Patent ID: 10942231

Abstract:
A transmit/receive RF system for a magnetic resonance examination system is described. The transmit/receive RF system comprises an RF antenna, an RF power amplifier configured to supply electrical RF power to the RF antenna, a coupling device coupled between the RF power amplifier and the RF antenna and configured to couple out fractions of a reflected power flowing from the RF antenna toward the RF power amplifier and a forward power flowing from the RF power amplifier toward the RF antenna to output a first coupled signal VREV and a second coupled signal VFWD, a wave detector coupled to the coupling device and configured to detect amplitude and phase information of the first coupled signal VREV and the second coupled signal VFWD, and a parameter calculator coupled to the wave detector and configured to calculate an operational parameter of the RF power amplifier based on complex scattering parameters of the coupling device and the detected amplitude and phase information of the first coupled signal VREV and second coupled signal VFWD.