Akademik Veri Yönetim Sistemi
Wireless Personal Communications, cilt.132, sa.4, ss.2283-2292, 2023 (SCI-Expanded)
In the paper, a tunable split-ring based microstrip band-pass filter is proposed and the corresponding measurement and simulation results are presented. The proposed filter has a band-pass performance around 2.2 GHz. The prototype of the proposed filter is fabricated by using Arlon DiClad 880 substrate with an electrical permittivity of ϵr = 2.2. There is a quite good agreement between the measurement and simulation results with a slight (∼ 0.3 GHz) discrepancies. Also, the frequency tuning performance is achieved by using a simplistic varactor diode model of SMV1247-079LF placed on one gap of the ring. By changing the capacitance on the model, the center resonance frequency of the filter can be adjusted in the range of 2.4–3.4 GHz band. The simulation results demonstrate tunable band-pass characteristics of the proposed design. Modelling and the numerical analysis of the filter design are carried out by using CST Microwave Studio simulator. An equivalent circuit modeling of the proposed filter is presented along with the corresponding simulations. The results of the analysis on the effects of the physical dimensions of the filter on the filter performance are presented. Also, the variation of the resonance frequency with respect to the voltage value on the varactor diode was summarized with cubic spline method and displayed.