Waveguide dimensions, sizes and cut off frequencies

- RF waveguide dimensions, waveguide sizes, cut off frequencies and other waveguide data and parameters for WG00 to WG32.

RF waveguides used for the transmission of radio frequency energy come in a variety of sizes. Waveguide sizes and waveguide dimensions determine the properties of the Rf waveguide, including parameters such as the waveguide cut off frequency and so forth. Accordingly waveguides come in a variety of standard sizes.

The figures given below are for rigid rectangular waveguides, as these are the most common form of waveguide used.

Waveguide dimensions, sizes and waveguide cut-off frequencies
for rigid rectangular RF waveguides

WG Design	Freq range*	Waveguide cut off *	Theoretical attn dB / 30m	Material	Band	Waveguide dimensions (mm)
WG00	0.32 - 0.49	0.256	0.051 - 0.031	Alum	B	584 x 292
WG0	0.35 - 0.53	0.281	0.054 - 0.034	Alum	B,C	533 x 267
WG1	0.41 - 0.625	0.328	0.056 - 0.038	Alum	B,C	457 x 229
WG2	0.49 - 0.75	0.393	0.069 - 0.050	Alum	C	381 x 191
WG3	0.64 - 0.96	0.513	0.128 - 0.075	Alum	C	292 x 146
WG4	0.75 - 1.12	0.605	0.137 - 0.095	Alum	C,D	248 x 124
WG5	0.96 - 1.45	0.766	0.201 - 0.136	Alum	D	196 x 98
WG6	1.12 - 1.70	0.908	0.317 - 0.212	Brass	D	165 x 83
WG6	1.12 - 1.70	0.908	0.269 - 0.178	Alum	D	165 x 83
WG7	1.45 - 2.20	1.157			D,E	131 x 65
WG8	1.70 - 2.60	1.372	0.588 - 0.385	Brass	E	109 x 55
WG8	1.70 - 2.60	1.372	0.501 - 0.330	Alum	E	109 x 55
WG9A	2.20 - 3.30	1.736	0.877 - 0.572	Brass	E,F	86 x 43
WG9A	2.20 - 3.30	1.736	0.751 - 0.492	Alum	E,F	86 x 43
WG10	2.60 - 3.95	2.078	1.102 - 0.752	Brass	E,F	72 x 34
WG10	2.60 - 3.95	2.078	0.940 - 0.641	Alum	E,F	72 x 34
WG11A	3.30 - 4.90	2.577			F,G	59 x 29
WG12	3.95 x 5.85	3.152	2.08 - 1.44	Brass	F,G	48 x 22
WG12	3.95 x 5.85	3.152	1.77 - 1.12	Alum	F,G	48 x 22
WG13	4.90 - 7.05	3.711			G,H	40 x 20
WG14	5.85 - 8.20	4.301	2.87 - 2.30	Brass	H	35 x 16
WG14	5.85 - 8.20	4.301	2.45 - 1.94	Alum	H	35 x 16
WG15	7.05 - 10.0	5.26	4.12 - 3.21	Brass	I	29 x 13
WG15	7.05 - 10.0	5.26	3.50 - 2.74	Alum	I	29 x 13

* waveguide cut off frequency in GHz and for TE10 mode
Alum = Aluminium