Design of Biodegradable Quadruple-shaped DRA for WLAN/Wi-Max applications

Pramod Kumar, Santanu Dwari, Utkarsh Kumar, Jitendra Kumar


A novel Quadruple-shaped Dielectric Resonator Antenna (DRA) excited by a coaxial feed is investigated. The dielectric used for investigation is biodegradable polymer based ceramic material having a dielectric constant () of 4.5 and dielectric loss tangent (δ) =0.002. The resulting antenna offers broad impedance bandwidth of 63.2% for |S11| < -10 dB from 2.8 to 5.2 GHz frequency band. This antenna is suitable for practical use in WLAN (5.15–5.35, 5.725–5.850 GHz) and Wi-Max (3.4–3.69 GHz) applications. The results show the peak gain of the antenna is 4.5dBi at resonant frequency 3.8 GHz. It is also observed that the new proposed structure of Quadruple-shaped DRA offers broadside radiation patterns and high efficiency for the entire operating band. The simulated and experimental results are well in agreement.


Biodegradable Polymer, Dielectric Resonator Antenna, Quadruple-shaped DRA, WLAN, Wi-Max

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