TY  - GEN
TI  - A Differential SPDT T/R Switch for PMUT Biomedical Ultrasound Systems
CY  - Singapore
SN  - 2158-1525
Y1  - 2024/07/02/
AV  - public
N2  - This paper presents a differential T/R SPDT switch, designed in a 0.18 ?m HV BCD technology for PMUTbased biomedical ultrasound systems. It incorporates a bootstrapping technique to pass high-voltage pulses and a shunt branch for improved isolation. The differential T/R switch is designed to interface with bimorph electrodes although a singleended version can also interface with conventional PZT/CMUT transducers. Post-layout simulation results show that the switch circuit exhibits 64 ? on-resistance and -62 dB off-isolation. A figure-of-merit is proposed to compare ultrasound T/R switches. To the best of the authors' knowledge, this differential switch is the first of its kind being reported for PMUT biomedical ultrasound systems.
T3  - IEEE International Symposium on Circuits and Systems (ISCAS)
ID  - discovery10195904
UR  - https://doi.org/10.1109/ISCAS58744.2024.10558310
N1  - This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions.
KW  - CMOS integrated circuit
KW  -  human-machine interface
KW  -  PMUT
KW  -  SPDT switch
KW  -  T/R switch
KW  -  ultrasound hand gesture recognition
PB  - IEEE
A1  - Zhang, Y
A1  - Jiang, D
A1  - Demosthenous, A
ER  -