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(11) | EP 0 817 306 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Improved vehicular radio antennas |
| (57) A radio antenna (9) for a vehicle, for mounting upon an exterior surface (11) of
the vehicle and for electrical connection to a coaxial cable (13) coupled to the radio
system of the vehicle, the antenna (9) comprising a mast (15) for receiving radio
signals, a base (17) for mounting upon the exterior surface (11) of the vehicle and
means (19) for electrically coupling the base (17) to the coaxial cable (13) of the
vehicle, the mast (15) being mounted on the base (17) via an electrically conductive
coil spring member (21) , one end (23) of the mast (15) being mounted upon and electrically
connected with one end (25) of the spring member, the other end (27) of the spring
member being mounted upon and electrically connected with the electrically conductive
base (17), and the base (17) including a mounting surface (29) covered by an insulating
base layer (31) for contacting the exterior surface (11) of the vehicle such that
when the antenna is mounted upon the vehicle the electrically conductive base (17)
does not touch and is not in direct electrical contact with the exterior surface of
the vehicle (11). |