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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2014-06-05
A Novel Defected Ground Structure with Both Adjustable Center Frequency and Reconfigurable Bandwidth
By
Xue Cao,

    Dr. Xue Cao

    Department of Communication Engineering

    Zhejiang Sci-Tech University

    China

    Homepage

Kai-Yu Zhao,

    Mr. Kai-Yu Zhao

    Department of Electrical Engineering

    University of Southern California

    USA

    Homepage

Li-Li Yang,

    Dr. Li-Li Yang

    Department of Information Science and Electronic Engineering

    Zhejiang University

    China

    Homepage

Lin Li

    Dr. Lin Li

    Zhejiang Sci-Tech University

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 46, 89-94, 2014
doi:10.2528/PIERL14040310 | Google Scholar

Abstract
A new defected ground structure (DGS) with tunable working frequency and reconfigurable bandwidth is proposed in this paper. The prototype combines the conventional DGS with T-shaped patch featuring narrow bandwidth and two such units located symmetrically featuring wide bandwidth. The proposed structure is designed, simulated and measured. By embedding two reversely-set PIN diodes and four varactors, the proposed structure achieves a narrow bandwidth with a tuning range of 21.1% and a wide bandwidth with a tuning range of 24.6%. In comparison, the bandwidth (-10 dB) is about 13.6% for the narrowband state and 49.2% for the broadband state, where an approximately 4-times extension is obtained.
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Citation
Xue Cao, Kai-Yu Zhao, Li-Li Yang, and Lin Li, "A Novel Defected Ground Structure with Both Adjustable Center Frequency and Reconfigurable Bandwidth," Progress In Electromagnetics Research Letters, Vol. 46, 89-94, 2014.
doi:10.2528/PIERL14040310
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