Ethan Green
Signal Transmitter-Receiver Assembly for MRI
• Description: T-box diode protection isolates RF transmission and signal acquisition stages. λ/4 cables transform impedance between T-box and preamp stages. • Problem: Previous assembly was designed for lower frequency and exhibited high noise. • Solution: Acquired a low-noise preamplifier for specified signal frequency. Designed a linear voltage regulator that provides non-standard voltages to the preamp at low noise. Constructed a metal case with a copper ground plane that properly grounds each component, suppressing noise.