A New Class of Dual-Band Waveguide Filters Based on Chebyshev Polynomials of the Second Kind

This paper presents for the first time a method of mathematical synthesis involving chaining of Chebyshev polynomials of the second kind for the application of a dual-band waveguide filter. This method takes advantage of second kind Chebyshev polynomials that have high out-of-band rejection, and ove...

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Main Authors: Leong, Y., Cheab, S., Soeung, S., Wong, P.W.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.23118 /
Published: Institute of Electrical and Electronics Engineers Inc. 2020
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85079745758&doi=10.1109%2fACCESS.2020.2972160&partnerID=40&md5=fbc8089e1d2fb88bc7b544413cdaf233
http://eprints.utp.edu.my/23118/
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spelling utp-eprints.231182021-08-19T05:36:05Z A New Class of Dual-Band Waveguide Filters Based on Chebyshev Polynomials of the Second Kind Leong, Y. Cheab, S. Soeung, S. Wong, P.W. This paper presents for the first time a method of mathematical synthesis involving chaining of Chebyshev polynomials of the second kind for the application of a dual-band waveguide filter. This method takes advantage of second kind Chebyshev polynomials that have high out-of-band rejection, and overcomes unequal-ripple properties. It is applicable to high filter orders greater than five, and will always possess symmetrical dual-band filter properties. This proposed approach is able to achieve an optimum and constant ripple, the flexibility of return loss, and high adjacent band's rejection. The design method is based on suitably defined transmission zeros at the centred frequency to the chained Chebyshev of the second kind. A sixth-order waveguide filter based on a prescribed return loss of 15 dB centred at a frequency of 28 GHz, with a fractional bandwidth of 1 in each passband, has been implemented and fabricated. The measured results show that the return loss, total bandwidth, and the frequency shift are 12 dB, 860 MHz, and 0.24, respectively. The measured and ideal responses of the waveguide model are in a good agreement. © 2013 IEEE. Institute of Electrical and Electronics Engineers Inc. 2020 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85079745758&doi=10.1109%2fACCESS.2020.2972160&partnerID=40&md5=fbc8089e1d2fb88bc7b544413cdaf233 Leong, Y. and Cheab, S. and Soeung, S. and Wong, P.W. (2020) A New Class of Dual-Band Waveguide Filters Based on Chebyshev Polynomials of the Second Kind. IEEE Access, 8 . pp. 28571-28583. http://eprints.utp.edu.my/23118/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description This paper presents for the first time a method of mathematical synthesis involving chaining of Chebyshev polynomials of the second kind for the application of a dual-band waveguide filter. This method takes advantage of second kind Chebyshev polynomials that have high out-of-band rejection, and overcomes unequal-ripple properties. It is applicable to high filter orders greater than five, and will always possess symmetrical dual-band filter properties. This proposed approach is able to achieve an optimum and constant ripple, the flexibility of return loss, and high adjacent band's rejection. The design method is based on suitably defined transmission zeros at the centred frequency to the chained Chebyshev of the second kind. A sixth-order waveguide filter based on a prescribed return loss of 15 dB centred at a frequency of 28 GHz, with a fractional bandwidth of 1 in each passband, has been implemented and fabricated. The measured results show that the return loss, total bandwidth, and the frequency shift are 12 dB, 860 MHz, and 0.24, respectively. The measured and ideal responses of the waveguide model are in a good agreement. © 2013 IEEE.
format Article
author Leong, Y.
Cheab, S.
Soeung, S.
Wong, P.W.
spellingShingle Leong, Y.
Cheab, S.
Soeung, S.
Wong, P.W.
A New Class of Dual-Band Waveguide Filters Based on Chebyshev Polynomials of the Second Kind
author_sort Leong, Y.
title A New Class of Dual-Band Waveguide Filters Based on Chebyshev Polynomials of the Second Kind
title_short A New Class of Dual-Band Waveguide Filters Based on Chebyshev Polynomials of the Second Kind
title_full A New Class of Dual-Band Waveguide Filters Based on Chebyshev Polynomials of the Second Kind
title_fullStr A New Class of Dual-Band Waveguide Filters Based on Chebyshev Polynomials of the Second Kind
title_full_unstemmed A New Class of Dual-Band Waveguide Filters Based on Chebyshev Polynomials of the Second Kind
title_sort new class of dual-band waveguide filters based on chebyshev polynomials of the second kind
publisher Institute of Electrical and Electronics Engineers Inc.
publishDate 2020
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85079745758&doi=10.1109%2fACCESS.2020.2972160&partnerID=40&md5=fbc8089e1d2fb88bc7b544413cdaf233
http://eprints.utp.edu.my/23118/
_version_ 1741196623771336704
score 11.62408

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