EP0366393A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Antenna for radio telephone
Assignee: Nokia Oyj
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Filing: 1989-10-23
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Granted: —
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Expires: 2009-10-23
Abstract
Abstract The present device concerns a small-size antenna for radio telephone. The antenna comprises two parallel, mutually spaced plates (21,22), the first plate (21) being electrically conductive and the second plate (22) being e.g. a glass fibre circuit board of which one surface is metal-coated and on the other surface, facing the first plate (21), are disposed second or higher-order matching circuits (S) implemented with separate components.
Inventors
- 👤 Timo Saarnimo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 02:53
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/242; H01Q1/243
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
107 words
An antenna for a radio telephone, comprising opposing, parallel plates (21,22) disposed at a distance from one another, wherebetween is advantageously placed an insulating material layer (23), characterized in that the first layer (21) is an electrically conducive plate and the second plate (22) is an insulator plate, on one surface of the latter, opposite to the first plate (21), is disposed a substantially uniform metal layer which acts as ground plane, and on the other surface, facing the first plate (21), is disposed a matching circuit (S) so as to match the antenna impedance with the impedance of the antenna input lead of the radio telephone.
Claim 2
Dependent Claim
107 words
An antenna for a radio telephone, comprising opposing, parallel plates (21,22) disposed at a distance from one another, wherebetween is advantageously placed an insulating material layer (23), characterized in that the first layer (21) is an electrically conducive plate and the second plate (22) is an insulator plate, on one surface of the latter, opposite to the first plate (21), is disposed a substantially uniform metal layer which acts as ground plane, and on the other surface, facing the first plate (21), is disposed a matching circuit (S) so as to match the antenna impedance with the impedance of the antenna input lead of the radio telephone.
Claim 3
Dependent Claim
29 words
Antenna for radio telephone according to claim 1, characterized in that the matching circuit (S) is coupled with the first, electrically conducive plate (21) by a flat lead (24).
Claim 4
Dependent Claim
21 words
Antenna for radio telephone according to claim 1, characterized in that the matching circuit (S) has been implemented with discrete components.
Claim 5
Dependent Claim
22 words
Antenna for radio telephone according to claim 1, characterized in that the matching circuit (S) is of the second or higher order.
Claim 6
Dependent Claim
29 words
Antenna for radio telephone according to claim 1, characterized in that the second plate (22) is provided with a connector for connecting the antenna to the antenna input lead.
Claim 7
Dependent Claim
21 words
Antenna for radio telephone according to claim 1, characterized in that the second plate (22) is a glass fibre circuit board.
Claim 8
Dependent Claim
23 words
Antenna for radio telephone according to claim 1, characterized in that the antenna has been integrated inside the housing of the radio telephone.
Claim 9
Dependent Claim
29 words
Antenna for radio telephone according to claim 7, characterized in that the matching circuit (S) is located on the circuit board of the radio unit of the radio telephone.
References Cited (Backward Citations)
No citation records indexed.
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