EP0508567A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Improvements in and relating to antennae for a portable telephone equipment
Assignee: Lucent Technologies Wireless Ltd
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Filing: 1992-02-06
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Granted: —
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Expires: 2012-02-06
Abstract
Abstract An antenna system for portable electronic apparatus, particularly for the handset of a cordless telephone system, and comprising two antenna, a first (shown) mounted on a flap (2) and comprising a groundplane 5 and active monopole 4 fed by a coaxial feed 6 from electronic circuitry (not shown) in the main section of the handset 1. The flap is pivotally connected to the main section of the housing 1, and is folded down against the main section when not in use. Another similar antenna is fitted in the main section, and both antennae are connected to the transceiver circuitry via the same node. The two antennae are specially designed so as to introduce deliberate mismatch so as to provide an effective switching system between the two antenna without the need for separate circuit elements.
Inventors
- 👤 Michael Richard Pye
- 👤 Stephen Akira Williams
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 03:21
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/242; H01Q1/243; H04; H04B; H04B1/00; H04B1/38; H04B1/3827; H04B1/3833; H04B1/3838
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
44 words
Portable electronic apparatus having a housing made, at least in part, of insulating material, and incorporating an antenna comprising an active element and a groundplane, said active element comprising a length of conductive material disposed parallel to the groundplane and fed from one end.
Claim 2
Dependent Claim
27 words
Portable electronic apparatus as claimed in claim 1 wherein capacitor means are connected between the active element and the groundplane in order to capacitively match the antenna.
Claim 3
Dependent Claim
54 words
Portable electronic apparatus as claimed in either one of claims 1 or 2 wherein the antenna is mounted on a sheet of insulating material forming part of said housing, and comprises a first rectangular sheet of conductive material forming said groundplane, and a second, elongate, rectangular sheet of conductive material forming said active element.
Claim 4
Dependent Claim
46 words
Portable electronic apparatus as claimed in claim 3 wherein the housing is in two sections which are movable with respect to one another, and wherein said sheet forms part of one of said sections, and wherein the other section contains electronic circuitry connected to said antenna.
Claim 5
Dependent Claim
16 words
Portable electronic apparatus as claimed in claim 4 wherein said two sections are hingedly connected together.
Claim 6
Dependent Claim
33 words
Portable electronic apparatus as claimed in either one of claims 4 or 5 wherein a second antenna is disposed in or on said other section and is likewise connected to said electronic circuitry.
Claim 7
Dependent Claim
38 words
Portable electronic apparatus as claimed in claim 6 wherein said second antenna comprises an active element and a groundplane, said active element comprising a length of conductive material disposed parallel to the groundplane and fed from one end
Claim 8
Dependent Claim
45 words
Portable electronic apparatus as claimed in claim 7 wherein said second antenna is mounted on a sheet of insulating material and comprises a first rectangular sheet of conductive material forming said groundplane and a second, elongate, rectangular sheet of conductive material forming said active element.
Claim 9
Dependent Claim
26 words
Portable electronic apparatus as claimed in claim 8 wherein the sheet forming the groundplane of the second antenna further forms a groundplane for said electronic circuitry.
Claim 10
Dependent Claim
24 words
Portable electronic apparatus as claimed in either one of claims 8 or 9 including inductance tuning means placed in series with the active element
Claim 11
Dependent Claim
26 words
Portable electronic apparatus as claimed in any one of claims 6 to 10 wherein both antennae are connected to the electronic circuitry via the same node.
Claim 12
Dependent Claim
85 words
Portable electronic apparatus as claimed in claim 11 wherein, in a first relative position of said sections, the first-mentioned antenna is spaced from the electronic circuitry, and is adjusted so as to be a good electrical match to the electronic circuitry in this position and wherein, in a second relative position of said sections, the first-mentioned antenna is relatively closer to the electronic circuitry such that its proximity to that circuitry detunes the antenna and causes it to be electrically mismatched to the electronic circuitry.
Claim 13
Dependent Claim
27 words
Portable electronic apparatus as claimed in claim 12 wherein the mismatch of the first-mentioned antenna is such as to exhibit an open circuit to the electronic circuitry.
Claim 14
Dependent Claim
33 words
Portable electronic apparatus as claimed in any one of claims 11 to 13 wherein said antennae are designed such that there is an electrical mismatch between them, as seen by the electronic circuitry
Claim 15
Dependent Claim
25 words
Portable electronic apparatus as claimed in claim 14 wherein the characteristic impedance of one of said antennae is significantly higher than that of the other.
Claim 16
Dependent Claim
61 words
Portable electronic apparatus as claimed in claim 14 wherein a mechanical tuning element is attached for movement with one of said sections of the housing, said tuning element being positioned such that, as the two sections are moved with respect to one another, the element detunes one of the antennae, but not the other, thus introducing an electrical mismatch between them.
Claim 17
Dependent Claim
73 words
Portable electronic apparatus as claimed in any one of the preceding claims in the form of a handset for a cordless telephone apparatus, wherein said other of said sections comprises the main housing section incorporating transceiver circuitry and a telephone keypad, and wherein said one of said sections forms a flap pivotally mounted with respect to the main housing section, and operable to cover the keypad when the handset is not in use.
Claim 18
Dependent Claim
68 words
Portable electronic apparatus comprising a housing formed in two sections which are movable with respect to one another, said housing containing electronic circuitry including an antenna system, said antenna system comprising a first antenna mounted on one of said sections and a second antenna mounted on the other of said sections, and wherein said first and second antennae are connected to said electronic circuitry via the same node.
References Cited (Backward Citations)
No citation records indexed.
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