A self-sustaining, autonomous, wireless-sensor beacon powered from long-range, ambient, RF energy
- Resource Type
- Conference
- Authors
- Vyas, Rushi; Cook, Benjamin; Kawahara, Yoshihiro; Tentzeris, Manos
- Source
- 2013 IEEE MTT-S International Microwave Symposium Digest (MTT) Microwave Symposium Digest (IMS), 2013 IEEE MTT-S International. :1-3 Jun, 2013
- Subject
- Fields, Waves and Electromagnetics
Wireless communication
Wireless sensor networks
Digital TV
Poles and towers
Energy harvesting
Antenna measurements
wireless power transfer
energy harvesting
antenna
rectifier
PIC
microcontroller
transmitter
sensors
- Language
- ISSN
- 0149-645X
A novel embedded sensing and wireless relay mote that powers itself from long range digital TV signals is presented. With an improved antenna, RF-DC circuit, and an energy-aware embedded-firmware design, enough wireless power from a distributed TV tower network can be harnessed for wireless sensor telemetry. A microcontroller and 900 MHz transmitter for the telemetry has been powered on and sustained from ambient TV signals at previously unreported range of 6.5 km from a TV broadcast source.