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Abstract #4072

A 2kW RF power amplifier for 7T proton imaging with digital pre-distortion

Stephan Orzada1,2, Mark E. Ladd1,3,4, and Harald H. Quick1,2
1Erwin L. Hahn Institute for MRI, University of Duisburg-Essen, Essen, Germany, 2High-Field and Hybrid MR Imaging, University Clinic Essen, Essen, Germany, 3Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany, 4Faculty of Physics and Astronomy and Faculty of Medicine, University of Heidelberg, Heidelberg, Germany

A 2 kW peak RF amplifier for 32-channel 7T proton imaging is presented. It is equipped with a digital pre-distortion providing a high linearity up to peak output power. The amplifier can be used for signal bandwidths of 1 MHz, making it suitable for almost any proton MR application.

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