International Journal on Recent and Innovation Trends in Computing and Communication ISSN: 2321-8169 Volume: 10 Issue: 2s DOI: https://doi.org/10.17762/ijritcc.v10i2s.5908 Article Received: 09 October 2022 Revised: 11 November 2022 Accepted: 24 December 2022 ___________________________________________________________________________________________________________________ 23 IJRITCC | December2022, Available @ http://www.ijritcc.org ASIM Shape Wide band High-Gain Patch Antenna Integrated with Frequency-Selective Surface as Super Strate for Sub-6GHz 5G Applications Shabnam Ara 1 , Dr. Prasanthi Kumari Nunna 2 1 Department of Electronics and communication,ShivalikCollegeofEngineering,DehradunINDIA, 2 DepartmentofElectricaland Electronics,UniversityofPetroleumandEnergyStudies, Dehradun,INDIA, 1 shabnam.ara3012@gmail.com, 2 prasanti@ddn.upes.ac.in Abstract This shows a wideband antenna with a FSS as a substrate. Initially, a Sim-Shape microstrip patch antenna is designed using an Fr4 substrate having 4.4 permittivity and a height of 1.6 mm with a dimension of 30 x 35 mm square at 4.5 GHz. The simulated result shows a wide band from 3.0 to 6.2 GHz. The bandwidth gain varied from 3.3 dB to 4.2 dB at these frequencies, and the result of a sim-shaped microstrip pattern phenna is improved after the integration of FSS as a substrate. A unit cell of the FSS periodic structure with a 6x7 array is designed using FR4 material. The simulated result shows a wide bandwidth ranging from 3.2 GHz to 6.8 GHz, with a gain improvement of 2.5 dB to 6.5 dB. Keywords: Antenna, FSS, Wave Frequency. I. INTRODUCTION It is expected that data traffic will grow by a factor of seven over the next five years. This is because more people are using cell phones, smart phones, broadband internet, fast networks, and many other mobile consumer trends. Mobile networks will be even more strained by video traffic, which consumes a lot of bandwidth and accounts for 78% of all mobile traffic [1–3]. Due to these problems, terahertz bands will be used in the future for 5G wireless transmission services. It will also be able to send data at up to 10 Gbps, have low latency (ms), a huge number of users (106 per km2), and move very quickly (500 km/h) [4-6]. The new 5G radio access networks should be able to support many connections at the same time and work across a wide range of frequencies [6]. A low-frequency spectrum (maximum 1 GHz), a moderate frequency band of 3.5 GHz (less than or equal to 6 GHz), as well as a high-frequency spectrum band (mm-wave), were defined by the FCC to enable 5G. While the flow frequency band effectively modifies the 5G and medium frequency bands, the mm-wave provides maximum data rates of more than 2 GB/s. The mm-wave frequency band allows for higher data speeds and a larger capacity, while the low band provides strong coverage, and the mid- band combines coverage and capacity. Therefore, the lower band of 5G is the best alternative for technology that is ready to be implemented in the first place. It is appropriate for use in both urban and rural locations due to the sub-6 GHz 5G bands' frequency range, which allows for the transmission of high data rates across long distances. As the 5G communication system has been warmly welcomed throughout the world, the demand for the antennas designed for 5G access points and smart phones is growing. Antenna design for 5G communication systems faces significant challenges given the range of the allocated frequency band. The antenna construction for 5G operation should be small enough to be internally integrated with smart devices [7]. Antennas are widely employed in sub-6 GHz frequency ranges because they have benefits such as compact size, reduced costs, and wider bandwidth [8]. However, a negative aspect of using this antenna/radiator is that when they are installed close to metallic things and electro-magnetic equipment, they suffer from a high mismatch of impedance. Another disadvantage is that at lower frequency regions in the microwave range, there is poor gain and weaker directivity. As a result, researchers are now interested in antennas and are always working to enhance their performance. One method to enhance its performance is frequency-selective surfaces (FSSs), described in [9] as metal surfaces that just show an electric response [10]. According to antenna and microwave engineering concepts, such surfaces are constructed from planar, regular arrangements of metal patches or strips in a variety of configurations. Different methods for determining optimal EM properties employ various element types and geometrical structure parameters, structural element dimension changes (patches or holes), a dielectric substrate,