公开(公告)号：US20220023670A1

公开(公告)日：2022-01-27

申请号：US17297145

申请日：2019-11-25

Applicant: Ulthera, Inc.

Inventor： Charles D. Emery ,  Wohsing P. Chen ,  Robert B. A. Adamson ,  Peeter Hugo Vihvelin ,  Daniel Zaenker ,  Nicholas A. Campbell ,  Matthew A. Wright ,  Jeffrey R. Leadbetter ,  Jeremy A. Brown

IPC: A61N7/02 ,  H03F3/217 ,  H03F3/193

Abstract: Embodiments are provided that enhance ultrasound efficacy by for example, high efficiency, signal measurement, calibration, and assurance systems with a control system radio-frequency (RE) driver configured to drive one or more focused ultrasound transducers. The RE driver can comprise one or more power amplifiers including one or more III-V semiconductors, (e.g., gallium nitride GaN, GaAs, GaSb, InP, InAs, InSb, InGaAs, AlSb, AlGaAs, and/or AlGaN) field-effect transistors to efficiently provide high power with distinct narrow-band RE signals over a wide frequency range. The RE driver can include a power measurement and/or calibration system to monitor the amplitude and phase of the RE signal output from the power amplifier and estimate the amount of RE power delivered to the ultrasound transducers.