LINC2 Pro produces simulation results
directly from the schematic page. After drawing the schematic or opening an
existing schematic, just click "Analyze" and then click "View" to see the
results.
Shown in the figure is a LINC2 analysis
of a crystal oscillator circuit. The graph shows the gain margin (magnitude of
S21 in dB) at the zero phase crossover point (P21 in degrees). After selecting
the crystal's series resistance from the "Tune" menu and adjusting it to 30 Ohms
(originally 90), the dotted curve indicates that an additional 3 dB of gain
margin is achieved.
