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Mimo antenna with high frequency selectivity and controllable bandwidth for band‐notched UWB applications
Author(s) -
Huang HuiFen,
Xiao ShuGuang
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.29929
Subject(s) - stub (electronics) , mimo , bandwidth (computing) , wideband , microwave , electronic engineering , ultra wideband , electrical engineering , monopole antenna , optoelectronics , physics , engineering , antenna (radio) , telecommunications , beamforming
A multiple‐input–multiple‐output (MIMO) antenna with high frequency selectivity and controllable bandwidth, is proposed for band‐notched ultrawideband (UWB) applications. In other words, it has a bandstop‐filter‐like response (second‐order notched band) at the aimed rejected band. It consists of two rectangular printed monopole (PM) elements and a simple stepped ground stub to enhance wideband isolation. For achieving the second‐order rejected band of the IEEE 802.11 wireless local area network (WLAN) band from 5.15 to 5.85 GHz centered at 5.5 GHz, two parasitic modified split‐ring resonators (PMSRRs) and two inverted L‐shaped branches (ILBs), are utilized. Measured results prove a bandwidth of S 11 < −10 dB and S 12 < −15 dB at 2.8–12 GHz excluding a rejection band of 5–5.95 GHz. Its size is only 32 × 26 mm 2 on a cost‐effective FR4 substrate. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1886–1891, 2016