Design of mmWave Directional Antenna for Enhanced 5G Broadcasting Coverage

Sensors

Weiting Zhao¹  Shuli Zheng¹  Rongke Liu¹  Tao Hong² 

[1] School of Electronics and Information Engineering, Beihang University, Beijing 100000, China;Yunnan Innovation Institute·BUAA, Kunming 650000, China;

关键词: 5G broadcasting;    mmWave;    tunnel;    SIW horn antenna;    MOGA;   

DOI  :  10.3390/s21030746

来源: DOAJ

【 摘 要 】

5G mmWave broadcasting is considered to be the main method of future broadcasting. However, the mmWave transmission has a large space loss, especially in tunnels. In order to compensate for the attenuation of the broadcast signal, a directional horn antenna is designed in this paper. Substrate integrated waveguide (SIW) technology, dual-element arrays and extension structures are used to improve the antenna structure and achieve good directional characteristics. The multi-objective genetic algorithm (MOGA) is used to optimize the antenna parameters and improve optimization efficiency. Ultimately, the whole antenna was 28.2 mm in length and 28.6 mm in width, and the FR4 material, with a relative permittivity of 4.4, was used as a dielectric plate. The maximum gain of the antenna is 8.06 dB, and the bandwidth with gain greater than 6.5 dB is nearly 2 GHz. Antenna performance simulation and test results show that the extended semicircular structure is beneficial in enhancing the directional radiation of the antenna. This provides a reference method for directional antennas applied to 5G millimeter wave bands to increase gain and narrow beams.

【 授权许可】

Unknown