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A dual‐polarized cross‐dipole antenna with wide beam and high isolation for base station
Author(s) -
Hao JiaWen,
Wei Feng,
Zhao XiBei,
Shi Xiao Wei
Publication year - 2020
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22373
Subject(s) - beamwidth , optics , physics , dipole antenna , microstrip antenna , fan beam antenna , microstrip , antenna (radio) , coaxial antenna , electrical engineering , engineering
Abstract In this paper, a dual‐polarized cross‐dipole antenna with wide beam and high isolation is designed and analyzed for base station. The proposed antenna consists of two planar cross dipoles with four square patches, two L‐shaped microstrip lines, two ground plates, four parasitic patches, and a reflector. The square patches are placed between the center of cross dipoles to couple with L‐shaped microstrip lines. By introducing the parasitic patches, the wide beam can be realized. The measured results show that the proposed antenna achieves an impedance bandwidth (| S 11 | < −10 dB) of about 18.7% (1.9‐2.35 GHz) and an isolation better than 30 dB. A measured gain of 5.7 dBi and a half‐power beamwidth over 120° at the center frequency are obtained. Furthermore, the size of the proposed antenna is only 0.5 λ 0 × 0.5 λ 0 × 0.22 λ 0 ( λ 0 is wavelength at the center frequency).