IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0447725
(2006-06-06)
|
등록번호 |
US-7592967
(2009-10-20)
|
발명자
/ 주소 |
- Mosebrook, Donald R.
- Altonen, Gregory
- Bollinger, Jr., Robert
|
출원인 / 주소 |
- Lutron Electronics Co., Inc.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
24 인용 특허 :
23 |
초록
▼
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
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.
대표청구항
▼
What is claimed is: 1. An antenna for an electrical load control device for controlling the power delivered to an electrical load, the load control device comprising a controllably conductive device for controlling the power delivered to the electrical load, a controller coupled to a control input
What is claimed is: 1. An antenna for an electrical load control device for controlling the power delivered to an electrical load, the load control device comprising a controllably conductive device for controlling the power delivered to the electrical load, a controller coupled to a control input of the controllably conductive device for control of the controllably conductive device, a transmitter and/or receiver in communication with the controller, a substantially-planar mounting yoke adapted to receive a traditional-style faceplate mounted thereto, an actuator button for providing an input to the controller, and a backcover connected to the yoke to enclose the controllably conductive device, the controller, and the transmitter and/or receiver, the actuator button mounted relative to the yoke, such that the actuator button is adapted to extend through an opening of the traditional-style faceplate when the faceplate is attached to the yoke, the antenna coupled to the transmitter and/or receiver and operable to transmit or receive radio frequency signals at a specified frequency, the antenna comprising: an antenna printed circuit board having first and second sides adapted to be disposed in a plane perpendicular to the mounting yoke; a first loop of conductive material having an inductance and a capacitance, the capacitance and the inductance forming a circuit resonant at the specified frequency, the first loop formed on the first side of the printed circuit board; and a second loop of conductive material having two ends adapted to be electrically coupled to the transmitter and/or receiver, the second loop formed on one of the sides of the printed circuit board and magnetically coupled to the first loop; wherein the antenna is positioned inside and behind the actuator button and extends through the opening of the faceplate beyond a front surface of the faceplate when the faceplate is attached to the yoke. 2. The antenna of claim 1, wherein the second loop is only magnetically coupled to the first loop and electrically insulated from the first loop. 3. The antenna of claim 2, wherein the second loop of conductive material is formed on the second side of the printed circuit board. 4. The antenna of claim 1, wherein the electrical load comprises a lighting load and the load control device comprises a dimmer switch. 5. The antenna of claim 4, wherein the load control device comprises a dimmer printed circuit board enclosed by the yoke and the backcover, the controllably conductive device, the controller, and the transmitter and/or receiver mounted to the dimmer printed circuit board, and wherein the antenna printed circuit board is connected to the dimmer printed circuit board, such that the antenna printed circuit board is disposed in a plane perpendicular to the dimmer printed circuit board. 6. The antenna of claim 5, wherein the antenna printed circuit board comprises terminals connected to the dimmer printed circuit board. 7. The antenna of claim 6, wherein the first loop of conductive material is connected to a circuit common of the dimmer printed circuit board via at least one of the terminals, and the second loop of conductive material is connected to the transmitter and/or receiver via another one of the terminals. 8. The antenna of claim 1, wherein the first loop of conductive material intersects with the second loop of conductive material. 9. The antenna of claim 8, wherein the second loop of conductive material is formed on the first side of the antenna printed circuit board. 10. The antenna of claim 9, wherein the antenna comprises a trace of conductive material provided on the second side of the antenna printed circuit board, the trace electrically connected to the first loop of conductive material on the first side of the antenna printed circuit board through a plurality of vias. 11. The antenna of claim 1, wherein the first loop of conductive material comprises a break and the capacitance of the first loop comprises a capacitor provided across the break. 12. The antenna of claim 1, wherein a first current flows in the first loop of conductive material when a second current flows through the second loop of conductive material, the first current having a magnitude larger than the magnitude of the second current. 13. The antenna of claim 1, wherein the faceplate comprises a metal faceplate.
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