Open AccessPerformance enhancement of dual‐band antenna for internet of things applications using closed loops
Author(s) -
Kim M.,
Qu L.,
Shin H.,
Kim H.
Publication year - 2019
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.2019.2278
Subject(s) - ground plane , antenna (radio) , multi band device , coupling (piping) , coaxial antenna , physics , patch antenna , antenna factor , loop antenna , computer science , electronic engineering , antenna measurement , microstrip antenna , acoustics , telecommunications , engineering , mechanical engineering
In this Letter, a dual‐band antenna with improved performance is proposed by generating a stronger coupling with the ground plane using two closed loops. The antenna is designed in such a way that it is coupled with two orthogonal ground modes in the lower and higher bands. Two closed loops are attached at the end of the ground plane to control the frequencies of the two ground characteristic modes. Through simulation and experimental verification, the proposed antenna has obtained greatly improved performance in both bands compared to the reference antenna without closed loops.