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http://dx.doi.org/10.5762/KAIS.2020.21.1.753

A Study on the Characteristics Improvement of Chebyshev Filter Function  

You, Jae-Hoon (Military Manpower Administration of Jeonbuk)
Choi, Seok-Woo (Department of Electrical Engineering, Jeonbuk National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.1, 2020 , pp. 753-759 More about this Journal
Abstract
A modified Chebyshev lowpass filter function with progressively diminishing ripples in the passband is proposed and analyzed in the frequency domain. Owing to the diminishing ripples, the passband magnitude characteristic of the proposed Chebyshev function has improved compared to the classical Chebyshev function. In addition, the phase characteristics of the proposed Chebyshev function were improved considerably compared to that of the Chebyshev function, and the time delay of the proposed function was much simpler and flatter. In addition, the proposed Chebyshev filter was realizable by the passive doubly terminated ladder network delivering maximum power transfer for the order n, even or odd, thus making themselves amenable to low-sensitivity active RC or switched capacitor filters through the simulation techniques. To verify the proposed Chebyshev filter characteristics, a 6th order passive doubly terminated ladder lowpass filter was designed and analyzed using the MATLAB and SPICE program. Thus, the proposed Chebyshev function can remove the drawbacks of the classical Chebyshev function and could be applicable to the design of a filter with an improved filter size, phase, and time delay characteristics for various signal processing.
Keywords
Chebyshev Filter Function; Passband Ripple; Filter Characteristics; Passive Doubly-terminated Network; Maximum Power Transfer;
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