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Introduction

This page discusses lessons learned during the development cycle about getting Circuit Envelope to work... After looking at enough example circuits a cookbook (for lack of better description) on steps to follow to get a circuit working in the Circuit Envelope engine started to emerge. This page documents all of the steps known to date and will help you go through these steps on your circuit.

Requirement

helps to take a DUT that is working in Harmonic Balance and verify that it gives the same results with a CW signal in the Circuit Envelope simulator.  If assistance is needed with modulated signal analysis contact your local Application Engineer our the AWR support team.

Requirement

  • AWR Design Environment V14 (or greater)
  • You will typically run circuit envelope on an amplifier, mixer or modulator circuit
  • The circuit must be a fully functional non-linear Microwave Office circuit that runs in APLAC

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In the "CE Cookbook AM to AM" Circuit Schemaitc Schematic you need to 

  1. Place a subcircuit of your DUT and wire it up (including bias)

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Did you get any simulation errors? Were there model mapping errors? If it does simulate how does it compare to the original Harmonic Balance simulation?

The steady-state waveforms or AM to AM and AM to PM measurements should be nearly identical and, of course, reflect the expected device behavior.  If the results are not good please contact AWR Technical Support.

Running Your Circuit With Circuit Envelope

Now that the simple time-domain test is done it's time to a simple test your circuit using the Circuit Envelope Simulation engine.  This step compares the Circuit Envelope AM to AM and AM to PM response with the results from the test benches in the steps above.  Push the button below to add a new Circuit Envelope AM to AM and AM to PM measurement to the Graphs and simulate your design using the Circuit Envelope engine.

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Similar to the step above, did you get any simulation errors? Were there model mapping errors? If it does simulate how does it compare to the original and time domain model Harmonic Balance simulation?

As before, the steady-state waveforms or AM to AM and AM to PM measurements should be nearly identical and, of course, reflect the expected device behavior.  If the results are not good please contact AWR Technical Support.

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