Abstract
In this paper, a flexible, planar, and low profile ultra-wideband multi element textile antenna is presented. The antenna comprises four tree-shaped elemental structures. A defected ground plane and four defected feed lines are utilized to achieve higher port isolation with band notch characteristics. The proposed antenna uses an integrated slotted ring type stub with rectangular line extended over two sides. It is connected to the two sides of the partial ground. The antenna band width is from 3.18 to 4.60 GHz and 8.89 to 12 GHz with notch characteristics over full WLAN (2.4–2.485 GHz, 5.15–5.85 GHz), C-band uplink (5.925–6.425 GHz), GEOSAT LNB (7.25–7.75 GHz), and ITU (7.75–8.5 GHz) application bands. Moreover, a healthier isolation of about 20.5 dB is realized concerning between any two ports. A prototype of the suggested antenna is fruitfully fabricated and required measurement is done. Several diversity parameters, radiation characteristics, antenna gain etc. are investigated. Both the simulated and experimental outcomes direct the proposed antenna as a good MIMO contender. From the investigated notch properties it is found the antenna can be realistic in UWB wireless application to prevent the interference from the specified notch frequency band.
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