ADATTATORE DI ALIMENTAZIONE ELETTRICA COLLEGABILE ALLA PRESA DELLO ACCENDINO DI UN AUTOVEICOLO E COMPRENDENTE UNA PORTA DI INGRESSO USCITA A RF PER LA CONNESSIONE ALL' ANTENNA ESTERNA

The present invention provides a power adapter (10) adapted to couple an external antenna (17) to a communication device (30) by way of a cable (12) which is typically plugged into a cigarette lighter of a vehicle or some other power source at one end, and an input connector of the communication dev...

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Bibliographic Details
Main Authors DE MURO DAVID M, KALENOWSKY JOHN A, ALBERT MIKE M
Format Patent
LanguageItalian
Published 02.01.1995
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
TRANSMISSION
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Summary:The present invention provides a power adapter (10) adapted to couple an external antenna (17) to a communication device (30) by way of a cable (12) which is typically plugged into a cigarette lighter of a vehicle or some other power source at one end, and an input connector of the communication device (30) at the other. In particular, the present invention provides a simple one-piece vehicle power adapter which also provides RF input/output capability for connection to an external vehicle antenna. According to certain aspects of the invention, the adapter can be configured to have a variety of selection mechanisms. For example, the communication device could include an RF switch (34) and control circuitry for selecting either the internal or external antenna for optimum reception. Alternatively, the cable could include an external switch (70) for allowing the user to select the desired antenna. Finally, the cable could include a component which automatically actuates the switch to select the external antenna when the external antenna is connected to the communication device.
Bibliography:Application Number: IT1995RM00002