Development of a remote wake Up System to drastically reduce standby power of electronic devices

摘要

In this article we present a new concept to minimize standby power of electronic devices. The proposed technology is based on RF energy transfer and DC conversion to wake up an electronic device (TV, home automation systems, etc.). In this work we present an integrated emitter and a receiver with suitable performances for home or industrial applications. This system covers the entire Industrial, Scientific and Medical (ISM) band between 2.4GHz and 2.48GHz. The originality of this work is based on the development of a direct-synthesis method to design the antennas of the emitter and the receiver. The technology used is optimal for industrial and massmarket applications. Moreover, another key-element concern the receiver composed of a rectifying circuit optimized for low RF power level (−20 dBm) and a self-maintained switch driven with the rectified voltage. The different parts of the design are presented, with a particular focus on antennas. The results are confirmed by experimental measurements and they are compliant with the expected distances.