Premium
Bandwidth enhancement metamaterial antenna based on transmission line approach
Author(s) -
Bala B. D.,
Rahim M. K. A.,
Murad N. A.
Publication year - 2015
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.28821
Subject(s) - metamaterial antenna , antenna efficiency , bandwidth (computing) , return loss , optics , antenna factor , antenna measurement , metamaterial , patch antenna , radiation pattern , microwave , transmission line , dipole antenna , microstrip antenna , coaxial antenna , physics , electronic engineering , antenna (radio) , electrical engineering , engineering , telecommunications
A composite right‐/left‐handed transmission line metamaterial antenna with enhanced bandwidth and efficiency is proposed. The antenna combines zeroth‐order resonant (ZOR) and positive‐order resonant (POR) modes for the bandwidth enhancement. An asymmetrical coplanar waveguide technique is used to feed the antenna and also to achieve certain degree of compactness. The overall size of the antenna is 0.32λ 0 × 0.38λ 0 × 0.012λ 0 (40 × 48 × 1.52 mm) at 2.4 GHz. Simulation results show that a bandwidth enhancement of 41% is obtained with the radiation efficiencies of 95 and 97% for the ZOR and POR modes, respectively. The measured impedance bandwidth shows that the antenna has potential applications for WLAN (2.39–2.45 GHz) and WiMAX (2.5–2.69 GHz) operations. The simulated and measured antenna performances in terms of return loss and the radiation patterns are presented and compared. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:252–256, 2015