Study of Various EBG Based Micro strip Filter Structures
Journal Title: INTERNATIONAL JOURNAL OF ENGINEERING TRENDS AND TECHNOLOGY - Year 2013, Vol 4, Issue 5
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 provides a wide stopband with high attenuation 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 ripples 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 attenuation of 27.68dB.
Authors and Affiliations
Anchal Chugh1 , Dr. Rajesh Khanna
Keywords
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