Open AccessUnidirectional planar monopole ultra‐wideband antenna using wrench‐shaped feeding structure
Author(s) -
Ellis M.S.,
Zhao Zhiqin,
Wu Jiangniu,
Nie Z.,
Liu QingHuo
Publication year - 2014
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.2014.0298
Subject(s) - monopole antenna , radiation pattern , planar , dipole antenna , ground plane , helical antenna , acoustics , random wire antenna , magnetic monopole , optics , antenna efficiency , physics , antenna (radio) , j pole antenna , electrical length , wideband , electrical engineering , engineering , computer science , computer graphics (images) , quantum mechanics
A unidirectional planar monopole ultra‐wideband (UWB) antenna is presented. To realise unidirectional radiation, a new feed structure is implemented without modifications in the ground plane or the monopole. By using a wrench‐shaped feeding structure, unidirectional radiation of the planar monopole antenna can be realised, especially at high frequencies. The antenna is built on a 20 × 30 mm FR4 substrate to cover a frequency bandwidth from 3.1 to over 14 GHz for a voltage standing wave ratio ≤2.