Akademik Veri Yönetim Sistemi
Gumushane Universitesi Fen Bilimleri Dergisi, cilt.13, sa.3, ss.646-660, 2023 (Scopus, TRDizin)
Rectangular waveguide (RWG) filters are commonly utilized in microwave technology due to their low loss and high power carrying capacity. In this study, analytical method design and MATLAB codes of band-pass RWG filters with symmetrical inductive iris structure in the desired degree and frequency region are given. As an example of the design, a 5th order filter in the 4.5-4.8 GHz range is analytically and numerically designed. In addition, the order of filter, the effect of different iris thicknesses and various iris types on the filter performance is investigated. The results revealed that the thickness of the iris has an effect on the frequency response of the filter, but the bending at the iris tips or the bending at the junction of the iris with the waveguide has significantly no effect on the frequency response. The filter designed with a bandwidth of 6.5% has a wider bandwidth than filters designed with a similar frequency. According to the analytical results, in the 4.5-4.8 GHz range, the value of S11 is less than-20 dB, while the value of S21 in the same region is around 0 dB. On the other hand, according to the simulation results obtained with the CST Studio Suite Microwave program, in the same frequency band, the value of S11 is less than-18 dB, while the value of S21 in the same region is about 0.09 dB.