The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 2008
Filed:
Jun. 21, 2004
Spencer L. Webb, Pelham, NH (US);
Stephen S. Thompson, London, GB;
Gregory S. Altonen, Easton, PA (US);
Edward M. Felegy, Jr., Macungie, PA (US);
Siddharth P. Sinha, London, GB;
Spencer L. Webb, Pelham, NH (US);
Stephen S. Thompson, London, GB;
Gregory S. Altonen, Easton, PA (US);
Edward M. Felegy, Jr., Macungie, PA (US);
Siddharth P. Sinha, London, GB;
Lutron Electronics Co., Ltd., Coopersburg, PA (US);
Abstract
A compact antenna for use in a 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 loop of conductive material having a capacitance and an inductance forming a circuit being resonant at the specified frequency, and a second loop of conductive material having two ends adapted to be electrically coupled to an electronic circuit. The second loop is substantially only magnetically coupled to the first loop and is electrically isolated from the first loop. In a first embodiment of the antenna, the first and second loops are formed on respective first and second printed circuit boards, which allow for a small, low-cost antenna that is easy to manufacture and maximizes efficiency. When the antenna is installed in a load control device, such as a dimmer, the first loop of the antenna is mounted on an outer surface of the device. The second loop of the antenna may be at a high-voltage potential such as line voltage.