Abstract #0923
A self-built two stage stable preamplifier for small coils
Xueming Cao 1 , Maxim Zaitsev 1 , Jrgen Hennig 1 , Jan G Korvink 2 , Oliver Gruschke 2 , and Elmar Fischer 1
1
Department of Radiology, University Medical
Center Freiburg, Freiburg, Germany,
2
Institute
of Microsystem Technology, Freiburg, Germany
As the coil becomes increasingly smaller and higher gain
is required for preamplifiers. However, the stability of
the preamplifier conflict with the high gain and the
possibilities of oscillation in the preamplifier
improve. The unstable performance may also because of
the different body noise resistance of the coils. Here,
we present some methods that stabilize an unstable two
stage preamplifier, while the high gain and other
parameters are kept.
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