Rectangular waveguide: TE_mn, TM_mn with cutoff ω_c = c√((mπ/a)²+(nπ/b)²); coax supports TEM; used in radar, microwave engineering.
Rectangular waveguide: TE_mn, TM_mn with cutoff ω_c = c√((mπ/a)²+(nπ/b)²); coax supports TEM; used in radar, microwave engineering.