title: Derivation of continuous wave mode output power from burst mode measurements in high-intensity ultrasound applications.
abstract: Measurement of the acoustic output power of transducers in burst mode and derivation of the results to the continuous wave (CW) case reduces heating problems during power measurements with radiation force balances and absorbing targets at high power levels, but requires the knowledge of an "effective duty factor," DReff. In this work, an alternative method for determining DReff is presented that allows the determination at any input voltage amplitude as it can be calculated from the input voltage rf signal in burst mode. Thus with this method, it is not necessary to apply CW signals at all.
authors.affiliation: Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany julian.haller@ptb.de, volker.wilkens@ptb.de.
authors.forename: Julian
authors.initials: J
authors.lastname: Haller
authors.affiliation: Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany julian.haller@ptb.de, volker.wilkens@ptb.de.
authors.forename: Volker
authors.initials: V
authors.lastname: Wilkens
mesh_terms: D008962:Models, Theoretical; D009038:Motion; D012815:Signal Processing, Computer-Assisted; D013016:Sound; D013997:Time Factors; D014159:Transducers; D014465:Ultrasonics / Q000295:instrumentation