资料介绍
双频带通滤波器Coupling Dispersion of Parallel-Coupled Microstrip Lines for DualBand Filters with Controllable Fractional Pass bandwidths
Sheng Sun a) and Lei Zhu b) School of Electrical & Electronic Engineering, Nanyang Technological University, Singapore E-mail: a) sunsheng@pmail.ntu.edu.sg; b) ezhul@ntu.edu.sg
Abstract ― Dual-band bandpass filters with controllable fractional bandwidths (FBWs) are constructed by cascading the multiple λ/2 stepped-impedance resonators (SIRs) through the distributed parallel-coupled microstrip lines (PCMLs). By suitably choosing the aspect ratio of two strip widths or impedances in the SIR, the first two resonant frequencies are allocated to 2.4 and 5.2 GHz for dual-band filter application. These PCMLs with different overlapped lengths are investigated to show their dis
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