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Abstract #1861

Optimised LNAs for 3 T, 7 T & 9.4 T

Andreas Peter1, Jan G. Korvink1,2

1Department of Microsystems Engineering - IMTEK, University of Freiburg, Freiburg, Germany; 2Freiburg Institute of Advanced Studies (FRIAS), University of Freiburg, Freiburg, Germany

We present the design and optimisation of a novel single and dual-stage low-Z LNAs for 3 T, 7 T and 9.4 T. Cascaded two-port networks represent the small-signal behaviour of the LNA. Matlab is used to optimise the component values to fulfil the desired matching conditions at the input and the output of the LNA together with a minimal noise figure, a maximum gain and unconditional stability. A gain of 38 dB together with a noise-figure of 0.3 dB was achieved at 7 T.