1 muhammadasimkhan56@gmail.com Abstract— In this study four elements conformal microstrip array antenna integrated into glass woven fabric was successfully designed. This type of antenna will be used in iBURST base station controls instead of adaptive array antenna (AAA) elements with signal processing in order to maintain the energy radiated and received by base station. Simulation of antenna was done by using HFSS software for the determination of antenna size, return loss, VSWR, radiation pattern, gain, directivity etc. The simulated return loss for the resonant frequency of 1.79 GHz was -16.36 dBs. This type of array antenna is very valuable in the Telecommunication. Index Terms— (a) Return loss (b) Radiation pattern. I. INTRODUCTION HE integration of the antenna and textile materials are very important in every field of telecommunication. Since the concept of smart textile systems was introduced in 1990s, research on electro-textile has rapidly expanded [1-8]. Nowadays, more and more attention has been given to the healthcare and protective clothing sectors [1-7]. In these circumstances, the antenna, as an electronic element, plays an important role in wireless data transmission. In order not to lose the flexibility and comfort of garments, antennas should be fully integrated into the textile materials.For any wireless communication devices, an antenna system is necessary for receiving and sending signals. Microstrip antennas, proposed firstly in early 1953, have several advantages compared to conventional microwave antennas. They have low volume, low profile planar configurations and low fabrication cost. Moreover, they are conformable with the aircraft surface and This paper contain the research about array antenna integration into glass woven fabric. The paper was completed in 20 June 2015. “ This work was self-funded by group members”. Muhammad Asim 1 khan is the student of BS Telecommunication final semester in the department of Information Technology, Hazara University, Mansehra, Khyber Pukhtun Khwa, Pakistan. (e-mail:muhammadasimkhan56@gmail.com) This project is done under the supervision of Engineer Basir A Usman, Lecturer in the department of Information technology, Hazra University Mansehra, Khyber pukhtun Khwa, Pakistan. (e-mail: usman.basir@gmail.com) do not perturb the aerodynamics of host aerospace vehicles. Desired antenna characteristics often may be obtained with a single microstrip element. However, in real applications, high gain, low side-lobe level, beam scanning or steering capability is possible only when discrete radiators are combined to form arrays [5]. In past “ Department of Textile Materials Science and Product Design, College of Textiles, Donghua University, Shanghai 201620, China” had designed single element and two element conformal microstrip antenna integrated into three dimensional orthogonal woven composite [9-10] .However, in most cases, microstrip array antennas are usually applied to obtain better properties than the single- element antenna. They had designed two element array antenna for better result and they succeeded but the return loss was not resonate on the desired frequency of 1.5 GHz [9-10]. Therefore in this study four element array antenna was designed. It is aimed to work for iBURST 1.79 GHz. One single-element and two element patch antennas was also designed and fabricated using the same processing method with the four-element array antenna. The antenna performance were measured and analyzed. II. DESIGN PROCEDURE The antenna consist of ground plane, substrate, arrays and feeds. Copper sheet is used as ground plane having 0.035 mm thickness and length of 144 mm and having width 490 mm. The three dimension orthogonal glass woven fabric is used as substrate with same length and width as the ground plane, with dielectric constant of 4.5 and tangent loss 0.01. The thickness of substrate is 2.4 mm. The impedance network for the array antenna is relative simple that includes four quarter-wave transformer and one divide-by-four operation to reach the desired 50 ohm input impedance [11]. The patch size of the woven antenna was calculated according to Eq. (2) and Eq. (3). The width of the patch was calculated from Design four element Microstrip Array Antenna integrated into glass woven fabric in HFSS for iBurst Muhammad Asim 1 Khan, Muhammad Arif 2 , Muhammad Asim 3 , Mukhtar 4 Ahmad,Engineer Basir A Usman, Engineer Mohsin B shah, Department of Information technology, Hazara University Mansehra, Pakistan. T