Harvesting ambient radio frequency electromagnetic energy for powering wireless electronic devices, sensors and sensor networks and applications thereof
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 15, 2008
Grant Date -
May 17, 2007
app pub date -
Jul 24, 2006
filing date -
Aug 4, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system and device for harvesting various frequencies and polarizations of ambient radio frequency (RF) electromagnetic (EM) energy for making a passive sensor (tag) into an autonomous passive sensor (tag) adapted to collect and store data with time-stamping and some primitive computation when necessary even when an interrogating radio frequency identification (RFID) reader is not present (not transmitting). A specific source of ambient RF EM energy may include wireless fidelity (WiFi) and/or cellular telephone base stations. The system and device may also allow for the recharging of energy storage units in active and battery assisted passive (BAP) devices. The system could be a 'smart building' that uses passive sensors with RF EM energy harvesting capability to sense environmental variables, security breaches, as well as information from 'smart appliances' that can be used for a variety of controls and can be accessed locally or remotely over the Internet or cellular networks.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully