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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2017-06-26
Ultra-Wideband Bandpass Filter with Sharp Tuned Notched Band Rejection Based on CRLH Transmission-Line Unit Cell
By
Eman Gamal Ouf,

    Dr. Eman Gamal Ouf

    Electronics Research Institute

    Egypt

    Homepage

Ashraf Shouki Seliem Mohra,

    Prof. Ashraf Shouki Seliem Mohra

    Department of Electrical Engineering, Faculty of Engineering

    University of Benha

    Egypt

    Homepage

Esmat A. F. Abdallah,

    Dr. Esmat A. F. Abdallah

    Microstrip Department

    Electronics Research Institute

    Egypt

    Homepage

Hadia El-Hennawy

    Professor Hadia El-Hennawy

    Electronics and Communications Dept.

    Ain Shams University

    Egypt

    Homepage

Progress In Electromagnetics Research Letters, Vol. 69, 9-14, 2017
doi:10.2528/PIERL17043004 | Google Scholar

Abstract
The proposed filter satisfies the Federal Communications Commission ultra-wideband (FCC-UWB) specifications, and also creates and controls sharp rejection notch-bands within the filter's passband in order to provide interference immunity from unwanted radio signals, such as wireless local area networks (WLAN) and worldwide interoperability for microwave access (WIMAX) that cohabit within the UWB spectrum. This filter is based on CRLH concept consisting of an asymmetric transmission line unit cell with a short circuited inductive stub to realize high performance in an operation band from 3.1 to 10.6 GHz with a very compact size of 16.4mm × 5.0 mm. The main advantage of the proposed filter is that four notch frequencies are tuned in the UWB frequency band. The notch frequencies of the filter can be changed by increasing the length of the coupling stub which is controlled by using switching matrix equipment (Mini Circuit) instead of PIN diodes. To validate the design theory, a microstrip UWB BPF with four notch bands centered at frequencies 6.18, 5.9, 5.7, and 5.5GHz is designed and fabricated.
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Citation
Eman Gamal Ouf, Ashraf Shouki Seliem Mohra, Esmat A. F. Abdallah, and Hadia El-Hennawy, "Ultra-Wideband Bandpass Filter with Sharp Tuned Notched Band Rejection Based on CRLH Transmission-Line Unit Cell," Progress In Electromagnetics Research Letters, Vol. 69, 9-14, 2017.
doi:10.2528/PIERL17043004
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