DocumentCode :
1762305
Title :
A Compact Koch Fractal UWB MIMO Antenna With WLAN Band-Rejection
Author :
Tripathi, Shrivishal ; Mohan, Akhilesh ; Yadav, Sandeep
Author_Institution :
IIT Jodhpur, Jodhpur, India
Volume :
14
fYear :
2015
fDate :
2015
Firstpage :
1565
Lastpage :
1568
Abstract :
In this letter, a compact octagonal shaped fractal ultrawideband multiple-input-multiple-output antenna is presented, and its characteristics are investigated. In order to achieve the desired miniaturization and wideband phenomena, self-similar and space filling properties of Koch fractal geometry are used in the antenna design. These fractal monopoles are placed orthogonal to each other for good isolation. Moreover, grounded stubs are used in the geometry to provide further improvement in the isolation. The band rejection phenomenon in wireless local area network band is achieved by etching a C-shaped slot from the monopole of the antenna. The proposed antenna has compact dimensions of 45 mm × 45 mm and exhibits quasi-omnidirectional radiation pattern. In addition, it shows an impedance bandwidth (S11 <; -10 dB ) from 2 to 10.6 GHz with isolation better than 17 dB over the entire ultra-wideband range. Diversity performance is also evaluated in terms of envelope correlation coefficient and capacity loss. The measured results show good agreement with the simulated ones.
Keywords :
MIMO communication; antenna radiation patterns; monopole antennas; omnidirectional antennas; ultra wideband antennas; wireless LAN; C-shaped slot; Koch fractal geometry; WLAN band rejection; antenna design; compact Koch fractal UWB MIMO antenna; compact octagonal shaped fractal ultrawideband multiple-input-multiple-output antenna; fractal monopoles; monopole antenna; quasiomnidirectional radiation pattern; space filling properties; wireless local area network band; Fractals; MIMO; Ultra wideband antennas; Wireless LAN; Wireless communication; Band-rejection; Koch; fractal geometry; multiple-input–multiple-output (MIMO) antenna; ultra-wideband (UWB) antenna; wireless local area network (WLAN);
fLanguage :
English
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
Publisher :
ieee
ISSN :
1536-1225
Type :
jour
DOI :
10.1109/LAWP.2015.2412659
Filename :
7059214
Link To Document :
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