Current conveyors are unity gain active building block having high linearity, wide dynamic range and provide higher gainbandwidth product. The current conveyors operate at low voltage supply and consume less power. It has high input impedance, low output impedance, high CMRR and high slew rate. The working principle of Current Conveyors is very simple and similar to the bipolar transistors. Tha...

Power line interference is a major problem in high-resolution biopotential measurements. Because interference coupling is mostly capacitive, shielding electrode leads and a high common-mode rejection ratio (CMRR) are quite effective in reducing power-line interference but do not completely eliminate it. We propose a model that includes both interference external to the measuring system and inte...

EWEE include following parts: GUARD and Driven-Right-Leg (DLR) systems [2, 3, 6]. First system protects wire connections (on PCB, silver contacts with differential amplifier) against electromagnetic influence. The second provides better Common Mode Rejection Rate (CMRR) coefficient in range of 20-50dB higher. Another parts of system are: silver contacts [5], instrumentation amplifier with perma...

Galvanically isolated voltage measurements are becoming increasingly important for the characterization of converter systems with fast switching Wide-Bandgap (WBG) semiconductors. A very high Common Mode Rejection Ratio (CMRR) $\mathbf {&gt;\,80\,}$</in...

A 0.5 Vrms, 12 W wirelessly powered patch type fabric sensor is presented for wearable body sensor network to continuously monitor personal bioelectric signals. Thick film electrodes are screen printed on the fabric with various metal components and their impedances of ~100k are characterized. A 2-stage nested chopped analog readout front end (AFE) is optimized for the fabric sensor with reduce...

In this paper, a low noise high gain CMOS amplifier for minute nerve signals is presented. By using a mixture of weakand strong inversion transistors, optimal noise suppression in the amplifier is achieved. A continuous-time offsetcompensation technique is utilized in order to minimize impact on the amplifier input nodes. The method for signal recovery from noisy nerve signals is presented. A p...

1. Abstract This paper presents the features of Instrumentation Amplifier for biomedical applications. This Instrumentation Amplifier is a device created from Operational Tran conductance Amplifier. It is designed to have input high impedance , output low impedance, low DC offset, low noise , high common mode rejection ratio and high power supply rejection ratio. The circuit has been integrated...

A new, compact UCLH Mk 2.5 EIT system has been developed and calibrated for EIT imaging of the head. Improvements include increased input and output impedances, increased bandwidth and improved CMRR (80 dB) and linearity over frequencies and load (0.2% on a single channel, +/-0.7% on a saline tank over 20 Hz-256 kHz and 10-65 Omega). The accuracy of the system is sufficient to image severe acut...