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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2022-04-05
Poly-Resonator Lowpass Filter for 26th Order Harmonic Suppression
By
Thevaruparambil Abdulnazer Nisamol,

    Dr. Thevaruparambil Abdulnazer Nisamol

    Division of Electronics

    Cochin University of Science and Technology

    India

    Homepage

Parambil Abdulla,

    Dr. Parambil Abdulla

    School of Engineering

    Cochin University of Science and Technology

    India

    Homepage

Thulaseedharan Rekha

    Dr. Thulaseedharan Rekha

    Department of Electronics

    NSS College Rajakumari, Affiliated to Mahatma Gandhi University

    India

    Homepage

Progress In Electromagnetics Research M, Vol. 109, 179-189, 2022
doi:10.2528/PIERM22022502 | Google Scholar

Abstract
In this brief, an ultra-vast stopband lowpass filter with miniaturized circuit size for 26th harmonic suppression using poly-resonators and an inclined stepped-impedance transmission line (ISTL) is developed. The poly-resonators such as radial stub resonator and resonator modules constitute the significant part of the filter, and the discontinuity in the inclined angle of the ISTL is balanced by 75% chamfering. The coupling with ISTL has influence over the stopband behavior, and the equivalent circuit for the first transmission zero is analysed. The normalised circuit size is reduced to 16.6%, and additional frequency rejection is achieved using resonator modules RM1 and RM2. The relative stopband width of 185.4% is attained with a 3 dB cut-off frequency of 1.51 GHz. L band communication applications having circuit area limitations can make use of the Poly-resonator ISTL filter for achieving high-frequency noise rejection.
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Citation
Thevaruparambil Abdulnazer Nisamol, Parambil Abdulla, and Thulaseedharan Rekha, "Poly-Resonator Lowpass Filter for 26th Order Harmonic Suppression," Progress In Electromagnetics Research M, Vol. 109, 179-189, 2022.
doi:10.2528/PIERM22022502
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