
Low‐profile omnidirectional dual‐polarised antenna for 2.4 GHz WLAN applications
Author(s) -
Liu Ying,
Xue Jin,
Wang Hui,
Gong Shuxi
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.2014.1146
Subject(s) - omnidirectional antenna , monopole antenna , antenna (radio) , optics , dipole antenna , multi band device , physics , coaxial antenna , radiation pattern , wi fi , materials science , electrical engineering , telecommunications , wireless , engineering , wireless network
A low‐profile omnidirectional dual‐polarised antenna for 2.4 GHz wireless local area network (WLAN) applications is proposed. The vertically/horizontally dual‐polarised radiation patterns are achieved by combining a modified monopole antenna with a printed arc dipole array. The overall volume of the presented antenna is less than 0.63 λ 0 × 0.63 λ 0 × 0.057 λ 0 ( λ 0 is the free‐space wavelength at central frequency). To verify the design, a prototype antenna is fabricated and tested. The measured results show that the −10 dB impedance bandwidths for vertical polarisation (VP) and horizontal polarisation (HP) have both covered the required band of 2.4–2.48 GHz and the isolation, in the operating band, is more than 24 dB. The measured cross‐polarisation levels within the working plane for VP and HP are lower than −18 dB. Stable antenna gains are greater than 0.46 and 0.44 dBi for VP and HP over the operating frequency band, respectively.