Open AccessCompact dual‐band antenna using inverted‐L loop and inner rectangular loop for WLAN applications
Author(s) -
Qu L.,
Zhang R.,
Kim H.H.,
Kim H.
Publication year - 2015
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.2015.2075
Subject(s) - loop antenna , loop (graph theory) , multi band device , impedance matching , bandwidth (computing) , electrical impedance , dual loop , capacitor , physics , materials science , antenna (radio) , optics , optoelectronics , radiation pattern , electrical engineering , telecommunications , antenna factor , engineering , voltage , mathematics , combinatorics
A small loop antenna for WLAN applications is proposed, which is comprised of an inverted‐L loop and an inner rectangular loop achieving dual‐band resonances within a compact size of 4.5 mm × 6.5 mm. A series capacitor in the feeding loop is employed for impedance matching of both bands and a shunt capacitor for high band, respectively. The proposed compact antenna is able to achieve −10 dB impedance bandwidth of 120 and 1260 MHz and average radiation efficiency of 69 and 61% in the 2.4 GHz band and the 5 GHz band, respectively.