Wireless security device
US8780005B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2012 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Mar 15, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/526
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A wireless security device includes a nonconductive housing, a mother circuit board, a wireless expansion card, and a metal reflector. The mother circuit board and the wireless expansion card are disposed in the nonconductive housing. The mother circuit board includes a processor. The wireless expansion card includes a dielectric substrate, a ground plane, an inverted-F antenna, and an RF (radio frequency) module. The metal reflector is positioned between the mother circuit board and the wireless expansion card, and is close to the inverted-F antenna. The metal reflector is configured to reduce EMI (Electromagnetic Interference) from the mother circuit board so as to maintain performance of the inverted-F antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.