Electronically controlled antenna and associated method for use in radio-based systems

The present invention relates to a radio-based system, in particular an RFID system or a radio location system. Effectively multipath propagation effects are to be effectively reduced. For this purpose, a base station antenna (8) by means of a plurality of radiators (7) is formed. These emitters (7) are controlled to adjust a preferred direction in which the antenna (8) by means of a feed network (11) with regard to phase and / or amplitude electronically. send the radiator (7) or receive electromagnetic waves with different phase and amplitude states. In this way electrical adjustment of the preferred transmit or receive direction. Use finds this invention particularly for RFID systems and Funktortungssysteme that on a direct Sichtverbindung between a Basisstation (1) and Zielobjekten (4) are based. Identifications and detections are to be executed with great reliability.