Seminar Title
Investigations on Reconfigurable Fractal Antennas
Seminar Type
Progress Seminar
Electronics and Communication Engineering
Speaker Name
Khushbu Patel ( Rollno : 521ec1004)
Speaker Type
Seminar Hall, EC 303
Date & Time
22 Sep 2023 5.30PM
Prof. Santanu Kumar Behera

Reconfigurable Fractal antennas have emerged as an advanced technology for wireless data transmission, reception, radio communication, and radar tracking. Nowadays the requirements for high-performance antenna systems are in huge demand to meet the need of high-end requirements in wireless applications. Reconfigurable fractal antennas are more efficient than regular patch antennas. In this context, reconfiguration characteristics with fractal geometries have a significant role in antenna applications with varying degrees of success in improving antenna characteristics. Several reconfigurable fractal monopole antennas have been investigated for wideband applications. It starts with the design and implementation of Koch fractal, hybrid fractal, reconfiguration with fractal geometry, and monopole antennas, covering their operations, electrical behavior, and performances. The performances of these designs have been studied using standard simulation tools used in industry/academia and are experimentally verified. A hexagonal-shaped reconfigurable fractal antenna is introduced in this research. The present antenna can be used with switching elements to achieve reconfiguration characteristics and has multifunction features. A frequency reconfigurable linearly polarized fractal antenna, A band reconfigurable fractal monopole antenna, and a Hybrid (frequency and polarization) reconfigurable fractal antenna are studied for their quality performances and characteristics. Properties of fractal-like space-filling and scaling have revolutionized antennas designed with fractal geometry. Techniques like partial/modified ground and DGS (Defective Ground structure) are used for obtaining a wide band with a high gain value while maintaining cross-polar discrimination to 25 dB and an omnidirectional radiation pattern. The antenna designs are well effective in the S and C-band covering the range of 2 GHz to 8 GHz. The antenna performances in terms of reflection coefficient, realized gain, radiation patterns, and current distribution are of major concern. This research aimed to address the effectiveness of reconfiguration characteristics with fractal geometries in antennas and bringing out their true advantages in antenna engineering.