Meeting Banner
Abstract #0547

A Comparison of Isolating Amplifier Architectures

Neal Hollingsworth 1 , Katherine Moody 1 , Jon-Fredrik Nielsen 1 , Douglas Noll 1 , Mary Preston McDougall 1,2 , and Steven Wright 1,2

1 Electrical Engineering, Texas A&M University, College Station, Texas, United States, 2 Biomedical Engineering, Texas A&M University, College Station, Texas, United States

Transmit systems have historically been single channel and used to excite a simple slice or slab, however the desire to use spatially selective RF pulses has driven an interest in using the Transmit SENSE to accelerate excitation. This requires the array to have known and stable patterns, but coupled arrays are sensitive to varying loads. Current source and low output impedance amplifiers have been suggested for decoupling transmit arrays. We have constructed current source, ultra-low output impedance, and standard power amplifiers to investigate the strengths of different architectures by comparing the peak-power and isolation of the different amplifier architectures.

This abstract and the presentation materials are available to members only; a login is required.

Join Here