TY - GEN
T1 - Low-power RF energy harvester circuit design for wearable medical applications
AU - Oh, Taeho
AU - Hassan, Omiya
AU - Shamsir, Samira
AU - Islam, Syed K.
N1 - Publisher Copyright:
© 2019 The authors; USNC-URSI and IEEE will have full rights to publish, market, put on Xplore, etc.
PY - 2019/5/10
Y1 - 2019/5/10
N2 - Electromagnetic based energy harvesting systems are being widely researched with radio frequency (RF) as their energy source. RF energy is preferred due to its availability and characteristics of transferring energy remotely and in all directions. This paper presents a newly design low-power CMOS full-bridge rectifier which works as the receiver of the harvesting system. The proposed rectifier scheme includes two NMOS and two PMOS devices and they are realized in a standard 130nm CMOS process. The work is focused on RF signals of around 900 MHz. To achieve stable energy transmission between the antenna and the proposed AC-DC rectifier, an impedance matching network is designed with values of capacitor and inductor of 550fF and 45nH, respectively. A DC-DC converter with a Maximum Power Point Tracking (MPPT) system is designed for storing energy from the RF signal with minimum current consumption. The peak efficiency of this design is about 5% at 10 dBm. The overall system is very light-weight and requires no external wiring and connection.
AB - Electromagnetic based energy harvesting systems are being widely researched with radio frequency (RF) as their energy source. RF energy is preferred due to its availability and characteristics of transferring energy remotely and in all directions. This paper presents a newly design low-power CMOS full-bridge rectifier which works as the receiver of the harvesting system. The proposed rectifier scheme includes two NMOS and two PMOS devices and they are realized in a standard 130nm CMOS process. The work is focused on RF signals of around 900 MHz. To achieve stable energy transmission between the antenna and the proposed AC-DC rectifier, an impedance matching network is designed with values of capacitor and inductor of 550fF and 45nH, respectively. A DC-DC converter with a Maximum Power Point Tracking (MPPT) system is designed for storing energy from the RF signal with minimum current consumption. The peak efficiency of this design is about 5% at 10 dBm. The overall system is very light-weight and requires no external wiring and connection.
KW - CMOS integrated circuits
KW - biomedical equipment
KW - energy harvesting
KW - medical services
KW - receivers
KW - wearable sensors
UR - http://www.scopus.com/inward/record.url?scp=85066630324&partnerID=8YFLogxK
UR - https://doi.org/10.23919/USNC-URSI-NRSM.2019.8712872
U2 - 10.23919/USNC-URSI-NRSM.2019.8712872
DO - 10.23919/USNC-URSI-NRSM.2019.8712872
M3 - Conference contribution
AN - SCOPUS:85066630324
T3 - 2019 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2019
BT - 2019 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2019
Y2 - 9 January 2019 through 12 January 2019
ER -