Load control device having a compact antenna

摘要

A compact antenna for use in a load control device for controlling the power delivered to an electric load and operable to transmit or receive radio frequency signals at a specified frequency is presented. The antenna comprises a first main radiating loop of conductive material having an inductance and a capacitor forming a circuit being resonant at the specified frequency, and a second feed loop of conductive material having two ends adapted to be electrically coupled to an electronic circuit. The second feed loop is substantially only magnetically coupled to the first main radiating loop. The antenna is disposed in an actuator button, which is provided in an opening of a traditional-style faceplate. The antenna extends beyond the faceplate of the load control device.