Equivalent Linearization and Monte Carlo Simulation are the most important techniques in analyzing large non-linear structural systems under random excitation. This paper reviews the development and the state-of-the-art of Equivalent Linearization and Monte Carlo Simulation in stochastic structural dynamics. General Remarks An extensive benchmark study [114] has revealed that most of the comput...

This paper presents an improved linearity variable-gain amplifier (VGA) in 0.18-µm CMOS technology. The lineari­ty improvement is resulted from employing a new combinational technique, which utilizes third-order-intermodulation (IM3) cancellation mechanism using second-order-intermodul­ation (­IM2) injection, and intermodulation distortion (IMD) sinking techniques. The proposed VGA gain cell co...

The fundamental problem of pulse-width modulation (PWM) based open-loop digital Class-D audio power amplifiers is the inherent nonlinearity of the PWM process, which necessitates the application of a precompensating linearization algorithm. Severe technical difficulties arising from the stringent speed requirements of both electronic circuitry, and digital signal processing devices make the imp...

Widespread adoption of higher order modulation schemes, larger signal bandwidths and higher operating frequencies, to enable higher data throughput in communication links like 5G, places increasingly tough demands on the frontend. Signal fidelity is often enhanced with linearization. The greater number of RF chains and signal bandwidth in 5G Frontends mean that DPD (Digital PreDistortion) may n...

Digital predistortion (DPD) based on Volterra models is commonly employed to counteract the nonlinear distortion of power amplifiers. However, when concurrent dual-band signals are transmitted, 2-D DPD required. In this work, upgrading a standard model proposed and justified using multinomial theorem. The linearization performance current proposal has been compared unextended model. Fifth gener...

Most industrial processes are nonlinear systems, the control method applied consisting of a linear controller designed for the linear approximation of the nonlinear system around an operating point. However, even though the design of a linear controller is rather straightforward, the result may prove to be unsatisfactorily when applied to the nonlinear system. The natural consequence is to use ...

Presently there exists a great demand for wireless systems that achieve high data transmission rates while using as little power and bandwidth as possible. Maximum data transfer for a given channel width demands sophisticated modulation techniques, the best of which require a linear power amplifier (PA). The strong tradeoff between linearity and power efficiency in PA’s has motivated research i...