eprintid: 10195902
rev_number: 7
eprint_status: archive
userid: 699
dir: disk0/10/19/59/02
datestamp: 2024-08-19 10:30:24
lastmod: 2024-08-19 10:30:24
status_changed: 2024-08-19 10:30:24
type: article
metadata_visibility: show
sword_depositor: 699
creators_name: Zhang, Yaohua
creators_name: Jiang, Dai
creators_name: Demosthenous, Andreas
title: A High-Voltage Differential SPDT T/R Switch for Ultrasound Systems
ispublished: inpress
divisions: UCL
divisions: B04
divisions: F46
keywords: Bipolar-CMOS-DMOS (BCD), MOSFET switch, high-voltage analog switch, single-pole double-throw switch, transmit/receive switch, ultrasound hand gesture recognition
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: An improved bootstrapped circuit topology is proposed for the design of a high-voltage, differential, single-pole double-throw transmit/receive switch for an ultrasound hand gesture recognition system. The differential transmit/receive switch is designed in a 0.18 μ m HV BCD technology. It is intended to interface with bimorph piezoelectric micromachined ultrasonic transducer electrodes, although a single-ended version can also interface with conventional ultrasound transducers. A comprehensive analysis has produced useful insights, namely the dependence of off-isolation on high-voltage input slew rate, and the dependence of common-mode rejection ratio on threshold mismatch and timing misalignment. In addition, an extended model has been developed to predict harmonic distortion through a DMOS transistor. Measured results verify the effectiveness of the design guidelines and switch operation. The switch circuit exhibits 67 Ω on-resistance and − 63 dB off-isolation while occupying a modest area of 289 μ m × 295 μ m. The switch achieved a figure-of-merit with 74% improvement over the state-of-the-art. To the best of the authors’ knowledge, this differential switch is the first of its kind reported for piezoelectric micromachined ultrasonic transducer biomedical ultrasound systems.
date: 2024-07-25
date_type: published
publisher: Institute of Electrical and Electronics Engineers (IEEE)
official_url: https://doi.org/10.1109/tcsi.2024.3426558
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 2301666
doi: 10.1109/tcsi.2024.3426558
lyricists_name: Jiang, Dai
lyricists_name: Demosthenous, Andreas
lyricists_name: Zhang, Yaohua
lyricists_id: DJIAN68
lyricists_id: ACDEM08
lyricists_id: YZHAJ10
actors_name: Zhang, Yaohua
actors_id: YZHAJ10
actors_role: owner
funding_acknowledgements: 899822 [European Union]
full_text_status: public
publication: IEEE Transactions on Circuits and Systems I: Regular Papers
issn: 1549-8328
citation:        Zhang, Yaohua;    Jiang, Dai;    Demosthenous, Andreas;      (2024)    A High-Voltage Differential SPDT T/R Switch for Ultrasound Systems.                   IEEE Transactions on Circuits and Systems I: Regular Papers        10.1109/tcsi.2024.3426558 <https://doi.org/10.1109/tcsi.2024.3426558>.    (In press).    Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10195902/1/FINAL%20VERSION%20%281%29.pdf