Hand-held mobile communications radio - uses electric motor for automatic alignment of antenna with reception station to maintain transmission strength

摘要

The radio has a directional antenna (A) for transmitting the radio signals to a remote station, with a control device (ST) for aligning the antenna with the latter. Pref. the antenna is mechanically aligned with the remote station by mounting it on a rotary plate (PL), driven by an electric motor. The antenna has 2 active dipoles spaced apart by a quarter wavelength, or a similarly spaced active dipole and reflector. ADVANTAGE - Automatic adjustment of antenna alignment to compensate for movement of user.