Open AccessHigh‐gain and low‐cost circularly polarized antenna array for 5G MMW applications
Author(s) -
Xiao Jun,
Li Hongmei,
Luo Delin,
Jin Hui,
Ding Tongyu,
Ye Qiubo
Publication year - 2022
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/mia2.12230
Subject(s) - axial ratio , materials science , printed circuit board , radiation , optics , extremely high frequency , turnstile antenna , optoelectronics , bandwidth (computing) , antenna gain , radiation pattern , coplanar waveguide , antenna array , high gain antenna , dipole antenna , array gain , stacking , antenna efficiency , antenna (radio) , circular polarization , physics , electrical engineering , telecommunications , engineering , microwave , microstrip , nuclear magnetic resonance
A high‐gain, low‐cost empty substrate integrated waveguide (ESIW)‐fed circularly polarized (CP) antenna array is demonstrated for millimetre‐wave 5G applications in this letter. The ESIW is formed by metallized FR4 printed circuit boards. By stacking the metallic aluminium z‐shaped radiating slots atop the ESIW feeding network, CP radiation is achieved. The proposed 1 × 8 antenna array offers a high measured gain of 17.8 dBic and high measured radiation efficiency of 89.1%. The measured impedance bandwidth for |S 11 | ≤ −10 dB and measured axial ratio (AR) bandwidth for AR ≤ 3 of the proposed 1 × 8 array are 11.4% (36.5–40.9 GHz) and 7.8% (37–40 GHz), respectively.