Design of the DGS cell for the improvement of the characteristics of a return loss at passband and an attenuation at stopband 


Vol. 28,  No. 3, pp. 171-178, Mar.  2003


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  Abstract

In this paper, We has proposed two DGS(Defected Ground Structure) resonators and designed the low-pass filter using the proposed DGS types. This structure consists of two rectangular slots, a ‘II type’ slot on the ground plane, and the stub at the transmission line. It has strong advantages that can vary the return loss at the passband freely and also can easily tune the attenuation pole frequency at the stopband. For enhancing the poor skirt property at the cutoff frequency of the Single Stub ‘II Type’ DGS cell, we have obtained the steep slope attenuation characteristic by combining the rectangular slot on both sides of the DGS.
This type of the LPF with the proposed structure can be made more smaller than the existing filters and be used to find the various applications for eliminating the hamonics and spurious mode at WLL and the 2.4 GHz ISM band systems.

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  Cite this article

[IEEE Style]

Y. Cho and K. Jun, "Design of the DGS cell for the improvement of the characteristics of a return loss at passband and an attenuation at stopband," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 3, pp. 171-178, 2003. DOI: .

[ACM Style]

Young-Bin Cho and Kye-Suk Jun. 2003. Design of the DGS cell for the improvement of the characteristics of a return loss at passband and an attenuation at stopband. The Journal of Korean Institute of Communications and Information Sciences, 28, 3, (2003), 171-178. DOI: .

[KICS Style]

Young-Bin Cho and Kye-Suk Jun, "Design of the DGS cell for the improvement of the characteristics of a return loss at passband and an attenuation at stopband," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 3, pp. 171-178, 3. 2003.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880