Open AccessSlim planar composite antenna with two orthogonal polarisations for WLAN router applications
Author(s) -
Sun Li,
Zhang Guanxi,
Sun Baohua
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2015.1601
Subject(s) - dipole antenna , coaxial antenna , planar , monopole antenna , antenna (radio) , stub (electronics) , radiation pattern , physics , return loss , optics , electrical engineering , acoustics , materials science , computer science , engineering , computer graphics (images)
A slim planar composite antenna for WLAN router applications is presented. A J‐antenna and a dipole antenna are proposed as components antennas for the vertical and the horizontal polarisations, respectively. The arms of the dipole adopt a bent structure for size miniaturisation. For tuning the impedance matching, a matching stub is introduced working as a parallel inductor on the upper part of the dipole. The antenna is made by copper and fed by coaxial lines. The final antenna achieves two orthogonal polarisations with a low cross‐polarisation level <−18 dB, a return loss better than 10 dB, and port isolation in excess of 19.3 dB from 2.38 to 2.51 GHz, thus making it suitable for use in 2.45 GHz WLAN router polarisation diversity applications. The slim planar structure with 25.5 mm width and light weight makes it easy to install on WLAN routers.