International Journal of RF and Microwave Computer-Aided Engineering / 2024 / Article / Tab 1 / Research Article
Design of Cross-Coupled Bandpass Filters with Flexible Coupling via Half-Mode Substrate-Integrated Waveguide Table 1 Comparison with other reported SIW BPFs.
Ref. Technique Negative coupling Additional coupling structure Layers Np Nz (GHz)FBW (%) IL (dB) Size ( ) Profile ( ) [6 ] SIW+shorted CPW Y N 1 5 4 7.5 5.2 2.2 1.09 0.025 [7 ] SIW+SIGCPW Y Y 1 3 2 9.96 4.07 1.64 1.25 0.025 [13 ] SIW+HMSIW N N 1 3/3 2 5/7.5 5.46/4.75 1.65/2.25 1.53 0.014 HMSIW Y Y 4/4 4 5/8.5 6.26/7.75 2.02/1.82 1.10 0.016 [19 ] SIW+CRLH+meander-line N N 1 5 2 10.14 12.9 0.91 0.63 0.025 [21 ] Multimode circular SIW N Y 1 5/5 4 46.7/60 11.7/6.8 2/2.8 2.91 ā [22 ] Multimode folded SIW N N 2 3 3 10.18 3.2 2.33 0.76 0.026 2/2 4 8.71/10.1 1.9/2.7 2.8/1.98 0.76 0.022 4 4 10.08 4.5 1.82 0.77 0.025 [32 ] Multimode HMSIW N Y 1 4 4 10 5.3 2.4 1.75 0.025 [33 ] Multimode SIW N N 1 5 2 10 3.5 2.04 3.77 0.025 This work SIW+HMSIW Y N 1 3 1 4.90 14.48 1.22 0.94 0.016 1 5.06 12.65 1.92 0.93 Dual-mode SIW+dual-mode HMSIW 3/3 6 5.02/7.85 15.84/20.64 1.34/1.47 1.11
: center frequency; FBW: fractional bandwidth; IL: insertion loss; Np: number of transmission poles; Nz: number of TZs; Layers: number of substrate layers;
: guided wavelength in the dielectric substrate at the center frequency of the passband or the first passband of the multiband.