8/26/2023 0 Comments Smith chart series shuntAt the end of the example, you will notice that the overall gain and noise still met the requirement. However, this approach will also reduce gain and add noise. One way to stabilize an amplifier is to cascade a shunt resistor at the output of the amplifier. This makes amplifier stabilization necessary. However, when a GammaS that gives a suitable compromise between gain and noise is found, the matching GammaL always falls outside the output stable region. The output stable region is shaded in the above figure. In order to make the amplifier stable, GammaS must be in the input stable region and the matching GammaL must be in the output stable region. Because both the S11 and S22 parameters of the amplifier are less than unity in magnitude, both the input and output stable region contain the center of the Smith chart.
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