Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

In this paper, we propose a dual band microstrip patch antenna on a dielectric substrate with Complementary Split Ring Resonators (CSRR) employed in the ground plane. At first, the conventional microstrip patch antenna (MPA) designed for 3.6GHz and then the miniaturization and dual band resonance achieved by introducing single complementary split ring in the ground plane. Resonant frequency, gain and radiation characteristics are examined for various lengths of CSRR. The simulation results demonstrated that significant size reduction and dual band operation are feasible for a microstrip antenna without increasing the size by using the CSRR loaded ground plane. Simply by varying the length of the CSRR, the variation in the lower resonant frequency is highly observed from 3 GHz to 1.2 GHz. Consequently, the proposed antenna achieves around a 70% reduction in the resonant frequency as well as 89% reduction in the radiating patch size compared to the conventional microstrip antenna. © 2013 IEEE.

Department of Communication Engineering

School of Electronics Engineering

Vellore Campus

World University root node

2013 IEEE International Conference on Computational Intelligence and Computing Research, IEEE ICCIC 2013

A compact CSRR loaded dual band microstrip patch antenna for wireless applications

Co-Planar Waveguide (CPW) dual Band Pass Filter (BPF) consisting of Koch fractal structure is etched on the CPW plane. It produces a dual pass band with insertion loss below 0.7dB. Out of band rejection is above -15 db. Bandwidth of the proposed dual band filter can be controlled by varying the gap width of the CPW plane. Resonant frequencies can be varied by varying the size of the Koch curve etched. Also in order to increase the out of band rejection split ring resonators are placed on both sides of the substrate. In order to have a better out of band rejection a bi-Iayer substrate is taken so as to place SRRs on both sides of the CPW metal layer. Due to the self-similar and space filling properties of fractal structure the proposed structure is compact and it is compatible with PCB and MMIC fabrication technologies, which is of great interest for full integration of communication transceiver front ends. © 2013 IEEE.

IFIP International Conference on Wireless and Optical Communications Networks, WOCN

Dual band CPW filter using Koch Fractal structure

The video sequences provide more information than the still images about how objects and scenarios change over time. However, video needs more space for storage and wider bandwidth for transmission. Hence, more challenges are encountered in retrieval and event detection in large data sets during the visual tracking. In the proposed method, the object planes are segmented properly and the motion parameters are derived for each plane to achieve a better compression ratio. Most of the existing tracking algorithms in dynamic scenes consider the target alone and the background information are often ignored. Therefore, they are failed to track the target. In order to optimize the existing system, a robust visual tracking algorithm is to be developed which will adapt the drastic changes of target appearance without background influence. The initial occlusion of non target objects in the background can effectively be addressed by the integration of multiple cues and spatial information in target representation. With the combination of motion information and detection methods, the target can be reacquired when complete occlusion of target occurs. © 2012 IEEE.

2012 International Conference on Informatics, Electronics and Vision, ICIEV 2012

Adaptive visual tracking system using artificial intelligence

The ever-increasing need for mobile communication and the emergence of newer technologies require an efficient design of antennae of smaller size for wider frequency range applications such as Wi-MAX. It is an enormous challenge. Microstrip patch antennae have found extensive application in compact wireless communication system. They have advantages of low-profile, conformability, low-cost fabrication and ease of integration with feed networks. This research analyses different feeding techniques and the effect of dielectric constant used for microstrip patch design. The main objective is to design and characterize pin-fed rectangular microstrip patch antenna. The characterization includes the effect of antennae dimensions (length and width), substrate dielectric constant (r) and substrate thickness (t) on the radiation parameters of gain, return loss and bandwidth. The simulations have been carried out on high frequency simulation software. Two different materials of Teflon (dielectric constant 2.2) and glass epoxy (dielectric constant 4.4) are analyzed for substrate design. The simulated results are compared for analysis. The compact rectangular microstrip patch antenna design procedure for cellular phones (Wi-Max) is illustrated. © 2011 IEEE.