RF power amplifier linearity compensation for MRI systems
Name
717630659-MIT.pdf
Description
Full printable version
Size
4.36 MB
Format
Adobe PDF
Checksum (MD5)
4494485c2f4ecfd205ffff29874d9291
Author(s)
Torres Chico, Gabriel
Advisor(s)
Ravi Sundar and Elfar Adalsteinsson.
Alternative Title
Radio frequency power amplifier linearity compensation for magnetic resonance imaging systems
Date Issued
2010
Publisher
Massachusetts Institute of Technology
Abstract
In this thesis, a polar-feedback linearization system for use with MRI RF power amplifiers was designed and simulated. The design here presented is intended to replace Analogic's (located in Peabody, Massachusetts) feed-forward, digital linearization scheme. This involved the selection and testing of components meeting the stringent specifications required for a high enough level of fidelity, as well as a simulation of the amplitude loop of the linearization system designed using the data acquired from one of Analogic's RF power amplifiers and the components selected. The intention of the simulation is to show that a polar-feedback solution is an effective method for linearizing the response of the RF power amplifier. A protype system to test the feasibility of the design in real conditions was also constructed.
Description
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 45-46).
Subjects
Electrical Engineering and Computer Science.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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