Study on Volterra-Laguerre behavioral model for RF power amplifier |
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| Authors: | Nan Jingchang Liu Yuanan Tang Bihua |
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| Institution: | 1. School of Electrics and Information Engineering, Liaoning Technical University, Huludao 125105, P.R.China;Beijing University of Posts and Telecommunications, Beijing 100876, P.R.China
2. Beijing University of Posts and Telecommunications, Beijing 100876, P.R.China |
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| Abstract: | Volterra series behavioral model for radio frequency(RF)power amplifier(PA)has been widely used in system-level simulation,however,high computational complexity makes this kind of model limited to"weak"nonlinearity.In order to reduce the computational complexity and the number of coefficients of Volterra series kernels,a Volterra series improved behavioral model based on Lasuerre orthogonal polynomials function,namely Volterra-Laguerre behavioral model,is proposed.Mathematical expressions of Volterra-Laguerre behavioral model is derived.and accuracy of the model is verified through comparison of measured and simulation output data from a freescale PA using MRF21030 transistor.Mathematical analysis and simulation results show that Volterra-Laguerre behavioral model has a simple structure,much less coefficients and better modeling performance than general Volterra series model.The model can be used more correctly for system-level simulation of RF PA with wideband signal. |
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| Keywords: | Volterra series laguerre orthogonal function RF power amplifier behavioral model |
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