IJBTT

Study of Various EBG Based Micro strip Filter Structures

	International Journal of Engineering Trends and Technology (IJETT)
	© 2013 by IJETT Journal
	Volume-4 Issue-5
	Year of Publication : 2013
	Authors : Anchal Chugh , Dr.Rajesh Khanna

Citation 

Anchal Chugh , Dr.Rajesh Khanna. "Study of Various EBG Based Micro strip Filter Structures". International Journal of Engineering Trends and Technology (IJETT). V4(5):1801-1803 May 2013. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group.

Abstract

In this paper, a planar EBG based microstrip filter structure is formed by etching circles in the ground plane and using a modulated microstrip line. These planar EBG microstrip structure provide s a wide stopband with high att enuation with high ripples in the passband due periodicity of EBG structure . Windows are used to eliminate the ripples in the passband caused by the periodicity. The coefficients of window distribution function are used for determining the radius of the circles etched in the ground plane. In this paper, a comparison of planar EBG microstrip filter structure using fixed window distribution is done. A comparison of effect of different window distribution on passband and stopband performance is presented. It is found that the Riesz distribution gives the largest bandwidth of 7.18GHz with maximum stopband attenuation of 50dB but with large ripple s in the passband while the Poisson distribution gives small ripples in both the lower and upper passband but with smallest bandwidth of 4.77GHz and stopband at tenuation of 27.68dB .

References

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Keywords
Electromagnetic Bandgap Structure, CST Microwave Studio, Modulated Microstrip Line, Photonic Bandgap Structure, Tapering Function