GRD Journals | Global Research and Development Journal for Engineering | National Conference on Advancement in Emerging Technologies (NCAET'18) | March 2018
e-ISSN: 2455-5703
Design and Analysis of 6-Slotted Multi-Band Microstrip Antenna for use in Mobile Communications 1Rajarajan.
K 2Sudarsanan. S 1,2 Department of Electronics and Communication Engineering 1,2 Meenakshi Sundararajan Engineering College Chennai, India Abstract In this paper, a multi - band patch antenna has been designed for mobile communication. It consis ts of 6 rectangular slots. The antenna has been designed using FR-4 substrate (Effective Permittivity 4.3 lossy tangent 0.025). The software that is used for design simulation and analysis is CST. Defective ground structure (DGS) has been used to improve the return loss characteristics. The antenna radiates at 7 desirable frequencies which are: 2G (1.8 GHz), 3G (2.1 GHz), 4G (2.3 GHz), 5G (3.3 GHz), Wi - Fi (2.4 GHz and 5.9 GHz), and Wi-Max (4.2 GHz). Keyword- Multi-Band, DGS, CST, Mobile Communication __________________________________________________________________________________________________
I. INTRODUCTION Thriving mobile communication technology imparts the need for compact, diverse and compatible antenna systems, a multi-band antenna serves this need greatly. These types of antennas are preferred because of their simple design and manufacturing procedures. This paper proposes a novel design of a multi-band antenna for mobiles. The design consists of 5 slots which are of equal length and are equally spaced from each other. And a slot of different dimensions is etched out between first two slots. Defective ground structure has been employed to improve the return loss minima. The DGS structure is of meander lines configuration. The choice of material for substrate is FR-4 epoxy with a standard thickness of 1.6 mm. Feed structure is a microstrip path line in-offset type. The obtained frequency bands are 2G, 3G, 4G, 5G (Proposed for India - 3.3 GHz), Wi-Max, Wi-Fi (2.4 GHz and 5.9 GHz). Simulation tool used is Computer Simulation Technology Studio. The main objective of this paper is to design an antenna which operates in all the existing mobile communication frequency bands (bands used in India only) and upcoming 5G band that has been recently allocated by the Government of India and Telecom Regulating Authority of India.
II. ANTENNA DESIGN The antenna consists of a patch along with the feed at the top layer, substrate at the middle and a ground plane at the bottom. The feed, patch and the ground plane are made of copper of standard thickness 0.035mm. The dielectric constant of the substrate is 4.3. Total area of the proposed antenna is 62.255 x 62.255. Equations The width of the patch is given by,
The length of the patch antenna is given by,
The effective dielectric constant is given by,
Where c = velocity of light
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