Patent ID: 7573436
Filing Date: 2009-08-11
Classification: H01Q

Abstract:
1. An electrical control device for controlling an amount of power delivered from an AC power source to a controlled electrical device, the AC power source generating a line voltage at a line voltage potential, the electrical control device comprising: a power conducting semiconductor device for controlling the amount of power delivered to the controlled electrical device; a control circuit; a transmitter and/or receiver in communication with the control circuit; and an antenna coupled to the transmitter and/or receiver; the antenna adapted to receive a first signal at a specified frequency from a remote control device and/or transmit a second signal at a specified frequency to a remote control device; wherein the transmitter and/or receiver is operable to couple the first signal from the antenna to said control circuit for remotely controlling said controllably conductive device and/or couple the second signal from said control circuit to said antenna for providing a status of said controlled electrical device, the antenna comprising: a first radiating loop of conductive material having a capacitance and an inductance; the capacitance and the inductance forming a circuit being resonant at the specified frequency; a second feed loop of conductive material having two ends adapted to be electrically coupled to the transmitter and/or receiver, the second feed loop being substantially only magnetically coupled to said first radiating loop; said first radiating loop and second types feed loop each having a loop axis, the loop axes of the first radiating loop and second types feed loop being substantially parallel or coincident; wherein the first radiating loop is electrically conductively isolated from the line voltage of the AC power source.