| 1. |
- Isaksson, Magnus, 1969-, et al.
(författare)
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A Study of a Variable-Capacitance Drain Network's Influence on Dynamic Behavioral Modeling of an RF PA
- 2007
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Ingår i: 69th ARFTG Microwave measurement conference, Honolulu, HI, USA. ; , s. 112-116, s. 5456336-
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Konferensbidrag (refereegranskat)abstract
- An investigation of the complex-valued parameters of two different dynamic behavioral models due to changes in the drain decoupling network of a PA has been performed. The study is based on complex-envelope measurements on a real PA. The complex coefficients of the parallel Hammerstein (PH) and the optimal pole placements of the Kautz-Volterra (KV) models are analyzed. It is concluded that the parameters follow smooth, predictable functions and that the KV poles give a robust description of the PA's memory effects compared with the PH model.
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| 2. |
- Wisell, David, et al.
(författare)
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A general evaluation criteria for behavioral power amplifier modeling
- 2007
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Ingår i: 69th ARFTG Microwave Measurements Conference - Addressing Metrology Needs for Future High-Speed Information and Communications Systems. - 0780397630 - 9780780397637 ; , s. 5456311-
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Konferensbidrag (refereegranskat)abstract
- In this paper a new goodness measure for behavioral complex envelope power amplifier models is defined in the frequency domain. The measure can be calculated for any input signal using the same formulas, which makes it general and easy to use. The results will however be dependent on the input signal. The total model error, or normalized mean-square error, for power amplifier models are normally dominated by the in-band error, often mainly caused by the linear distortion. The new measure is aimed at capturing the nonlinear modeling performance of the amplifier model. This is of interest since it is most often the nonlinear, rather than the linear, distortion that causes most harm in real-life power amplifier applications.
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