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Dual‐band, low‐profile, vertically polarized annular ring slot antenna embedded in a small metallic UAV
Author(s) -
Sun Ling,
Sun Baohua,
Yuan Jiangpeng,
Tang Wending
Publication year - 2016
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.29554
Subject(s) - monopole antenna , antenna (radio) , coaxial antenna , radiation pattern , ground plane , patch antenna , radius , antenna measurement , optics , antenna factor , antenna efficiency , physics , electrical engineering , engineering , computer science , computer security
A dual‐band, low‐profile, vertically‐polarized annular ring slot antenna is presented. The antenna consists of an annular ring slot structure and a ring‐shaped structure. The ring‐shaped structure is attached on the back of the annular ring slot structure using two sets of conductive vias to avoid increasing the size of the proposed antenna. Dual‐band characteristic is realized by adjusting the radius of the annular ring slot structure and the ring‐shaped structure. Analysis of the dual‐band characteristic of the proposed antenna is discussed. The proposed antenna is vertically polarized and provides a monopole‐like radiation pattern on both the frequency bands. The ground size of the proposed antenna is the same size as the antenna radius. The ground plane is relatively small comparing with most of the other vertically polarized patch antennas. The edge of the proposed antenna is shorted by a set of conductive vias. The proposed antenna is insensitive to the surrounding environment and thus can be embedded in a metallic unmanned aerial vehicles (UAV). A prototype with a height of 3.048 mm (0.03λ) and radius of 55 mm (0.45λ) is designed, fabricated, and measured. The proposed antenna works at 2.38 and 2.58 GHz. In addition, the proposed antenna embedded in a metallic UAV is simulated. The results show that the metallic UAV has small effect on the performance of the antenna. The proposed antenna is suitable for the operations of being controlled by a ground control station (GCS) and transmitting data to the GCS simultaneously for a small UAV. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:323–328, 2016