No abstract

Nowadays, microstrip antennas are widely used in wireless applications. We have so many bands of frequency and we can list out L, S, X, Ka etc. For this work, we will be focusing on X bands only. The range of frequency of X bands is from 8 to 12 GHz. Design and simulate a compact microstrip patch antenna for X band applications are our main goals for this topic so that we will find out good results of antenna. The software used in this paper is HFSS 15 (High Frequency Structure Simulator 15). The proposed antenna is a rectangular microstrip patch with the dimensions of 6mm x 5mm using as substrate material FR4, dielectric constant 4.4 and operating frequency 11 GHz. After simulation, we got a gain equal to 2.8 dB, bandwidth equals to 700 MHz, directivity equals to 3.96 dB, VSWR (Voltage Standing Wave Ratio) equals to 1.24. These results show that antenna is very suitable for X bands applications (satellite communication, wireless computer networks, etc.)

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5G stands for 5 th generation network. It allows to connect people, machines, objects, etc. this paper will be talking about the design of a simple rectangular microstrip patch antenna for Ka bands and mmW applications at 35 GHz as operating frequency with dimensions 4.4 x 3.05 mm2 and we got after simulation some parameters such as bandwidth equals to 4 GHz, 5.3 dB as Gain, 6.5 dB as Directivity, 1.9 as VSWR (Voltage Standing Wave Ratio). Then, we have tried to improve those parameters by doing another design known as U slot antenna and we have achieved, bandwidth equals to 3 GHz, 6.08 dB as Gain, 7.16 dB as Directivity, 1.3 as VSWR. The proposed antenna has been made using FR4 material for substrate and has successfully improved the values of parameters because efficiency is 85% and is suitable for 5G applications.