Abstract #4072

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

Stephan Orzada^1,2, Mark E. Ladd^1,3,4, and Harald H. Quick^1,2

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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