Transmitter or receiver unit with integral aerial for vehicle antitheft system, has PCB connector formed with spare elongated contact portion which serves as antenna leaving circuit board free for components

摘要

The unit comprises a PCB carrying the necessary circuitry and a plug connector (3) with contacts (4), at least one of which is used as part of an antenna. This contact is connected to a line (7) which serves as the other part of the antenna, and is preferably formed in common with the connector contacts. The line is held within a slot in an insulated part of the connector.