Journal of electromagnetic engineering and science

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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A Simple Model for a DGS Microstrip Line with Stepped Impedance Slot-Lines

  • Woo, Duk-Jae (Department of Electrical Engineering and Computer Science, Seoul National University) ;
  • Lee, Taek-Kyung (School of Electronics, Telecommunication, and Computer Engineering, Korea Aerospace University) ;
  • Nam, Sangwook (Department of Electrical Engineering and Computer Science, Seoul National University)
  • Received : 2014.11.07
  • Accepted : 2015.01.02
  • Published : 2015.01.30
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Abstract

In this paper, a simple equivalent circuit model for a defected ground structure (DGS) microstrip line with stepped impedance slot-lines in the ground plane is presented. In addition, an analytic expression for the resonance frequency of the proposed structure is derived. In equivalent circuit modeling, the capacitance and the inductance of the resonance circuit are evaluated from the dimensions of the etched pattern in the ground plane. The resonance frequencies calculated from the proposed method are compared with those obtained with an electromagnetic (EM) simulation.

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References

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