Communications: radio wave antennas – Antennas – With vehicle
Patent
1985-10-25
1987-11-17
Sikes, William L.
Communications: radio wave antennas
Antennas
With vehicle
H01Q 132
Patent
active
047077018
ABSTRACT:
An automobile antenna system for detecting currents induced in a vehicle body by broadcast waves and transmitting the detected current signals to a receiver located in the vehicle body is provided without externally projected antenna poles. The system comprises high-frequency pickup means longitudinally disposed along and in close proximity with the marginal edge portion of the vehicle body, the pickup means being effective to detect surface high-frequency currents which are induced on the vehicle body and concentrated into the marginal edge of the vehicle body, for example, a vehicle roof panel, a rearwindow frame or a vehicle fender. The pickup means is spaced away from the marginal edge of the vehicle body within a range represented by the following formula: 12.times.10.sup.-3 c/f(m) where c=the velocity of light and f=the carrier frequency of broadcast waves.
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Kondo Hiroshi
Ohe Junzo
Sikes William L.
Toyota Jidosha & Kabushiki Kaisha
Wise Robert E.
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