Elizabeth Caroline Britto

Summary This research describes the detailed analysis and design of the compact complex-free structural metamaterial quad band radiating element applicable for Bluetooth, WiMAX, WLAN, and fixed-satellite service. The radiating element designed is composed of an inner angle-rotated circular Split Ring Resonator (SRR) placed within the outer square-shaped SRR interlinked by a strip to design the multiband operational characteristics and is fed by a coplanar waveguide.

Abstract Advanced modulation format is a promising solution to accomplish improved bandwidth exploitation for quality transmission in optical networks. This paper proposes a modified duobinary modulation in an optical communication network, and the proposed system is compared with the preceding modulation scheme of duobinary modulation without a precoder and duobinary modulation with a precoder. Ideally, two or more signals are transmitted over single-mode fiber using a multiplexing method.