Table 1 Waveguide propagation modes and cutoff frequencies.

T-Coaxial

TEM, TE₁₁, TE₂₁, TE₃₁, TE₄₁

0.000, 26.213, 47.702, 60.035, 79.019

C-Circular

TE₁₁, TM₀₁, TE₂₁, TE₀₁, TM₁₁, TE₃₁, TM₂₁, TE₄₁, TE₁₂, TM₀₁

10.853, 14.176, 18.004, 22.586, 22.586, 24.764, 30.273, 31.345, 31.427, 32.539

R-Rectangular

TE₁₀, TE₂₀, TE₃₀, TE₀₁, TE₁₁, TM₁₁, TE₂₁, TM₂₁

8.671, 17.341, 26.012, 31.250, 32.431, 32.431, 35.739, 35.739

E-Elliptical (E1-E7)

TE_c,11y, TE_s,11x, TM_c,01y, TM_c,11x, TM_s,11x

5.1909, 16.2199, 16.5464, 19.6404, 31.442

5.2403, 12.0999, 12.5927, 15.8764, 23.385

5.2873, 9.6878, 10.4023, 13.9117, 18.792

5.3226, 8.0866, 9.0332, 12.7382, 15.8409

5.3589, 6.9545, 8.1430, 12.0370, 13.8358

5.3836, 6.0933, 7.5163, 11.5654, 12.3698

5.4228, 5.4228, 7.0829, 11.2854, 11.2854