Nonlinear Behavioral Modeling Dependent on Load Reflection Coefficient Magnitude
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|Title:||Nonlinear Behavioral Modeling Dependent on Load Reflection Coefficient Magnitude||Authors:||Cai, Jialin; King, Justin B.; Zhu, Anding; Pedro, José C.; Brazil, Thomas J.||Permanent link:||http://hdl.handle.net/10197/12076||Date:||May-2015||Online since:||2021-03-31T11:17:17Z||Abstract:||A new frequency-domain nonlinear behavioral modeling technique is presented and validated in this paper. This technique extends existing Padé and poly-harmonic distortion models by including the load reflection magnitude, ΓL, as a parameter. Although a rigorous approach requires a full 2-D load-pull model to cover the entire Smith chart, simulation and experimental evidence have shown that such a 1-D model - that retains only amplitude information of the load reflection coefficient - can give accuracy close to that of a full 2-D load-pull model. Consequently, neglecting the phase constitutes an approximation that provides large benefits without appearing to lead to a severe compromise in accuracy. Furthermore, compared with traditional load-independent models, the new ΓL-dependent models provide a major improvement in model accuracy. After a discussion of the model extraction methodology, examples are provided comparing traditional load-pull X-parameter models with the model presented in this paper. The new model not only provides consistently good accuracy, but also has a much smaller model file size. Along with the examples that display the ability of the new modeling technique to predict fundamental frequency behavioral, a second harmonic example is also provided. The modeling approach is also validated using measurements results.||Funding Details:||Science Foundation Ireland||Type of material:||Journal Article||Publisher:||IEEE||Journal:||IEEE Transactions on Microwave Theory and Techniques||Volume:||63||Issue:||5||Start page:||1518||End page:||1529||Copyright (published version):||2015 IEEE||Keywords:||Load-pull model; Nonlinear; Pade model; Poly-harmonic distortion (PHD) model||DOI:||10.1109/TMTT.2015.2416232||Language:||en||Status of Item:||Peer reviewed||ISSN:||0018-9480||This item is made available under a Creative Commons License:||https://creativecommons.org/licenses/by-nc-nd/3.0/ie/|
|Appears in Collections:||Electrical and Electronic Engineering Research Collection|
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