3.4 an Ultrasound-Powering TX with Standing-Wave Peak Tracking Employing Adiabatic Power Sensing Achieving 82% Power-Tracking Accuracy and <90ms Settling Time for Brain Implants
Abstract
An ultrasound powering TX ASIC for brain implants with autonomous on-chip standingwave peak tracking for RX power (PDL) regulation is presented. With a proposed adiabatic power-sensing scheme, the TX consumes$43 \mu \mathrm{W}$for power tracking, and the system achieves a settling time of$2.7\times$with a power-tracking accuracy of 82%.
Fields of Study & Subjects
Ultrasound Imaging and Elastography
Wireless Power Transfer Systems
Ultrasound and Hyperthermia Applications
Publication details
- Journal / source
- 2026 IEEE International Solid-State Circuits Conference (ISSCC)
- Publisher
- IEEE
- Pages
- 70–72
- Publication date
- 15 February 2026