Open AccessTri‐band dual‐polarised omnidirectional antenna with high isolation for unmanned aerial vehicle applications
Author(s) -
Gong Qing,
Li Rong Lin,
Cui Yuehui
Publication year - 2018
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2018.5006
Subject(s) - omnidirectional antenna , isolation (microbiology) , directional antenna , antenna (radio) , dual (grammatical number) , computer science , multi band device , remote sensing , electrical engineering , engineering , telecommunications , geography , art , literature , microbiology and biotechnology , biology
A new tri‐band dual‐polarised omnidirectional antenna is proposed. The dual‐polarised antenna consists of a metal cuboid body with a vertical slot for horizontal polarisation (HP) and a rectangular back metal cavity with two folded horizontal slots for vertical polarisation (VP). A metal HP feedline is employed to coupling feed the vertical slot while a metal VP feedline is used to excite the two horizontal slots. Due to the coupling feed and the orthogonality between the vertical and horizontal slots, the dual‐polarised antenna features three bands and a high isolation. Experimental results show that the tri‐band dual‐polarised antenna covers the Chinese Unmanned Aircraft System bands (840.5–845, 1430–1444 and 2408–2440 MHz) with reflection coefficients <−10 dB and isolation >32 dB. Good omnidirectional radiation patterns are observed for both HP and VP.