Novel Compact Microstrip Antennas With Two Different bands For 5G Applications

In this paper, millimeter-wave (MMW) antennas with two different designs have been proposed for fifth generation (5G) wireless applications. These novel antennas have a greater fractional bandwidth and an appropriate gain, making them suitable for a variety of applications such as fixed wireless services, broadcasting, land mobile, and many millimeter applications. Each antenna design has a different model and characteristics. The two designs resonate at different frequencies, 39.7 GHz and 43 GHz, which are suitable for 5G applications in many countries like Canada, the United States of America, Japan, and Australia. A commercial electromagnetic simulator (CST-Studio) was used to construct and optimize the proposed models. The proposed MMW models are designed on a compact Rogers Substrate RT-5880 with a thickness of h = 0.508 mm, a loss tangent $\delta$ value of 0.0009, and a dielectric constant $\left(\varepsilon_{r}\right)$of 2.2. The proposed antennas have a simple design structure to ensure reliability, mobility, and high efficiency, which can be used for many (5G) wireless applications. The proposed models provide a moderate gain of 6 dBi to 7 dBi. The impedance bandwidth of the proposed models ranges from 38.4 GHz to 41.1 GHz for the first model, which is equal to 2.7 GHz, and 41.6 GHz to 44.7 GHz for the second model, which is equal to 3.1 GHz. The efficiency of the models is about 73.8% and 78%, respectively, which is sufficient to meet the requirements of 5G wireless applications.