Load control device having an electrically isolated antenna
US9155172B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2012 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Feb 28, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/162
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A load control device for controlling the power delivered from a power source to an electrical load includes an antenna and a communication circuit to receive and transmit messages via radio frequency (RF) signals. The communication circuit is coupled to the power source but is capacitively coupled to the antenna. The capacitive coupling is formed through multiple layers of a printed circuit board (PCB) in which each layer includes a conductive trace that neighbors another conductive trace on an adjacent layer. The capacitive coupling provides that the antenna is electrically isolated from the communication circuit which accordingly, provides that the antenna is electrically isolated from the power source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.