A NOVEL G-SHAPED SLOT ULTRA-WIDEBAND BANDPASS FILTER WITH NARROW NOTCHED BAND | Zendy

Lina Chen | Zendy; YongChang Jiao | Zendy; Huanhuan Xie | Zendy; FuShun Zhang | Zendy

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A NOVEL G-SHAPED SLOT ULTRA-WIDEBAND BANDPASS FILTER WITH NARROW NOTCHED BAND

Author(s) -

Lina Chen,

YongChang Jiao,

Huanhuan Xie,

FuShun Zhang

Publication year - 2011

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/pierl10120101

Subject(s) - band pass filter , ultra wideband , wideband , materials science , acoustics , electronic engineering , physics , engineering

A novel G-shaped slot ultra-wideband (UWB) bandpass fllter with a very narrow notched band is proposed. The basic ultra- wideband fllter is short-circuited stub bandpass fllter consisting of shunted ‚=4 short-circuited stubs and ‚=4 connecting lines. To avoid the interferences such as WLAN signals. The G-shaped slot embedded in the stub fllter is used to obtain the notched band inside the UWB passband. Additional U-shaped defected ground structures are adopted to improve the out-band suppression. Measured results show that the proposed fllter has an ultra-wide bandwidth from 3.1GHz to 10.6GHz, and the insertion loss is less than 1dB. Speciflcally, the fabricated fllter possesses a 10dB notched fractional bandwidth (FBW) of 2.36% at the notched center frequency of 5.8GHz. It also achieves a stop band with 20dB attenuation.

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