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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2009-06-12
A New Approach of Dual-Band Filters by Stepped Impedance Simplified Cascaded Quadruplet Resonators with Slot Coupling
By
Wen-Jeng Lin,

    Dr. Wen-Jeng Lin

    Institute of Microelectronics, Department of Electrical

    National Cheng-Kung University

    Taiwan

    Homepage

Chin-Sheng Chang,

    Dr. Chin-Sheng Chang

    Institute of Microelectronics, Advanced Optoelectronic Technology Center

    National Cheng-Kung University

    Taiwan

    Homepage

Jian-Yi Li,

    Dr. Jian-Yi Li

    Institute of Microelectronics, Department of Electrical Engineering

    National Cheng-Kung University

    Taiwan, R.O.C.

    Homepage

Ding-Bing Lin,

    Prof. Ding-Bing Lin

    Department of Electronic and Computer Engineering

    National Taiwan University of Science and Technology

    Taiwan

    Homepage

Lih-Shan Chen,

    Dr. Lih-Shan Chen

    Department of Electronic Engineering

    I-Shou University

    Taiwan

    Homepage

Mau-Phon Houng

    Dr. Mau-Phon Houng

    Institute of Microelectronics, Department of Electrical

    National Cheng-Kung University

    Taiwan

    Homepage

Progress In Electromagnetics Research Letters, Vol. 9, 19-28, 2009
doi:10.2528/PIERL09042801 | Google Scholar

Abstract
This paper presents novel approaches for dual-band bandpass filter design utilizing stepped impedance simplified cascaded quadruplet resonators (SI-SCQRs) with slot coupling. A pair of SI-SCQRs forms a cross coupled dual-band filtering path to provide high selectivity passband response, and a slot coupling structure provides SI-SCQRs with another filtering path for improving and controlling the performances of the dual-band filter such as insertion loss and bandwidth. Measured insertion losses are 0.26 dB and 1.2 dB and return losses are better than 16.3 dB and 15.2 dB at the first and second passband frequencies, respectively, with a mid-stopband attenuation around 30 dB.
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Citation
Wen-Jeng Lin, Chin-Sheng Chang, Jian-Yi Li, Ding-Bing Lin, Lih-Shan Chen, and Mau-Phon Houng, "A New Approach of Dual-Band Filters by Stepped Impedance Simplified Cascaded Quadruplet Resonators with Slot Coupling," Progress In Electromagnetics Research Letters, Vol. 9, 19-28, 2009.
doi:10.2528/PIERL09042801
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