STM Journals Peer-reviewed research from Consortium e-Learning Network

Journal of Microwave Engineering and Technologies

Design and Analysis of Microstrip Band Stop Filter with Modified Circle and Dumbbell Shape Ground Structure

  1. Lalit Barpete
  2. Bimal Garg

Abstract

In this proposed paper the performance of Band stop filter with modified ground structure is analyzed in this specific work; the modified ground structure includes a circle and dumbbell etched shapes in ground plane. Parameters of  the  proposed configuration were calculated at the cut off  frequencies of f1=1 GHz, f2=1.62GHz and  also  proposed  designs  having  substrate height of 1.6 mm, loss tangent of 0.02 and dielectric constant of  4.4. Results are calculated using Computer Simulation Technology software (CST) also the response of the fabricated filter is tested on a spectrum analyzer (0 to 3GHz). The undesired sidebands and fluctuations of response are reduced by using modified ground structure.

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