Van Den Heuvel, Indy, Quaglia, Roberto  ORCID: https://orcid.org/0000-0003-3228-301X, Cripps, Steve C. ORCID: https://orcid.org/0000-0002-2258-951X and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830
2025.
Improved iterative envelope simulation for the efficient prediction of the impact of wideband modulated signals on power amplifier performance.
Presented at: 2025 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits,
Torino, Italy,
10-11 April 2025.
Proceedings of the International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits.
IEEE,
pp. 1-4.
10.1109/INMMIC64198.2025.10975660
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Abstract
A previously introduced Iterative Envelope Simulator is expanded upon. The new implementation uses a Matlab-controlled ADS circuit simulator, allowing for the simulation of manufacturer provided nonlinear transistor models. The model is validated with 2-tone and 256-Quadrature Amplitude Modulation (256-QAM) stimuli applied to a power amplifier with a resonant BB network. Its output is compared against 2-tone HB simulations and ADS envelope simulations. The 2-tone results show that the improved simulation captures the same trend as the HB simulator. The new model introduces the ability to predict signal linearity for complex signal modulation schemes. It is capable of predicting the issues related to the resonant networks for the 256-QAM signal, showing a significant Error Vector Magnitude (EVM) degradation when the signal envelope starts overlapping the resonant frequency, while the traditional envelope simulator does not capture this issue.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Date Type: | Published Online |
| Status: | Published |
| Schools: | Schools > Engineering |
| Publisher: | IEEE |
| ISBN: | 979-8-3315-1961-2 |
| Date of First Compliant Deposit: | 13 May 2025 |
| Date of Acceptance: | 14 February 2025 |
| Last Modified: | 22 May 2025 14:18 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/178244 |
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