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    RFT based efficient broadband chebyshev filter design of (K and Ka) range
    (Institute of Electrical and Electronics Engineers Inc., 2023) Almusali, Raqia S.; Atilla, Doğu Çağdaş
    A stepped impedance bandpass Chebyshev filter design covers the K and Ka bands which includes three of 5G RF2 bands n257, n258, and n261 via real frequency technique (RFT) is studied, synthesized and simulated in this work. RFT is a complex math work, for that reason MATLAB employed for generating polynomials needed for this technique, ADS utilized for designing and simulating the BP-filter for verifying the resulted gain of the circuit. The characteristics of the filter listed in details in this paper, the characteristics of the final design after optimization are fl, f2 are 22.22, and 29.5 GHz respectively, Insertion Loss (IL) is set as 0.5dB. The achieved attenuation reached -55, the initial and final number of order before and after the optimization are n=3 and n=8 respectively. RFT technique yielded an accurate synthesized values, small size, and sharp slop.