ANTENNA SYSTEM FOR PORTABLE RADIOTELEPHONE STATION

摘要

The antenna system comprises a first (8) and a second (7) radiating elements printed on a dielectric plate (5) of fine thickness, a first radiating element (8) for transmitting from the station to the satellite, and the second radiating element (7) for receiving signals coming from the satellite. The invention is characterised in that the dielectric plate (5) carrying the radiating elements has length and width similar to that of the radiotelephone station and is articulated about a hinge (6) enabling the dielectric plate (5) to be pressed against the back of the radiotelephone (1) when it is not being used for satellite transmission or to be unfolded by rotating about the hinge when the radiotelephone station (1) is being used for satellite transmission, and the second radiating element (7) is inserted on the dielectric plate (5) between the hinge and the first radiating element such that when the dielectric plate is in the unfolded position, the energy radiated by the first radiating element presents no risk of brain damage to the user of the portable radiotelephone station. The invention is applicable to GSM radiotelephone and satellite-earth link.