FRACTAL KOCH MULTIBAND TEXTILE ANTENNA PERFORMANCE WITH BENDING, WET CONDITIONS AND ON THE HUMAN BODY | Zendy

M. E. Jalil | Zendy; M. K. A. Rahim | Zendy; N. A. Samsuri | Zendy; Noor Asniza Murad | Zendy; Huda A. Majid | Zendy; Kamilia Kamardin | Zendy; Muhamad Azfar Abdullah | Zendy

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FRACTAL KOCH MULTIBAND TEXTILE ANTENNA PERFORMANCE WITH BENDING, WET CONDITIONS AND ON THE HUMAN BODY

Author(s) -

M. E. Jalil,

M. K. A. Rahim,

N. A. Samsuri,

Noor Asniza Murad,

Huda A. Majid,

Kamilia Kamardin,

Muhamad Azfar Abdullah

Publication year - 2013

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 89

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier13041212

Subject(s) - fractal antenna , textile , fractal , antenna (radio) , koch snowflake , bending , acoustics , microstrip antenna , engineering , materials science , structural engineering , telecommunications , antenna efficiency , mathematics , physics , composite material , mathematical analysis

A multiband Fractal Koch dipole textile antenna is proposed for wearable applications. The antenna is designed to operate at 0.9GHz, 2.45GHz and 5.8GHz. Denim materials as the substrate are selected aiming to obtain robustness, ∞exibility and a lightweight textile antenna. The antenna model is designed, simulated, optimized and analyzed using Microwave Studio CST software. Two types of multiband antenna prototypes are fabricated and evaluated with difierent conducting elements (Shield It fabric and copper foil tape). Antenna performance is observed in terms of return loss, bandwidth, radiation pattern and realized gain. Three difierent comprehensive analyses are taken into consideration: measurement antenna with difierent bending sizes, on-body measurement and under wet conditions. The antenna performances are evaluated based on resonant frequency (fo) and bandwidth (BW). The antennas performance with bending on the human body (arm & forearm) is compared and investigated. A suitable placement on the body has been discovered between the chest and backside. The antennas have also been tested under wet conditions to ensure a stable characteristic under the in∞uence of water.

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