TY - GEN
T1 - Low-threshold voltage multipliers based on floating-gate charge-pumps
AU - Huang, Chenling
AU - Chakrabartty, Shantanu
PY - 2008
Y1 - 2008
N2 - The paper presents a low-threshold voltage multiplier circuit that can be used for harvesting energy from ambient radio-frequency (RF) signals. At the core of the circuit is a charge-pump based on CMOS floating-gate transistor diodes (FGTD) whose threshold voltage can be adjusted using indirect programming. We show that the diodes can achieve threshold voltages less than 50mV, which is typically less than the conventional Schottky diodes fabricated in an equivalent process. A prototype of a 5-stage charge-pump is fabricated in a standard 0 5-μm CMOS process (Vth = 0.7V and -0.9V for nMOS and pMOS transistors respectively). Measurement results validate the functionality of the prototype for multiplying and regulating sub-threshold input signals. Using a 5-stage charge-pump we demonstrate operation at less than 300mV input signal range with an operating frequency ranging from 1-4MHz.
AB - The paper presents a low-threshold voltage multiplier circuit that can be used for harvesting energy from ambient radio-frequency (RF) signals. At the core of the circuit is a charge-pump based on CMOS floating-gate transistor diodes (FGTD) whose threshold voltage can be adjusted using indirect programming. We show that the diodes can achieve threshold voltages less than 50mV, which is typically less than the conventional Schottky diodes fabricated in an equivalent process. A prototype of a 5-stage charge-pump is fabricated in a standard 0 5-μm CMOS process (Vth = 0.7V and -0.9V for nMOS and pMOS transistors respectively). Measurement results validate the functionality of the prototype for multiplying and regulating sub-threshold input signals. Using a 5-stage charge-pump we demonstrate operation at less than 300mV input signal range with an operating frequency ranging from 1-4MHz.
UR - http://www.scopus.com/inward/record.url?scp=63649112838&partnerID=8YFLogxK
U2 - 10.1109/BIOCAS.2008.4696910
DO - 10.1109/BIOCAS.2008.4696910
M3 - Conference contribution
AN - SCOPUS:63649112838
SN - 9781424428793
T3 - 2008 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2008
SP - 205
EP - 208
BT - 2008 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2008
T2 - 2008 IEEE-BIOCAS Biomedical Circuits and Systems Conference, BIOCAS 2008
Y2 - 20 November 2008 through 22 November 2008
ER -