Nonlinear Optimization Using 2-Tone Harmonic Balance with Third and Fifth Order Intercepts as Measurements

Description

This simulation setup performs a yield optimization based on a 2-tone harmonic balance analysis of the amplifier. The measurements are third order intercepts and fifth order intercepts.

Needed to Use Schematic

An amplifier schematic using nonlinear models must be inserted into the schematic. A sample schematic, Sample_Stat_PA, is initially present, inserted into the simulation schematic.

Main Schematic Settings

• Follow all the numbered steps in the upper left-hand box on this statistical optimization schematic
• Using the same parameters you initially used with the Amplifier DesignGuide, set the following:
  • Center frequency of the two input tones
  • Frequency spacing between the two tones
  • Available source power for both tones
  • Maximum order of the intermodulation terms to be calculated
  • (Source and load impedances at the fundamental and harmonic frequencies can also be set)

Data Display Options

This DesignGuide does not include data displays prepared to directly plot the yield optimization results. However, when the optimization is complete a rough estimated yield is given. To plot results after the yield optimization, from the menu select Simulate , then Update Optimization Values. This fixes the new optimized parameters on the amplifier schematic. Then a yield analysis can be simulated, using the new optimum parameters.

Schematic Name

YOS_2Tone_TOI_5OI
where YOS is Yield Optimization Schematic.