Comparative Analysis of Static Bias Methods for Basic Differential Amplifier -- Millimeter-wave Overmoded Circular Waveguide Tapers for ECRH Applications -- Analysis of Logical Effort Based Optimization in the Deep Sub-Micron Technologies -- A Single Electron Transistor Based Floating Point, Multiplier Realization at Room Temperature Operation -- Comparison of Total Ionizing Dose Effect on Tolerance of SCL 180nm Bulk and SOI CMOS using TCAD Simulation -- Performance Analysis of Corrugated Horn Antenna for Liquid Level Measurement Application -- Quad-Element with Penta-Band MIMO Antenna for 5G Millimeter Wave Applications -- Quad Band Planar Monopole Antenna with Polarization Diversity for FSS and SAR Application -- Design and Comparative Analysis of Reconfigurable Antenna with Compound Reconfigurability -- Fractal CSRR Metamaterial based Wearable Antenna for IoT Application -- GUI Development of IRNSS Receiver.

This book constitutes refereed proceedings of the Fourth International Conference on Emerging Technology Trends in Electronics, Communication and Networking, ET2ECN 2021. The volume covers a wide range of topics, including electronic devices, VLSI design and fabrication, photo electronic systems and applications, integrated optics, embedded systems, wireless communication, optical communication, free-space optics, signal processing, image/audio/video processing, wireless sensor networks, next-generation networks, network security, and many others. The book will serve as a valuable reference resource for academia and researchers across the globe.