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Reflection Phase Characteristics of EBG Structures and WLAN Band Notched Circular Monopole Antenna Design

Naveen Jaglan(1*), Samir Dev Gupta(2)

(1) Department of Electronics& Communication Engineering, Jaypee Institute of Information technology, India
(2) Department of Electronics& Communication Engineering, Jaypee Institute of Information technology, India
(*) Corresponding author



Circular monopole antenna for Ultra wide band (UWB) applications with band notch property is proposed. The proposed antenna rejects wireless local area network WLAN band (5-6 GHz). In this paper reflection phase property of EBG structures is proved using mathematical analysis. Furthermore reflection phase and dispersion diagram both estimate same band gap in EBG structures.Antenna utilises modified mushroom-type Electromagnetic Band Gap (EBG) structures to achieve band-notched design. The advantages of band notched designs using EBG structures like notch-frequency tuning, antenna design independent approach and stable radiation pattern are also shown. About 7 % reduction in size of EBG patch is obtained if conventional mushroom type EBG is replaced by proposed I-slot type EBG. Fabricated and measured results are in good agreement with simulated ones.
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Dispersion Diagram; Electromagnetic Band Gap (EBG); Notch Band; Reflection Phase; Ultra Wide Band (UWB) Antenna

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