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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2012-10-17
Reconfigurable Bandstop Filter with Adjustable Bandwidth and Center Frequency
By
Kai-Yu Zhao,

    Dr. Kai-Yu Zhao

    Department of Information

    Zhejiang Sci-Tech University

    China

    Homepage

Lin Li,

    Dr. Lin Li

    Zhejiang Sci-Tech University

    China

    Homepage

Qing-Hua Wu,

    Dr. Qing-Hua Wu

    Department of Information

    Zhejiang Sci-Tech University

    China

    Homepage

Weiqiang Xu,

    Dr. Weiqiang Xu

    School of information

    Zhejiang Sci-Tech University

    China

    Homepage

Ya-Ming Wang

    Dr. Ya-Ming Wang

    Faculty of Informatics & Electronics

    Zhejiang Sci-Tech University

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 35, 125-133, 2012
doi:10.2528/PIERL12090902 | Google Scholar

Abstract
A bandstop filter with reconfigurable two-state center frequency and bandwidth is presented. The prototype of the proposed reconfigurable bandstop filter consists of one section of anti-coupled line short-circuited by an open low-impedance line. By introducing PIN diodes, this bandstop filter exhibits a lower stopband response centered at a lower frequency in the ON state, and a wider stopband response centered at a higher frequency in the OFF state. Filter using the proposed structure is designed, simulated and measured. The results confirm the designing method by showing a narrow stopband with the center frequency of 1 GHz and a wide stopband of 2.9 GHz bandwidth centered at 2.5 GHz respectively.
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Citation
Kai-Yu Zhao, Lin Li, Qing-Hua Wu, Weiqiang Xu, and Ya-Ming Wang, "Reconfigurable Bandstop Filter with Adjustable Bandwidth and Center Frequency," Progress In Electromagnetics Research Letters, Vol. 35, 125-133, 2012.
doi:10.2528/PIERL12090902
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