Open AccessMetamaterial‐inspired dual‐band frequency‐reconfigurable antenna with pattern diversity
Author(s) -
Zhang Jiahao,
Yan Sen,
Vandenbosch Guy A.E.
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.2019.0329
Subject(s) - reconfigurable antenna , antenna (radio) , multi band device , metamaterial , wimax , metamaterial antenna , antenna diversity , computer science , diversity scheme , wireless , electronic engineering , frequency band , physics , omnidirectional antenna , telecommunications , electrical engineering , engineering , optoelectronics , coaxial antenna , orthogonal frequency division multiplexing , channel (broadcasting)
Multi‐functional antennas are very important in modern wireless communication systems. A novel dual‐band frequency‐reconfigurable antenna with pattern diversity is designed. The antenna consists of a composite right/left‐handed transmission line inspired structure, which works at the zeroth‐order mode (0) around 2.5 GHz and at the first‐order mode (1) around 3.5 GHz. The 0 mode results in an omni‐directional pattern and the 1 mode results in a broadside pattern. By adding varactors to continuously reconfigure the structure, the antenna is able to tune its lower resonant frequency from 2.36 to 2.60 GHz, which fully covers the 2.4–2.5 GHz ISM band, and tune its higher resonant frequency from 3.34 to 3.73 GHz, which fully covers the 3.4–3.7 GHz WiMAX band. Simulations and experiments match well, proving the validity of this new concept.