Faculty Advisor

Bogdanov, Gene

Faculty Advisor

Ludwig, Reinhold

Abstract

The operation of MRI is based on the nuclear magnetic resonance principle. Applying a static magnetic field followed by an oscillating magnetic pulse on a volume of tissue results in the emission of an electromagnetic field at the Larmor frequency. The purpose of this MQP is to design a dual stage low noise amplifier to amplify the radio frequency signals detected by the receiver coil. In order for the amplifier to function properly, it should have a noise figure of about 0.5dB, a gain of about 30dB, and a low input impedance. In addition, it should be unconditionally stable over a broad range of frequencies. Two amplifiers for 1.5T and 4.7T MRI scanners are designed and measurements were conducted to ensure their functionality.

Publisher

Worcester Polytechnic Institute

Date Accepted

January 2007

Major

Electrical and Computer Engineering

Project Type

Major Qualifying Project

Accessibility

Restricted-WPI community only

Advisor Department

Electrical and Computer Engineering

Advisor Program

Electrical and Computer Engineering

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