Title :
A battery-less WiFi-BER modulated data transmitter with ambient radio-wave energy harvesting
Author :
Ishizaki, Haruya ; Ikeda, Hidetoshi ; Yoshida, Yoichi ; Maeda, Tadashi ; Kuroda, Tadahiro ; Mizuno, Masayuki
Author_Institution :
Renesas Electron. Corp., Kawasaki, Japan
Abstract :
We have developed a new battery-less bit-error-rate modulated (BERM) data transmission technology that can directly send data to a WiFi-equipped PC without affecting WiFi communication on the PC. BER modulated data at a 5.5kbps data-rate has been successfully transmitted at a 30-cm distance between a test chip and measurement equipment. The chip also has an energy harvesting function with an active ambient-radio power searching (AAPS) architecture that enhances harvest efficiency. Harvested power was 30.8μW at a 30cm-distance from a 250mW (24dBm) emission WiFi access point (AP), and the operational frequency had a very wide range, 1.9 to 2.4GHz.
Keywords :
energy harvesting; error statistics; wireless LAN; ambient radio-wave energy harvesting; batteryless WiFi-BER modulated data transmitter; bit-error-rate; harvest efficiency; measurement equipment; test chip; Bit error rate; IEEE 802.11 Standards; Radio transmitters; Temperature measurement; Temperature sensors; Transmitting antennas;
Conference_Titel :
VLSI Circuits (VLSIC), 2011 Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-61284-175-5
