Abstract
Abstract The use of high permittivity materials on substrates of a microstrip antenna was developed with Bismuth Niobate ceramic doped with vanadium Oxide (BiNbO4 (V2O5)) and compared with an antenna of silicon dioxide substrate (SiO2) using Ansys software HFSS and CST Studio. The ceramic antenna has -20 dB at 3.5 GHz and the silicon dioxide antenna -24.7 dB of reflection coefficient. The bandwidth values are 80 MHz for the bismuth ceramic antenna and 100 MHz for the silica antenna. The results demonstrate that the proposed BiNbO4 antenna has great advantage compared to those mentioned in terms of volume reduction, presenting results similar to those antennas with higher volume. In addition, we use copper periodic structures (EBG) in order to increase the gain in associated with the use of BiNbO4 with addition of V2O5 on the antenna substrate leading to a reduction in the total volume. Therefore, the proposed Bismuth Niobate antenna proves to be an excellent alternative for 5G technology and microwave S band (2-4 GHz) devices, highlighting the mentioned advantages.
Highlights
The Fifth Generation of Mobile Communication System(5G) emerged due to the need of solving the problems of High data rate, low latency and the explosive growth in mobile data traffic[1,2]
The use of electroceramic materials in antennas appears as a viable option for presenting high dielectric constants and loss reduction in addition of low magnetic impurities, which leads to a small level of non-linearities in the material[3]
Two antennas with Electromagnetic Band Gap (EBG) structures were designed and compared using the software Ansys HFSS and CST Studio to operate at S band (3.5 GHz) 5G technology
Summary
The Fifth Generation of Mobile Communication System(5G) emerged due to the need of solving the problems of High data rate, low latency and the explosive growth in mobile data traffic[1,2]. Ceramic materials with εr > 20 are commonly used in miniaturization of antennas, enabling the insertion of these elements in portable devices[4,5] To characterize these materials and their possible applications in mobile communication devices, for example, some properties that describe dielectric materials are important such as: the quality factor (Q), the dielectric constant ( εr ) and the temperature coefficient at the resonance frequency ( τ f )[3]. Zhou et al.[9] developed a two elements microstrip antenna with BiNbO4(V2O5) substrate to operate in 3.5 GHz obtaining 50 MHz of bandwidth. As microstrip antennas generally have low bandwidth and insufficient gain for such applications, Materials Research periodic structures have been widely used in conjunction with εr > 20 substrates[13,14].
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