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...

In RFID reader systems, power amplifier plays a critical rule for efficiency enhancement. A high efficiency power amplifier may not only increase the life expectancy of portable RFID devices but also reduce the reliance on heat sinks. Heat sinks usually occupy plenty of space and lead to packing difficulties. A well-designed power amplifier with high efficiency and output power may also increas...

The Class-E power amplifier is widely used due to its high efficiency, resulting from switching at zero voltage and zero slope of the switch voltage. In this paper, we extend general analytical solutions for the Class-E power amplifier to the ideal single-ended Variable-Voltage Class-E (Class-Evv) power amplifier that switches at zero slope but not necessarily at zero voltage. The theory is ver...

Radio signals typically are subject to very large transmission losses and distortions due to nonlinearities that might be added by the limited dynamic range of power amplifiers [1], [2]. Particularly, the signal gets distorted when the power amplifier is used at its full rated RF power level and/or Maximum efficiency is attained only at one single power level, usually closer to the maximum rate...

Recently, the rising the demand of Darlington products for the high data rate communication system. Darlington transistors are used in applications where a high gain is needed at a low frequency. Recently Darlington cell and Darlington topology have been reported high gain and good bandwidth for modern application. In modern communication Darlington amplifier is versatile used in low noise ampl...

This paper presents the design of a capacitive power transfer (CPT) system by using the Class-E amplifier approach. The Class-E amplifier approach is chosen to be adopted since it produces high efficiency as close as to 100%, theoretically. Based on the Class-E approach, a design of wireless power transfer system is used to transfer power to a LED lamp. The system has an output around 4.2 watts...

Performance of sense amplifier has considerable impact on the speed of caches used in microprocessors. The small difference in voltage level of bit lines of memory cell is amplified by sense amplifier. voltage mode sense amplifier reduces the power dissipation during read and increases the speed also. This paper describes voltage mode sense amplifier and current mode sense amplifier and compare...