RF Electronics Chapter 6: Oscillators Page 181
2022, C. J. Kikkert, James Cook University, ISBN 978-0-6486803-9-0.
The non-linear analysis can also be used to determine the Phase Noise of the oscillator
[3]. The OSCNOISE measurement (Element MeasDevice Controls OSCNOISE)
allows the phase noise of the oscillator to be measured as shown in figure 6.13. The phase
noise will depend on the Q of the resonant network as well as other parameters, such as
the noise figure of the amplifier and the amplifier power level and the loading that the
amplifier places on the resonant network. Being able to change the circuit elements in
figure 6.10 and observe the effect of that change on the phase noise is a great advantage
in designing good oscillators. For AWRDE V15 and V16 FREQ=1000 MHz is indicated
in the markers, even though the phase noise is evaluated at 100 MHz.
Figure 6.13. Phase noise of the oscillator using non-linear (harmonic balance) analysis.
Figure 6.14. Schematic for determining the oscillator frequency versus the resonating inductor.
RF Electronics: Design and Simulation
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