The present invention relates to radio communications antennas and in particular relates to an antenna for such. An inverted E antenna is disclosed comprising a radiating element and a ground plane. The antenna is suitable for placement in a mobile communications handset. The antenna finds particular applicability in dual mode handsets, where two or more antennas may be located in close proximity. The small dimensions of the antenna relative to the operating wavelength, achieved by folding back an element of the antenna provides a simple solution to such problems as antenna coupling since its small size allows it to be placed as far away as possible within the small confines of a radio communications handset. A method of operating a mobile communications arrangement is also disclosed, the arrangement comprising a microphone, an audio speaker, a transceiver, and an antenna; wherein the antenna is in the form of an inverted E.
Inventors
- 👤 Martin Stevens Smith
- 👤 Ian Paul Llewellyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:56
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; H01Q9/30; H01Q9/42
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
49 words
An inverted E antenna comprising a radiating element and a ground plane; wherein a first arm of the E is folded back towards a middle arm; the middle arm of the E is connected to ground; and a third arm of the E is connected to an RF feed.
Claim 2
Dependent Claim
49 words
An inverted E antenna comprising a radiating element and a ground plane; wherein a first arm of the E is folded back towards a middle arm; the middle arm of the E is connected to ground; and a third arm of the E is connected to an RF feed.
Claim 3
Dependent Claim
19 words
An antenna according to claim 1 wherein the radiating element is spaced a non-uniform distance from the ground plane.
Claim 4
Dependent Claim
18 words
An antenna according to claim 1 wherein the ground plane is conformal with respect to an associated housing.
Claim 5
Dependent Claim
15 words
An antenna according to claim 1 wherein the radiating element comprises a shaped metal plate.
Claim 6
Dependent Claim
17 words
An antenna according to claim 1 wherein the radiating element comprises a track printed on a dielectric.
Claim 7
Dependent Claim
16 words
An antenna according to claim 1 wherein the radiating element comprises a rigid metallic wire structure.
Claim 8
Dependent Claim
15 words
An antenna according to claim 1 wherein the ground plane comprises a two dimensional plane.
Claim 9
Independent Claim
178 words
A method of operating a mobile communications arrangement, comprising a microphone, an audio speaker, a transceiver, and an antenna; wherein the antenna is in the form of an inverted E comprising a radiating element and a ground plane; wherein a first arm of the E is folded back towards a middle arm; the middle arm of the E is connected to ground; and a third arm of the E is connected to an RF feed; the method comprising the steps of: in a receive mode; receiving radio frequency signals with the antenna, passing the radio frequency signals from the antenna to the transceiver and converting the radio frequency signals to audio modulated electrical signals and converting the audio modulated signals to audio signals with the audio speaker; and, in a transmit mode; receiving audio frequency signals with the audio speaker and converting them to audio modulated electrical signals, passing the audio modulated signals to the transceiver and converting them to radio frequency signals, passing the radio frequency signals to the antenna and radiating the signals by the antenna.
Claim 10
Independent Claim
178 words
A method of operating a mobile communications arrangement, comprising a microphone, an audio speaker, a transceiver, and an antenna; wherein the antenna is in the form of an inverted E comprising a radiating element and a ground plane; wherein a first arm of the E is folded back towards a middle arm; the middle arm of the E is connected to ground; and a third arm of the E is connected to an RF feed; the method comprising the steps of: in a receive mode; receiving radio frequency signals with the antenna, passing the radio frequency signals from the antenna to the transceiver and converting the radio frequency signals to audio modulated electrical signals and converting the audio modulated signals to audio signals with the audio speaker; and, in a transmit mode; receiving audio frequency signals with the audio speaker and converting them to audio modulated electrical signals, passing the audio modulated signals to the transceiver and converting them to radio frequency signals, passing the radio frequency signals to the antenna and radiating the signals by the antenna.
References Cited (Backward Citations)
US4516127A
Cited
EP0177362A2
Cited
GB2284712A
Cited
GB2240219A
Cited
WO1995002284A1
Cited
EP0642189A1
Cited
US5828346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-02-14 | 2003-08-16 | 2004-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-02-14 | 2007-08-16 | 2008-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-02-14 | 2011-08-16 | 2012-02-15 | $7700.00 | Window Closed / Lapsed |