Open AccessCoplanar waveguide‐fed Koch‐like sided Sierpinski hexagonal carpet multifractal monopole antenna
Author(s) -
Li Daotie,
Mao JunFa
Publication year - 2014
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2013.0041
Subject(s) - sierpinski triangle , wimax , ground plane , fractal antenna , monopole antenna , physics , directivity , dipole antenna , coplanar waveguide , omnidirectional antenna , optics , fractal , antenna (radio) , wireless , telecommunications , antenna efficiency , computer science , mathematics , mathematical analysis , microwave
A Koch‐like sided Sierpinski hexagonal carpet multifractal monopole antenna fed by coplanar waveguide with a Koch‐like edged fractal ground is designed, fabricated and measured, which covers WLAN, WPAN, WiFi and WiMAX bands simultaneously. The multifractal monopole has ideal dipole‐like gain patterns, which are omnidirectional in the H ‐plane ( Phi = 0°, XOZ) and doughnut‐shaped in the E ‐plane ( Phi = 90°, YOZ) with considerable gain (2.0–5.11 dBi) and high efficiency (90–97%), of which f 1 = 2.5 GHz (| S 11 | = − 11.6 dB, WLAN + WiMAX), f 2 = 3.5 GHz (| S 11 | = − 15.5 dB, WiMAX), f 3 = 5.5 GHz (| S 11 | = − 15.5 dB; WLAN + WiMAX) are generally useful. The multifractal monopole is superior compared to other designs in bandwidth, directivity, efficiency, polarisation and dimension. It is a very attractive candidate for applications mentioned above and other fixed or mobile wireless multiband communication systems.