Ham Band Slot Antennas

Here are some worked examples of waveguide slot antennas using the Mathcad program by Stephen Bell. These examples are based on a sixteen-slot design (eight slots per face).

Ham Band Waveguide Slot Antennas

Band (Mhz)	Std. Waveguide Size	"A" dim.	"B" dim.	Offset From Center	Slot Length	Slot Vert. Spacing	Slot Width	Headspace
1296	WR650	6.5	3.25	0.49	4.46	6.39	0.64	6.39
2304	WR340	3.4	1.7	0.21	2.56	3.9	0.39	3.9
3456	WR284	2.84	1.34	0.31	1.71	2.14	0.21	2.14
3456	WR229	2.29	1.15	0.15	1.71	2.57	0.26	2.57
5760	WR187	1.87	0.87	0.25	1.02	1.23	0.12	1.23
5760	WR159	1.59	0.76	0.15	1.03	1.34	0.13	1.34
10368	WR102	1.02	0.51	0.14	0.57	0.69	0.07	0.69
10368	WR90	0.90	0.4	0.08	0.57	0.74	0.07	0.74
10368	WR75	0.75	0.38	0.05	0.57	0.88	0.09	0.88
24192	WR42	0.42	0.17	0.05	0.24	0.30	0.03	0.30

Note: dimensions given in inches