DESIGN AND IMPLEMENTATION OF NON-LINEAR SIGNAL PROCESSING CIRCUITS

Abstract

Non-Linear signal processing circuits are used in various streams of engineering such as communication, control system, digital design, etc. Various types of signal processing methods are used according to applications and requirements. CMOS based non-linear signal processing circuit is less power consuming. In this dissertation various types of Non-Linear Circuits have been implemented such as multiplier, divider, vector magnitude calculator, sine shaper, and log and antilog amplifier. These circuits have been implanted using off the shelf available components as well as integrable versions using both bipolar as well as CMOS transistors. The off-the-shelf available building blocks used include uA741, AD844, CA3080. Log and antilog amplifier circuits are implemented using uA741, the four quadrant multiplier and divider circuit are implemented using AD844, CMOS based operational transconductance (OTA) circuit is also presented and implementation of two quadrant multiplier circuit using that OTA is presented. Translinear circuit principle is used to implement vector magnitude calculator, sine shaper circuit, and linearized four quadrant multiplier. Lastly, implementation of CMOS based squarer and multiplier is also presented.