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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2020-06-22
Ultra-Compact Bandpass Filter with Super Wide Upper Stopband
By
Yang Xiong,

    Dr. Yang Xiong

    Southwest China Institute of Electronic Technology

    China

    Homepage

Wei Zhang,

    Dr. Wei Zhang

    College of Electronic Information and Optical Engineering, Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network T

    Nankai University

    China

    Homepage

Li Tian Wang

    Dr. Li Tian Wang

    Nankai University

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 92, 61-67, 2020
doi:10.2528/PIERL19110602 | Google Scholar

Abstract
An S-band bandpass filter based on quarter wavelength stepped-impedance resonator (SIR) is presented in this paper. Two SIRs are loaded to the BPF to obtain wide stopband suppression. The center frequency f0 of the bandpass filter is located at 2.105 GHz with 3-dB fraction bandwidth (FBW) of 11.9%. It shows that the spurs free upper stopband with 15 dB rejection level can extend to 40 GHz (19f0). The circuit size of this filter is extremely compact, which occupies only 7.35 mm × 7.5 mm.
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Citation
Yang Xiong, Wei Zhang, and Li Tian Wang, "Ultra-Compact Bandpass Filter with Super Wide Upper Stopband," Progress In Electromagnetics Research Letters, Vol. 92, 61-67, 2020.
doi:10.2528/PIERL19110602
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