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A Step-by-Step Approach to Bandpass/Channel Filter Design

A Step-by-Step Approach to Bandpass/Channel Filter Design

Augustine O. Nwajana
Copyright: © 2021 |Volume: 10 |Issue: 2 |Pages: 14
ISSN: 2578-7551|EISSN: 2578-7543|EISBN13: 9781799863557|DOI: 10.4018/IJECME.2021070101
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MLA

Nwajana, Augustine O. "A Step-by-Step Approach to Bandpass/Channel Filter Design." IJECME vol.10, no.2 2021: pp.1-14. http://doi.org/10.4018/IJECME.2021070101

APA

Nwajana, A. O. (2021). A Step-by-Step Approach to Bandpass/Channel Filter Design. International Journal of Electronics, Communications, and Measurement Engineering (IJECME), 10(2), 1-14. http://doi.org/10.4018/IJECME.2021070101

Chicago

Nwajana, Augustine O. "A Step-by-Step Approach to Bandpass/Channel Filter Design," International Journal of Electronics, Communications, and Measurement Engineering (IJECME) 10, no.2: 1-14. http://doi.org/10.4018/IJECME.2021070101

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Abstract

This paper presents a step-by-step approach to the design of bandpass/channel filters. The chapter serves as a reference source to microwave stakeholders with little or no filter design experience. It should help them design and implement their first filter device using the microstrip technology. A 3-pole Chebyshev bandpass filter (BPF) with centre frequency of 2.6 GHz, fractional bandwidth of 3%, passband ripple of 0.04321 dB, and return loss of 20 dB has been designed, implemented, and simulated. The designed filter implementation is based on the Rogers RT/Duroid 6010LM substrate with a 10.7 dielectric constant and 1.27 mm thickness. The circuit model and microstrip layout results of the BPF are presented and show good agreement. The microstrip layout simulation results show that a less than 1.8 dB minimum insertion loss and a greater than 25 dB in-band return loss were achieved. The overall device size of the BPF is 18.0 mm by 10.7 mm, which is equivalent to 0.16λg x 0.09λg, where λg is the guided wavelength of the 50 Ohm microstrip line at the filter centre frequency.

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