Hello,

i designed a SIW say x=12, y=12mm. and got fc ~10GHz(HPF). Now introduced a slot of size 4x4mm at centre and want to see effect on freq. band(BPF) of slot.. Where should it shift??? In my trial..its fo is coming near around 25 GHz... Is this observation correct?? Do freq. shift to higher side by introducing a slot on upper conductor of SIW???Pls guide

Thanks Nitin