Sien Wu1, Barbara L. Beck2,
Walker J. Turner1, Rizwan Bashirullah1, Thomas Mareci3
1Electrical and Computer Engineering,
University of Florida, Gainesville, FL, United States; 2McKnight
Brain Institute, University of Florida, Gainesville, FL, United States; 3Biochemistry
and Molecular Biology, University of Florida, Gainesville, FL, United States
This
Automatic Impedance Matching system is designed to tune and match multiple
frequency coils in order to monitor multiple nuclei of an artificial pancreas
for Type I diabetes. This system uses an impedance sensing circuit to measure
the reflected signal of the coil at the frequency of interest and a
microcontroller to tune and match the coil. A prototype of the Automatic
Impedance Matching system described in this report successfully demonstrates
the capability to tune and match a simplified double frequency coil, and the
system design can be extended to multiple frequency coils.