
The use of mechanics to lower the dynamic range requirements of radio and clock receivers has recently reduced communication receive power requirements to near-zero levels. The power-reducing approaches go from partial-mechanical ones, where high Q mechanical circuits ease the burden on transistor circuits; to the latest all-mechanical topology, where micromechanical resonant switch (a.k.a., resoswitch) technology enables listening for incoming signals without the need for current draw, and ultimately only picowatts to receive and process bits once valid signals appear.