Anthony A. Goacher

RF Power Amplifier Behavioral Modeling

If you are an engineer or RF designer working with wireless transmitter power amplifier models, this comprehensive and up-to-date review of nonlinear theory and power amplifier modeling techniques is an absolute must-have. Including a detailed treatment of nonlinear theory, as well as chapters on memory effects, implementation in commercial circuit simulators, and validation, this one-stop reference makes power amplifier modeling more accessible by connecting the mathematics with the practicalities of RF power amplifier design. Uniquely, the book explains how systematically to evaluate a models accuracy and validity, compares model types and offers recommendations as to which model to use in which situation.

New percentage linearization measures of the degree of linearization of HPA nonlinearity

A percentage linearization (PL) and a percentage linearization area (PLA) are defined and proposed as two new measures of the degree of AM-to-AM linearization, achieved by a linearization scheme, of the saturating region of nonlinear high power amplifiers (HPAs). The measures are based on defining a HPA saturation power point which is very close to the asymptotic output saturation power (AOSP) line. Here the point where the first derivative of the AM-to-AM dB power characteristic drops to 0.1 is so defined. Employing the passage through a typical pseudomorphic high electron mobility transistor solid-state power amplifier (PHEMT SSPA) of an UWC-136 8-PSK signal, as a test signal, an introductory insight into the usefulness of these linearization measures is presented.

Some new memoryless behavioural models of wireless transmitter solid state power amplifiers

This paper briefly review aspects of memoryless nonlinear power amplifier behavioural models in the context of the more popular ones - the complex power series expansion, the Saleh model, and the Bessel-Fourier (B-F) model. Other models considered are the Fourier model, the Hetrakul & Taylor model and the Berman & Mahle model. Static envelope characteristics, i.e., static AM-AM and/or AM-PM characteristics, are taken as the basis for defining a behavioural model as memoryless. Some new insights and new developments are presented including a new modified Saleh model - evolved to overcome some particular weaknesses of the Saleh model - and considerations on applying the B-F model and its linkage to the Fourier model. Some comparative considerations among models was presented, through their application to modelling an LDMOS amplifier amplifying a WCDMA signal.

RF Power Amplifier Behavioral Modeling: Contents

If you are an engineer or RF designer working with wireless transmitter power amplifier models, this comprehensive and up-to-date review of nonlinear theory and power amplifier modeling techniques is an absolute must-have. Including a detailed treatment of nonlinear theory, as well as chapters on memory effects, implementation in commercial circuit simulators, and validation, this one-stop reference makes power amplifier modeling more accessible by connecting the mathematics with the practicalities of RF power amplifier design. Uniquely, the book explains how systematically to evaluate a models accuracy and validity, compares model types and offers recommendations as to which model to use in which situation.

RF Power Amplifier Behavioral Modeling: Abbreviations

If you are an engineer or RF designer working with wireless transmitter power amplifier models, this comprehensive and up-to-date review of nonlinear theory and power amplifier modeling techniques is an absolute must-have. Including a detailed treatment of nonlinear theory, as well as chapters on memory effects, implementation in commercial circuit simulators, and validation, this one-stop reference makes power amplifier modeling more accessible by connecting the mathematics with the practicalities of RF power amplifier design. Uniquely, the book explains how systematically to evaluate a models accuracy and validity, compares model types and offers recommendations as to which model to use in which situation.

RF Power Amplifier Behavioral Modeling: Frontmatter

If you are an engineer or RF designer working with wireless transmitter power amplifier models, this comprehensive and up-to-date review of nonlinear theory and power amplifier modeling techniques is an absolute must-have. Including a detailed treatment of nonlinear theory, as well as chapters on memory effects, implementation in commercial circuit simulators, and validation, this one-stop reference makes power amplifier modeling more accessible by connecting the mathematics with the practicalities of RF power amplifier design. Uniquely, the book explains how systematically to evaluate a models accuracy and validity, compares model types and offers recommendations as to which model to use in which situation.

Simulation-based analysis of nonlinearities in multicarrier OFDM signals

A new expression for the statistical description of the output of an OFDM signal applied to a general small and large signal model of a memoryless nonlinear amplifier is derived. Based on this some new results for modulation fidelity (MF) deterioration due to power amplifier (PA) nonlinearities and its amelioration by the application of PA linearisation are presented.