Increasing magnetic field strength can improve signal-to-noise ratio (SNR) of MRI [1] and it requires higher power capability and fidelity from RF Power Amplifier (RFPA). Meanwhile, to reduce B1 inhomogeneity at high field usually requires multi-channel parallel transmission (pTx) technique. In this study, we present a method to design RFPA with high power capability and output linearity, and with configurable number of transmit channels so as to meet different RF coil and load requirements.
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