Welcome to Journal of Network Communications and Emerging Technologies (JNCET)

Volume 11, Issue 9, September (2021)                               Cover Page and Table of Contents

S.No	Title & Authors	Full Text
1	Design of Multiband Miniaturized Antenna using Defected Ground Structures for Mobile Communications G. Guru Prasad, G. Senthil Kumar Abstract - Multiband antennas play a significant role in various modern wireless communication systems. Commonly microstrip antenna is preferred due to its small size and low cost. But it is capable of functioning at a single resonant frequency. To function microstrip antenna in various chosen frequencies, slots were being made on a patch of different shapes and positions. Including Metamaterial technology in antenna design reduces the actual dimensions of the antenna. Embedding slots on the patch reduces the Gain of the antenna. Hence Rectangular, Circular and Elliptical shaped defected ground structures were used to enhance the antenna's Gain. In this paper, a rectangular-shaped patch antenna is designed at 2.4GHz frequency, and 18 rectangular slots of dimension 2.5mmx3.5mm are made on corner surfaces of the patch, and a dumbbell-shaped slot is made on the center of the patch. The antenna is operated at four different frequency bands 1.5GHz-2.4GHz, 3.4GHz-4.3GHz, 6.1GHz-7.9GHz, 9.4GHz-10GHz. For rectangular defected ground structure, 4.4dBi Gain is obtained. For circular defected ground structure, 4.6dBi Gain is obtained. For elliptical defected ground structure, 4.8dBi Gain is obtained. The proposed multiband miniaturized antenna can be used for mobile communications covering G.P.S., Wi-Fi, W.I.M.A.X., V.O.L.T.E. and 5G bands.	Download