Design and Simulation of Amplifier Transferring Impedance Based on RGC Technology

The RGC (Regulated Cascode) design due to making little impedance input , use for neutralizingphoto-diode noise capacitance in entrance of broadband transmitted impedance amplifier (PIA) ofoptic links. This article introduces an optimized design of RGC after studying and analyzing it.At proposed structure of CMOS 180 nm technology and simulated with HSPICE software.Results of simulating show that this structure makes a 63.6 dB . In 5.5 GHz bandwidth . Withsuch a bandwidth it can be used in optical telecommunication systems. Also results shows that incompare with similar structures , this design provides a multiplication of gain in high bandwidth.So in limiting amplifier there is no need to increasing bandwidth but switching in mentionedamplifier should be increased. In designed transimpedance amplifier with RGC structure , powerconsumption for 1.8 v, 2.6 mw power supply and returned noise in entrance of this amplifier islow.

Keywords:

RGC , returned noise to input