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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2012-06-19
A Compact Multimode Bandpass Filter with Extended Stopband Bandwidth
By
Kaixue Ma,

    Dr. Kaixue Ma

    School of Electrical and Electronic Engineering

    Nanyang Technological University

    Singapore

    Homepage

Shouxian Mou,

    Dr. Shouxian Mou

    School of Electrical and Electronic Engineering

    Nanyang Technological University

    Singapore

    Homepage

Keping Wang,

    Dr. Keping Wang

    Department of Electrical Engineering

    University of Washington

    USA

    Homepage

Kiat Seng Yeo

    Dr. Kiat Seng Yeo

    School of EEE

    Nanyang Technological University

    Singapore

    Homepage

Progress In Electromagnetics Research Letters, Vol. 32, 177-186, 2012
doi:10.2528/PIERL12042201 | Google Scholar

Abstract
A compact multimode bandpass filter with low insertion loss, high stopband rejection and wide stopband bandwidth is introduced by using cascaded multimode resonators and compact loading cells in combination. The measured minimum insertion loss is of 1.7dB including the connector loss in the input and output ports in the passband of 5.7~8 GHz. Through the use of cascaded multimode resonators, steep skirt selectivity and wide stopband up to 18 GHz can be achieved. When incorporated with the lowpass loading cells, which have elliptical low-pass response by using the source-load coupling, the stopband of the proposed filter can be further extended up to 40 GHz, with only negligible influence on the passband performance.
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Citation
Kaixue Ma, Shouxian Mou, Keping Wang, and Kiat Seng Yeo, "A Compact Multimode Bandpass Filter with Extended Stopband Bandwidth," Progress In Electromagnetics Research Letters, Vol. 32, 177-186, 2012.
doi:10.2528/PIERL12042201
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