A Wideband Circularly Polarized Magnetoelectric Dipole Antenna for 5G Millimeter-Wave Communications

Sensors

Sang Min Lee¹  Nam Kim²  Md. Abu Sufian²  Hussain Askari²  Niamat Hussain³ 

[1] Department of Corporate Support Centre, Korea National University of Transportation, Chungju-si 27469, Korea;Department of Information and Communication, Chungbuk National University, Cheongju 28644, Korea;Department of Smart Device Engineering, Sejong University, Seoul 05006, Korea;

关键词: magnetoelectric;    dipole;    circularly polarized;    5G antenna;    28 GHz;   

DOI  :  10.3390/s22062338

来源: DOAJ

【 摘 要 】

In this paper, a wideband circularly polarized (CP) magnetoelectric (ME) dipole antenna operating at 28 GHz band was proposed for 5G millimeter-wave (mm-wave) communications. The antenna geometry included two metallic plates with extended hook-shaped strips at its principal diagonal position, and two corners of truncated metallic plates at the secondary diagonal position. The pair of metallic vias connected the modified strips to the ground plane to create the magnetic dipole. The L-shaped probe feed between the strips was used to excite the antenna. The antenna showed stable gain and wideband characteristics. The simulated and measured results showed that the proposed CP ME dipole antenna had an overlapping (|S₁₁|< −10 dB impedance and 3 dB axial ratio) bandwidth of 18.1% (25–30 GHz), covering the frequency bands dedicated for 5G new radio communications. Moreover, an average gain of 8 dBic was achieved by the antenna throughout the operating bandwidth. The measured data verified the design concept, and the proposed antenna had a small footprint of 0.83 λ_o × 0.83 λ_o × 0.125 λ_o (λ_o is free space wavelength at the lowest operating frequency), suitable for its application in 5G smart devices and sensors.

【 授权许可】

Unknown