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Multi‐band CPW fed MIMO antenna for bluetooth, WLAN, and WiMAX applications
Author(s) -
Desde Irem,
Bozdag Goksenin,
Kustepeli Alp
Publication year - 2016
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.30001
Subject(s) - wimax , mimo , coplanar waveguide , monopole antenna , diversity gain , bluetooth , electronic engineering , electrical engineering , microwave , physics , antenna (radio) , engineering , optoelectronics , telecommunications , wireless , beamforming
In this letter, multi‐band coplanar waveguide (CPW) fed multiple‐input‐multiple‐output (MIMO) antenna is presented for Bluetooth, WLAN and WiMAX applications. The elements of MIMO antenna are identical CPW‐fed printed monopole antennas whose bandwidth performances are improved by employing inverse U and meander line slots. In the design of the antennas, a low‐cost FR4 substrate is used and the size of the element antennas are optimized as 35 mm x 30 mm. According to the measurements, S 11 is below −10 dB in 2.38 GHz – 2.52 GHz and 3.19 GHz – 6.44 GHz bands with 0.2 dB and 2.9 dB average peak realized gains, respectively. The element antennas are placed orthogonally and fed independently to obtain MIMO structure whose size is optimized as 42 mm x 62 mm. The performance of MIMO antenna is also examined in terms of diversity parameters such as envelope correlation coefficient and apparent diversity gain, which are lower than 0.02 and higher than 9.9 in the operating bands, respectively. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2182–2186, 2016