Method for selecting an antenna among a plurality of antennas in an antenna diversity reception installation and antenna diversity reception installation

摘要

An antenna line (AL) in an antenna unit (A) lies at reference potential via a quiescent load resistor (RR). The antenna unit is supplied with a direct current from a receiver unit (E), the current switching a load resistance (RL) in parallel with the quiescent load resistor. The receiver unit detects that the antenna unit is switched on by the resultant reduction in impedance. To switch off the antenna unit, the direct current is switched off by the receiver and the load resistance is isolated from the quiescent load resistor, so that the receiver unit detects that the antenna unit is switched off, by the increase in impedance. An Independent claim is included for an antenna diversity receiver system with an antenna selection switch.