Design of integrated parasitic element antennas for a remote wake up device

The reduction of standby power consumption is a priority in the development of electronic devices. We propose a system that minimizes this standby power in home automation or multimedia systems. This system is composed of a 2.45 GHz emitter and a receiver with a sensitivity of -22 dBm (higher than a receiver directly supplied). This receiver implies a difficult link budget contrary to classical receiver sensitivity (-80 or -90 dBm). That is why the antennas have a very important role because they must be totally optimized to avoid link budget degradation. Moreover, this system is dedicated to mass market applications. As a result, all the materials and manufacturing process concerning the antennas must be as versatile as possible to be integrated in different cases and cheap to manufacture. To satisfy these objectives, we present a generic design of parasitic element antennas that are suited to both the emitter and the receiver. Measurements results are presented to validate the design.