The design procedure of low-sensitivity second-and third-order class-4 Sallen and Key active resistance-capacitance (RC) allpole filters, using impedance tapering, has already been published. There a ladder structure in the positive feedback loop of an operational amplifier was used. In this paper desensitization using impedance tapering is applied to class-3 circuits with negative feedback ref...

Impedance matching is an essential part of antenna design. The input impedance of an antenna needs to be reasonably close to the amplifier impedance (e.g. 50 Ohm), otherwise the signal is reflected back to the amplifier and not radiated by the antenna. In many applications matching circuits consisting of discrete inductors and capacitors, or transmission lines are used to improve the impedance ...

In several reports issued previously, a theoretical analysis has been given for the steady-state operation of a vacuum-tube power amplifier with a complex load impedance* This theoretical work was checked experimentally with amplifiers operating in the steady state at low power levels. One application of an amplifier which sometimes must operate with a complex load impedance is in naval sonar e...

This paper presents two schemes of high performance CMOS current mirror, one of them is used for operational transconductance amplifier (OTA) in analog VLSI systems. The linearity, output impedance, bandwidth and accuracy are the most parameters to determine the performance of the current mirror. Here a comparison of two architectures based on same architecture of the amplifier is presented. Th...

For realizing a single chip microwave front-end, we studied the new design theory of impedance matching circuits for a Si-CMOS low noise amplifier (LNA) or power amplifier (PA), which are composed of coplanar waveguide (CPW) meanderline resonators and impedance inverters. We also present the simulated performances of CMOS-LNA or PA connected with input and output matching circuits. Finally, we ...

© 2016, IRJET | Impact Factor value: 4.45 | ISO 9001:2008 Certified Journal | Page 1049 PERFORMANCE EVALUATION OF DIFFERENTIAL BIO-POTENTIAL AMPLIFIER Prerna Mittal1, Padma Batra2 1M-Tech Degree in Electronics and Communication, Krishna Institute of Engineering and Technology, Ghaziabad, UPTU, India 2 Associate Professor, EC Department, Krishna Institute of Engineering and Technology, Ghaziabad...

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...

Design of the power amplifier for ultrasonic transducer excitation is presented. We assumed that the amplifier output impedance will be significantly lower than the transducer input impedance. Therefore we suggest to used the transformer as voltage step-up and impedance matching element. The transformer influence on the ultrasonic transducer bandwidth and the power transfer efficiency are analy...

Simple instrumentation amplifier circuit diagram using opamp. Equation The addition of input buffer stages makes it easy to match (impedance matching) the amplifier with the preceding stage. A single LM324 op amp Ic is a good choice. feedback differential amplifier. The LMH6550 has the an IF amplifier in high-performance communications. • Video Over TwistedSingle End to Differential Converter a...

Abstract A hybrid switching amplitude modulator for class-E2 EDGE polar transmitters is proposed. To achieve both high-efficiency and high-speed, it consists of a wideband buffered linear amplifier as a voltage source and a hysteresis-controlled switching amplifier as a dependent current source. The novel linear amplifier has a high current driving capability of approximately 160mA with a bandw...