Abstract #0043

5T On-Coil Current-Mode Class-D (CMCD) Amplifier with Amplitude Modulation Feedback and Voltage-Mode Class-D (VMCD) Preamplifier

Natalia Gudino¹, Matthew J. Riffe¹, Lisa Bauer², Jeremiah A. Heilman³, Mark A. Griswold⁴

¹Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States; ²Physics Department, Case Western Reserve University, Cleveland, OH, United States; ³3Quality Electrodynamics, Mayfield Village, OH, United States; ⁴Radiology Department, Case Western Reserve University, Cleveland, OH, United States

We present a Current-Mode Class-D (CMCD) Feedback amplifier with class-D preamplification that avoids the characteristic DC losses of linear preamplification. We demonstrated a good wave profile of the AM feedback system that modulates the RF pulse and preliminary images that prove successful operation of the system in the scanner.