Transmission device for controlling a high-frequency antenna of a magnetic resonance device, power amplifier unit and method for generating an amplitude-modulated target signal

摘要

Transmitting device (11, 11 ') for controlling a high-frequency antenna (16) of a magnetic resonance device with an amplitude-modulated target signal (6), a number N of identical amplifier modules (5), N being at least two, a signal conditioning device (13) and a merging device ( 15) for the output signals of the amplifier modules (5) to the target signal (6), which signal conditioning device (13) N consists of pulses (2) having a length dependent on the desired target amplitude and having a phase corresponding to the desired target phase and a desired target frequency corresponding drive signals (8) with a predetermined pulse frequency, the pulses (2) of the individual drive signals (8) being offset in time from each other by 1 / N of the pulse period (T) corresponding to the pulse frequency and each drive signal (8) each Amplifier module (5) added rt is.