Abstract
The demand of transistors is rising in today's communication system having high data rate. Transistors are used in many applications where high gain is needed by using very low frequency. In today's communication system amplifier is used in many applications such as low noise amplifier, broadband mixer, distributed amplifier, power amplifier etc. The pair amplifier satisfy all parameters which is required by today's technology such as-high speed transmission efficiency, less power consumption and less circuitrary to be used pair is used in advanced version of small signal amplifier with additional biasing resistance which improves voltage gain and widening of bandwidth. It also removes poor frequency response of pair amplifier at higher frequency. In this paper, cadence software is used to study the circuit of two-stage amplifier. In this paper after adding biasing resistance in emitter terminal of first transistor we can increase the voltage gain, current gain, output current and output voltage of pair amplifier. GPDK 90nm technology is used in this paper.
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