Design of Dual-Band Bandpass Filter Based on Chained Chebyshev Polynomials of the Second Kind

Ng, G.S. and Leong, Y. and Cheab, S. and Alias, I.B. and Soeung, S. (2020) Design of Dual-Band Bandpass Filter Based on Chained Chebyshev Polynomials of the Second Kind. [Other Publication]

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This paper extends the mathematical synthesis on chaining Chebyshev polynomials of the second kind for the application of a dual-band microstrip filter. The proposed filter allows the flexibility to place multiple inner band transmission zeros for better inner band rejection without affecting the equiripple characteristics of chained Chebyshev polynomials of the second kind. This proposed approach can achieve high adjacent bands' selectivity and optimum ripple levels for both passband and stopband. The design method allows one transmission zero reduction and can be introduced at different locations within inner stopband. An eighth-order microstrip filter centred at a frequency of 3.5 GHz, with a fractional bandwidth of 12 in each passband, has been simulated and fabricated to verify the proposed method. A good agreement is found between the simulated and measured filter responses. The proposed filtering function can also be implemented in various filter fabrication technologies for millimetre-wave applications. © 2020 IEEE.

Item Type: Other Publication
Impact Factor: cited By 0
Uncontrolled Keywords: Bandpass filters; Bandwidth; Chebyshev filters; Design; Microwave filters; Millimeter waves; Polynomials; Transmissions, Chebyshev polynomials of the second kind; Dual-band bandpass filter; Filter fabrication; Filter response; Filtering functions; Fractional bandwidths; Millimetre wave applications; Transmission zeros, Microstrip filters
Depositing User: Ms Sharifah Fahimah Saiyed Yeop
Date Deposited: 19 Aug 2021 05:13
Last Modified: 19 Aug 2021 05:13

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