Automobile antenna system.

摘要

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 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 x 10 3c/f(m) where c = the velocity of light and f = carrier frequency of broadcast waves.