In this paper, a low power and high CMRR Instrumentation Amplifier is presented. It has been designed for use in Bio-Impedance (BI) applications that operate within the beta dispersion frequency range. An IA with a high CMRR and input impedance allows the extraction of the low amplitude BI signal while reducing the error signals and noise associated with the tissue and instrument interface. The...

An electronic amplifier, amplifier, or (informally) amp is an electronic device that increases the power of a signal. It does this by taking energy from a power supply and controlling the output to match the input signal shape but with a larger amplitude. Amplifier design relies on feedback mechanism. Offsets that accumulate in different stages of amplifier are corrected by feedback mechanism. ...

A Wilkinson power divider with a differential output implemented in parallel-strip-line (PSL) is proposed. Taking full advantages of the PSL technology and a three-stage cascaded design, more than 170% impedance and isolation bandwidths are obtained. Inherent to the PSL structure, the 180 differential output is frequency-independent. A class-B push–pull power amplifier employing the devised con...

The design and implementation of a fully integrated complementary metal–oxide–semiconductor (CMOS) sixth-order 2.4 Hz low-pass filter (LPF) for medical applications is presented. For the implementation of large-time constants both linearized operational transconductance amplifiers with reduced transconductance and impedance scalers schemes for grounded capacitors are employed. Experimental resu...

A simple fourth-order hyperchaotic circuit with damped harmonic oscillators is described. ANP3 and PSpice simulations including an eigenvalue study of the linearized Jacobian are presented together with a hardware implementation. The circuit contains two inductors with series resistance. two ideal capacitors and one non-linear active conductor. The Lyapunov exponents are presented to confirm th...

Here, the DC side passive harmonic reduction circuits (PHRCs) are compared from a technical and economic point of view. In researches on multipulse rectifiers (MPRs), comparison is mainly based different source load conditions, especially accurate information amount impedance not available, which has considerable impact performance MPRs. all conditions such as voltage, frequency, impedance, wel...

Predicting current harmonics in distribution networks is essential to find harmonic losses and power quality indices. In order predict the harmonics, effect of grid impedance voltage distortions on grid-connected converters need be considered. The effects these parameters can nonlinear, which complicates system analysis. Consequently, this paper investigates impacts background impedance, multi-...

A 50 to 550MHz wideband gallium nitride (GaN) HEMT power amplifier with over 43 dBm output power and 63% drain efficiency has been successfully developed. The demonstrated wideband power amplifier utilizes two GaN HEMTs and operates in a push-pull voltage mode Class D (VMCD). The design is based on a large signal simulation to optimize the power amplifier’s output power and efficiency. To assur...

An active power filter implemented with a four-leg voltage-source inverter using a predictive control scheme is presented. The use of a four-leg voltagesource inverter allows the compensation of current harmonic components, as well as unbalanced current generated by single-phase nonlinear loads. A detailed yet simple mathematical model of the active power filter, including the effect of the equ...

Second Harmonic Class-E PA Design The selected active device for the transmission-line class-E2 PA is the SD57030 transistor provided by STMicroelectronics. It has a maximum drain voltage of 65 V. In an ideal class-E PA in the optimum operating mode with 50% duty cycle and a slope of zero [5], the peak drain voltage is vDmax =3.56 VDD. Since the peak varies with load impedance, a design for vDm...