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A triple‐band highly miniaturized antenna for WiMAX/WLAN applications
Author(s) -
Ali Tanweer,
Biradar Rajashekhar C.
Publication year - 2018
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.30993
Subject(s) - miniaturization , wimax , bandwidth (computing) , optoelectronics , wi fi , electrical engineering , impedance matching , materials science , electronic engineering , physics , telecommunications , engineering , electrical impedance , wireless , wireless network
A novel highly miniaturized triple band antenna for WiMAX and WLAN applications is presented in this letter. The proposed design has an active patch area of only 108 mm 2 (9 × 12 mm 2 ), and operates at 2.5 (lower WiMAX), 3.47 (middle WiMAX) and 5.75 GHz (WLAN), respectively. Miniaturization in the proposed design is accomplished by etching 2 novel cascaded E‐type unit cell defected ground structure in conjunction with the F‐shaped slot, and multiband operations are achieved by etching U and H‐type slots in the radiating monopole. The miniaturization process leads to the reduction of about 82.4% and 73.5% in the active patch area and volume of the proposed antenna respectively, as compared with the conventional designed triple band antenna. The antenna has a compact volume of 0.15 λ 0 × 0.15 λ 0 × 0.01 λ 0 at a lower resonance of 2.6 GHz. The proposed structure has S 11 <–10 dB bandwidth of about 6.45% (2.55–2.72 GHz), 3.03% (3.25–3.35 GHz) and 5.9% (5.75–6.1 GHz) in simulation, and about 4.2% (2.51–2.62 GHz), 2.31% (3.42–3.50 GHz), and 4.81% (5.68–5.96 GHz) under measurement, respectively. Stable radiation characteristics and good impedance matching are observed across the operational bandwidth of the proposed design.