Open AccessBroadband omnidirectional distributed antenna for indoor wireless communication systems
Author(s) -
He Kai,
Gong ShuXi,
Guo Da
Publication year - 2016
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.2016.0832
Subject(s) - omnidirectional antenna , ranging , acoustics , broadband , radiation pattern , ground plane , helical antenna , bandwidth (computing) , antenna (radio) , optics , coaxial antenna , physics , electrical engineering , telecommunications , computer science , engineering
A broadband omnidirectional distributed antenna is studied theoretically and experimentally. By loading three shorted coupling patches over the top of the radiation patches and a circular sleeve on the ground plane, the bandwidth of the antenna which is excited by a truncated cone feeding structure is significantly enhanced. Results show that an impedance bandwidth of 152% ranging from 0.97 to 7.09 GHz is achieved. Omnidirectional radiation patterns in the horizontal plane, low cross polarisation level, and stable antenna gain ranging from 2.1 to 7.3 dBi are realised over the operating band, which suggests the distributed antenna can be widely used in indoor wireless communication systems.