11 Page 11-14 © MAT Journals 2019. All Rights Reserved Journal of Electronic Design Engineering Volume 5 Issue 2 Design of E-shaped Microstrip Patch antenna for S band Applications Mr.P.Sivakumar 1 , Ms.P.Arunadevi 2 , Ms.T.Revathi 2 , Mr.L.K.Balaji Vignesh 1 , Mr.C.Shanmugaraja 1 1 Assistant Professor, 2, UG Scholar, Department of E&T, AAA College of Engineering and Technology, Sivakasi, Tamil Nadu, India Email: arunapothi@gmail.com DOI: http://doi.org/10.5281/zenodo.3333579 Abstract Micro strip antennas are widely used in many applications due to their low profile, low cost and ease of fabrication which is required in various applications like mobile & satellite communication, Global positioning system and wireless application etc. In this paper, different E-shaped micro strip patch antennas are designed and the results are compared. The antenna design is an improvement from previous research and it is simulated using ADS (Advanced Design System) software. The design has been made on low cost material of FR4 substrate having dielectric constant of 4.2 with thickness of 1.6 mm. The proposed scheme is used by the probe feeding technique in order to operate under the frequency range of 3.45 GHz. The main objective of this paper is to design E-shaped microstrip antenna under various conditions by adjusting the dimensions of the antenna. After comparing different antenna’s parameter values, the better antenna will give good enhancement in the return loss, bandwidth, gain and directivity. Keywords: Microstrip patch antenna, Co-Axial probe feed, return loss, bandwidth, gain, directivity INTRODUCTION A Microstrip patch antenna is types of antennas that offers a low profile, i.e., thin and easily manufacture ability, which provides great advantage over traditional antennas [1]. An E-shaped patch antenna is easily formed by chop two slots from a rectangular shape. By chop a two slots from a patch, gain, directivity, bandwidth of Microstrip antenna can be improved [2]. And return loss of Microstrip patch can be reduced. The design adopts contemporary techniques; coaxial probe feeding, E-shape patch structure. The antenna operating the band of 2-4GHz [3]. Narrow bandwidth is the serious limitation of these Microstrip patch antenna. Different techniques are used to overcome this narrowband limitation. These techniques include changing the width of the E-shape patch antenna [4]. This paper, introduces design of E-shaped Microstrip patch antenna with slots for mobile communication. ANTENNA DESIGN & STRUCTURE In this paper, the E-shape Microstrip patch antenna has been designed with overall dimensions W(26.95mm) x L(20.66mm). The designing of E-shaped Microstrip patch antenna, the resonant frequency f r = 3.45 GHz and the dielectric substrate FR4 epoxy is used for fabrication [5]. The dielectric constant of the substrate ɛ r = 4.2 and thickness of the substrate h=1.6mm have been used to design the E- shaped Microstrip patch antenna. The width and length of the Microstrip patch antenna are determine as follows [6]. Calculation of width (W): Width of the Microstrip patch antenna is given by equation