IJE TRANSACTIONS A: Basics Vol. 31, No. 10 (October 2018) 1651-1658   

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K. P and K. Anuradha
( Received: July 29, 2017 – Accepted: April 26, 2018 )

Abstract    This article proposed a simple self cascode RGC amplifier configuration to increase the gain and bandwidth. The cascode amplifier eliminates the miller capacitance between input and output and facilitates high gain, high input and output impedance with high bandwidth. However, the cascode amplifier requires relatively high supply voltage for proper operation and it decreases the output voltage swing by overdrive voltage. These issues are overcome by self cascode based RGC amplifier; even though it has low bandwidth due to the presence of one of its pole at low frequency. The bandwidth and output impedance of the conventional RGC has been increased by using a split length compensation technique. To improve the overall performance of the amplifier, introduced a simple self cascode RGC without using additional passive elements. The expression of gain and output impedance for the proposed amplifier is derived using small signal analysis. The calculated value of voltage gain for the projected circuit is 58.37 db which is more than the self cascode based RGC. The power dissipation of the proposed circuit is 1.071 µWatt and it has been compared with CS, Cascode, Self cascode and SC based cascode, RGC, SC based RGC amplifiers


Keywords    Self cascode, Regulated cascode, self cascode based regulated cascode, simple self cascode RGC


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