Active and Passive Electronic Components (Jan 2004)

Novel Two-Dimensional (2-D) Defected Ground Array for Planar Circuits

  • Haiwen Liu,
  • Xiaowei Sun,
  • Zhengfan Li

DOI
https://doi.org/10.1080/08827510310001616876
Journal volume & issue
Vol. 27, no. 3
pp. 161 – 167

Abstract

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This paper presents a novel two-dimensional (2-D) defected ground array (DGA) for planar circuits, which has horizontal and vertical periodicities of defect structure. The defected unit cell of DGA is composed of a Sierpinski carpet structure to improve the effective inductance. Measurements show that the proposed DGA provides steeper cutoff characteristics, lower cutoff frequency, and higher slow-wave factors than the conventional periodic defected ground structure in the same occupied surface.