RECONFIGURABLE BANDSTOP FILTER WITH ADJUSTABLE BANDWIDTH AND CENTER FREQUENCY | Zendy

Kaiyu Zhao | Zendy; Lin Li | Zendy; Qinghua Wu | Zendy; Weiqiang Xu | Zendy; Yaming Wang | Zendy

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RECONFIGURABLE BANDSTOP FILTER WITH ADJUSTABLE BANDWIDTH AND CENTER FREQUENCY

Author(s) -

Kaiyu Zhao,

Lin Li,

Qinghua Wu,

Weiqiang Xu,

Yaming Wang

Publication year - 2012

Publication title -

progress in electromagnetics research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.245

H-Index - 33

ISSN - 1937-6480

DOI - 10.2528/pierl12090902

Subject(s) - center frequency , band stop filter , bandwidth (computing) , center (category theory) , computer science , electronic engineering , telecommunications , band pass filter , engineering , low pass filter , chemistry , crystallography

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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