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Design of a miniaturized planar half elliptical ultra‐wideband dipole using a concaved arm
Author(s) -
Guo Lu,
Min Ming,
Feng Wenjie,
Che Wenquan,
Yang Wanchen
Publication year - 2019
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.21884
Subject(s) - miniaturization , return loss , planar , bandwidth (computing) , dipole antenna , dipole , optics , radiation pattern , omnidirectional antenna , physics , electrical engineering , computer science , antenna (radio) , engineering , telecommunications , computer graphics (images) , quantum mechanics
This article presents the miniaturization of a planar half elliptical ultra‐wideband dipole. By simply placing a concaved arm in close proximity to the original structure, a 45% area reduction in terms of electrical wavelength can be achieved. The proposed antenna exhibits a wide measured return loss bandwidth of 2 to 9.9 GHz and omnidirectional radiation patterns across the band. The design features a footprint size of 41.5 × 41.5 mm 2 and an electrical size of 0.28 λ × 0.28 λ at 2 GHz. Compared with some previously reported planar designs, the proposed antenna presents a more compact electrical dimension and better or comparable bandwidth. Critical geometric parameters of the structure, particularly the concaved arm, are investigated to understand the miniaturization and operating mechanism of the design. Satisfactory correlation between the simulation and measurement data is obtained.