EP0182497A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Automobile antenna
Assignee: Toyota Motor Corp
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Filing: 1985-10-16
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Granted: —
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Expires: 2005-10-16
Abstract
Abstract The present invention provides an automobile antenna system for detecting high-frequency surface currents induced on the vehicle body by external broadcast waves and supplying the detected signals to various built-in receivers. The automobile antenna system includes a high-frequency pick-up device positioned on the vehicle body at a pillar along the length thereof at which there is less noise and the density of the broadcast waves is increased.
Inventors
- 👤 Junzo Ohe
- 👤 Hiroshi Kondo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 14:32
CPC Classifications
H; H01; H01Q; H01Q7/00; H01Q1/00; H01Q1/27; H01Q1/32; H01Q1/325; H01Q1/3283
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
46 words
An automobile antenna system comprising high-frequency pick-up means disposed on the vehicle body at a pillar and extending along the length of said pillar, whereby high-frequency surface currents induced on the vehicle body by external broadcast waves and concentrically flowing in said pillar can be detected.
Claim 2
Dependent Claim
46 words
An automobile antenna system comprising high-frequency pick-up means disposed on the vehicle body at a pillar and extending along the length of said pillar, whereby high-frequency surface currents induced on the vehicle body by external broadcast waves and concentrically flowing in said pillar can be detected.
Claim 3
Dependent Claim
48 words
An automobile antenna system as defined in claim 1 wherein said high-frequency pick-up means includes a loop antenna fixedly mounted on said pillar along the length thereof, said loop antenna being adapted to electromagnetically detect a magnetic flux formed by the high-frequency surface currents flowing in said pillar.
Claim 4
Dependent Claim
49 words
An automobile antenna system as defined in claim 1 wherein said high-frequency pick-up means includes detecting electrode means arranged in close proximity to said pillar to form an electrostatic coupling between said pillar and said detecting electrode means, said electrostatic coupling being used to detect the high-frequency surface currents.
Claim 5
Dependent Claim
28 words
An automobile antenna system as defined in claim 1 wherein said high-frequency pick-up means receives broadcast waves belonging to frequency bands equal to or higher than 50 MHz.
Claim 6
Dependent Claim
65 words
An automobile antenna system as defined in claim 2 wherein said high-frequency pick-up means includes a casing of electrically conductive material for shielding an external electromagnetic field and a loop antenna mounted. within said casing, said casing including an opening formed therein at one side through which said antenna is externally exposed in close proximity to the pillar in which the high-frequency surface currents flow.
Claim 7
Dependent Claim
47 words
An automobile antenna system as defined in claim 5 wherein said high-frequency pick-up means is inserted into and attached to the interior of said pillar through an opening formed in a pillar leg plate, said loop antenna being positioned in close proximity to said pillar leg plate.
References Cited (Backward Citations)
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