1-Tone Nonlinear Simulations > Spectrum, Gain, Harmonic Distortion vs. Frequency & Power (w/PAE)

Description

This simulation setup is identical to the HB1ToneFPswp schematic, except that it includes two current probes and named voltage nodes for calculating power-added efficiency. It simulates the spectrum, output power, power gain, gain compression, phase distortion, harmonic distortion, power-added efficiency, high supply current, DC power consumption, and thermal dissipation of a device or amplifier, all versus available source power and frequency. A sample power amplifier is provided. You must replace this amplifier with your own device or amplifier, and you can modify the biases, as described in the note on the following page.

Needed to Use Schematic

A device or an amplifier using nonlinear model(s)

Main Schematic Settings

Bias settings, input frequency sweep range and available source power sweep range. The available source power sweep is divided into two parts, one coarse, and the other fine, for better resolution when the amplifier is being driven into compression.

Data Display Outputs

HB1TonePAE_FPswp.dds, "Spectrum, Gain, PAE, Harmonics" page:

• All versus available source power, at a frequency selected by moving a marker
  • Output power
  • Transducer power gain (power delivered to the load minus power available from the source)
  • Harmonic distortion up to the 5th, in dBc
  • Power-added efficiency
  • DC power consumption
  • High supply current
  • Thermal dissipation
  • Input and output voltage waveforms
• Gain compression between two power levels selected by markers
• Output spectrum at one input power and frequency, both selected by moving markers

HB1TonePAE_FPswp.dds, "AM-to-AM and AM-to-PM Plots" page:

• All versus available source power, at a frequency selected by moving a marker:
  • AM-to-AM, AM-to-PM, characteristics
  • Output power

Schematic Name

HB1TonePAE_FPswp

Data Display Name

HB1TonePAE_FPswp.dds

Note

Only bias supplies on the highest level schematic will be included in the PAE calculation. For example, if you replace the sample amplifier with one with the bias supplies included in the subcircuit, those supplies will not be included in the PAE calculation. On the highest level schematic, you can delete one of the two supplies and/or replace the voltage sources with current sources, and the PAE calculation will still be valid. You can modify the components in the bias network, realizing that the DC power consumption is computed as (the DC voltage at the Vs_high node) * (the DC current in the Is_high current probe) + (the DC voltage at the Vs_low node) * (the DC current in the Is_low current probe).