A Compact Wideband SIW Bandpass Filter with Wide Stopband and High Selectivity
AbstractA novel method to design a wideband substrate integrated waveguide (SIW) bandpass filter (BPF) with compact size, wide stopband and high selectivity is presented. In this method some unique electromagnetic band-gap (EBG) cells are periodically etched on the top layer of SIW to realize a wide passband propagating below the equivalent waveguide cutoff frequency. By changing the configuration of EBG cells, undesired harmonics in upper stopband can be suppressed and a wideband BPF with wide stopband can be obtained. By symmetrically loading two complementary split ring resonators (CSRRs) on the tapered gradient lines of the input/output ports, a transmission zero near the passband can be introduced, and it makes the frequency selectivity of upper sideband improve significantly. As a verification, a wideband SIW BPF with a 3.02 GHz absolute bandwidth (ABW) and a 64.7% fractional bandwidth (FBW) centered at 4.67 GHz is designed, simulated, manufactured, and measured. The results of the experiment and simulation are in good agreement. View Full-Text
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Huang, L.; Yuan, N. A Compact Wideband SIW Bandpass Filter with Wide Stopband and High Selectivity. Electronics 2019, 8, 440.
Huang L, Yuan N. A Compact Wideband SIW Bandpass Filter with Wide Stopband and High Selectivity. Electronics. 2019; 8(4):440.Chicago/Turabian Style
Huang, Lei; Yuan, Naichang. 2019. "A Compact Wideband SIW Bandpass Filter with Wide Stopband and High Selectivity." Electronics 8, no. 4: 440.
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