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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2013-07-30
Design of Dual Band Filter Based on a Novel DGS Structure
By
Yang Li,

    Dr. Yang Li

    School of Physical Electronics

    University of Science and Technology of China

    China

    Homepage

Hong-Chun Yang,

    Dr. Hong-Chun Yang

    School of Physical Electronics

    University of Electronic Science and Technology of China

    China

    Homepage

Shao-Qiu Xiao

    Dr. Shao-Qiu Xiao

    School of Electronics and Information Technology

    Sun Yat-sen University

    P. R. China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 41, 167-174, 2013
doi:10.2528/PIERL13061503 | Google Scholar

Abstract
This letter presents a dual-band bandpass filter (BPF) using interdigital coupling lines with a new defected ground structure (DGS) pattern. Traditional DGS structures are mainly used to realize wide bandstop characteristics. In this letter, by introducing a pair of coupling stubs in the aperture of the DGS, a narrow passband can be achieved within a wide stopband, so a dual-band bandpass filter can be implemented. An equivalent circuit model is derived to describe the filter. And the circuit simulation result agrees well with the EM simulation one. The position and bandwidth of the two passbands can be designed and adjusted independently. In order to verify the theory, a dual-band bandpass filter is designed, fabricated and measured. The simulated and measured results are in good agreement.
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Citation
Yang Li, Hong-Chun Yang, and Shao-Qiu Xiao, "Design of Dual Band Filter Based on a Novel DGS Structure," Progress In Electromagnetics Research Letters, Vol. 41, 167-174, 2013.
doi:10.2528/PIERL13061503
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