Open AccessDevelopment of polarisation reconfigurable omnidirectional antennas using crossed dipoles
Author(s) -
Fan Yi,
Li RongLin,
Cui Yuehui
Publication year - 2019
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2018.5490
Subject(s) - omnidirectional antenna , optics , dipole antenna , antenna (radio) , physics , reconfigurable antenna , dipole , directional antenna , coaxial antenna , computer science , telecommunications , quantum mechanics
A new method for the development of polarisation reconfigurable omnidirectional antennas is presented. Four crossed‐dipole elements around a cylinder are used to construct an omnidirectional antenna. By switching on/off four PIN diodes for each crossed‐dipole element, three types of polarisation reconfigurable omnidirectional antennas are realised, including vertical or horizontal polarisation (VP/HP), ±45° slant polarisation (SP), and left‐handed circular polarisation or right‐handed circular polarisation (LHCP/RHCP). The VP/HP, ±45° SP, and LHCP/RHCP reconfigurable omnidirectional antennas are simulated, fabricated, and measured, respectively. Simulated and measured results show that all the three reconfigurable omnidirectional antennas feature good omnidirectional patterns with gain variations of <2 dB in the horizontal plane.