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This test bench project shows a one tone swept frequency test bench for power amplifiers at a constant output power. An extra schematic is added to help determine which output powers are possible.  

This test bench includes:

Schematics:

  • PA_One_Tone_Sweep_Freq_Constant_Power - shows the swept power result at each frequency to see which output powers are possible at each frequency, used to set the CONSTPOUT block.

 

  • PA_One_Tone_Sweep_Freq_Constant_Pout - the test bench setup.  Includes notes on where to change settings specific to your design.



  • PA_One_Tone_Sweep_Freq_Constant_Pout_Display - embeds all graphs into one display.

 

Graphs

    • DC Current: DC Current from the DC Voltage source on the output of the transistor in the DUT subcircuit, plotted at at a constant output power versus input frequency.
    • DC Drain Efficiency: DCRF measurement plotted at a constant output power versus input frequency.
    • Gain Power gain plotted at a constant output power versus input frequency.
    • Harmonic Powers: Power in the fundamental, 2nd and 3rd order harmonics at a constant output power versus input frequency.
    • Input and Output Current Waveforms: Current waveforms at the input and output of the DUT at a constant output power and frequency where the tuner controls the frequency.
    • Input and Output Voltage Waveforms: Voltage waveforms at the input and output of the DUT at a constant output power and frequency where the tuner controls the frequency.
    • PAE: Power Added Efficiency at a constant output power versus input frequency.
    • Spectrum: Power Spectrum at the input and output of the DUT at a constant output power and frequency where the tuner controls the frequency.
    • Swept Power: Total Power  output of the DUT at a swept power on the x-axis and one trace per frequency.
    • Total Harmonic Distortion: THD calculated in the output equations, at a constant output power versus input frequency.
    • Total Power: Total power at the output and power and available power at the input at a constant output power versus input frequency.

Output Equations

  • PA_One_Tone_Sweep_Freq_Constant_Pout - equations used to calculate the total harmonic distortion.  

Project Folders

  • PA_One_Tone_Sweep_Freq_Constant_Pout - Folder containing all the schematics, graphs and equations for this project. 

Importing the Test Bench

If you are unable to import the test bench automatically by clicking the Import test bench button above, click Here to do that manually.