Circular Waveguide Sizes Table


Frequency Band Frequency (GHz) Circular Waveguide Size (Inches) Circular Waveguide Size (mm)
X 8.2-9.97 1.094 27.79
8.5-11.6 0.938 23.83
9.97-12.4 0.797 20.24
Ku 12.4-15.9 0.688 17.48
13.4-18.0 0.594 15.08
15.9-18.0 0.500 12.70
K 17.5-20.5 0.455 11.56
20-24.5 0.396 10.06
24-26.5 0.328 8.33
Ka 26.5-33 0.315 8.00
33-38.5 0.250 6.35
38.5-40 0.219 5.56
Q 33-38.5 0.250 6.35
38.5-43 0.219 5.56
43-50 0.188 4.78
U 40-43 0.210 5.33
43-50 0.188 4.78
50-60 0.165 4.19
V 50-58 0.165 4.19
58-68 0.141 3.58
68-75 0.125 3.18
E 60-66 0.136 3.45
66-82 0.125 3.18
82-90 0.094 2.39
W 75-88 0.112 2.84
88-110 0.094 2.39
F 90-115 0.089 2.26
115-140 0.075 1.91
D 110-140 0.073 1.85
140-160 0.059 1.50
G 140-180 0.058 1.47
180-220 0.045 1.14
? 170-260 0.049 1.25
220-325 0.039 0.99