Zhang, Y;
Jiang, D;
Demosthenous, A;
(2024)
A Differential SPDT T/R Switch for PMUT Biomedical Ultrasound Systems.
In:
Proceedings of the 2024 IEEE International Symposium on Circuits and Systems (ISCAS).
IEEE: Singapore.
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Abstract
This paper presents a differential T/R SPDT switch, designed in a 0.18 μm 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 Ω 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.
| Type: | Proceedings paper |
|---|---|
| Title: | A Differential SPDT T/R Switch for PMUT Biomedical Ultrasound Systems |
| Event: | 2024 IEEE International Symposium on Circuits and Systems (ISCAS) |
| Dates: | 19 May 2024 - 22 May 2024 |
| ISBN-13: | 979-8-3503-3099-1 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/ISCAS58744.2024.10558310 |
| Publisher version: | https://doi.org/10.1109/ISCAS58744.2024.10558310 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | CMOS integrated circuit, human-machine interface, PMUT, SPDT switch, T/R switch, ultrasound hand gesture recognition |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10195904 |
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