Rectangular Waveguide Assemblies

Frontgrade offers a full range of rectangular waveguide assemblies. Designed using decades of waveguide design expertise, we have a solution to meet all of your design needs.

Frontgrade provides an extensive portfolio of rectangular waveguide assemblies.

Our rectangular waveguide assemblies include E-Bends, H-Bend, twists, straight and transition. In addition, we also offer custom waveguide assemblies as well as a range of cast bends in rectangular waveguide assemblies.

Rectangular E-Bend Waveguides

Frontgrade offers a variety of formed E-bends with flanges covering waveguide sizes WR-22 through WR-430. VSWR is less than 1.10 maximum over the full waveguide bandwidth while insertion loss is equivalent to straight waveguide sections. Additional sizes, configurations and combinations are available on request.

Model Number	Waveguide Size	Frequency Range (GHz)	Inside Bend Radius - Aluminum	Inside Bend Radius - Copper	Dimensions A or B (Min) - Aluminum	Dimensions A or B (Min) - Copper
REB22	WR - 22	33.00 - 50.00	–	0.50	–	1.23
REB28	WR - 28	26.5 - 40.00	0.50	0.50	1.24	1.24
REB34	WR - 34	22.00 - 33.00	0.50	0.50	1.26	1.26
REB42	WR - 42	18.00 - 26.5	0.50	0.50	1.26	1.26
REB51	WR - 51	15.00 - 22.00	0.50	0.50	1.30	1.30
REB62	WR - 62	12.40 - 18.00	0.50	0.50	1.33	1.33
REB75	WR - 75	10.00 - 15.00	0.62	0.62	1.61	1.61
REB90	WR - 90	8.20 - 12.40	0.75	0.75	1.75	1.75
REB102	WR - 102	7.00 - 11.00	0.88	0.88	2.06	2.06
REB112	WR - 112	7.05 - 10.00	0.88	0.88	2.06	2.06
REB137	WR - 137	5.85 - 8.20	1.00	1.00	2.25	2.25
REB159	WR - 159	4.90 - 7.05	1.25	1.25	2.71	2.71
REB187	WR - 187	3.95 - 5.85	1.50	1.50	3.00	3.00
REB229	WR - 229	3.30 - 4.90	2.00	2.00	3.64	3.64
REB284	WR - 284	2.60 - 3.95	2.50	2.50	5.00	5.00
REB284 R/H	WR - 284 R/H	2.60 - 3.95	2.00	–	4.04	–
REB340	WR - 340	2.20 - 3.30	4.00	–	7.31	–
REB430	WR - 430	1.70 - 2.60	6.00	–	9.79	–

Rectangular H-Bend Waveguides

Covering waveguide sizes WR-22 through WR-430, CAES’ H-bend Waveguides with flanges deliver VSWR of less than 1.10 maximum.

Model Number	Waveguide Size	Frequency Range (GHz)	Inside Bend Radius - Aluminum	Inside Bend Radius - Copper	Dimensions A or B (Min) - Aluminum	Dimensions A or B (Min) - Copper
RHB22	WR - 22	33.00 - 50.00	–	0.50	–	1.28
RHB28	WR - 28	26.5 - 40.00	0.62	0.62	1.31	1.31
RHB34	WR - 34	22.00 - 33.00	0.62	0.62	1.34	1.34
RHB42	WR - 42	18.00 - 26.50	0.62	0.62	1.38	1.38
RHB51	WR - 51	15.00 - 22.00	0.62	0.62	1.55	1.55
RHB62	WR - 62	12.40 - 18.00	0.62	0.62	1.60	1.60
RHB75	WR - 75	10.00 - 15.00	0.75	0.75	1.93	1.93
RHB90	WR - 90	8.20 - 12.40	0.75	0.75	2.00	2.00
RHB102	WR - 102	7.00 - 11.00	1.00	1.00	2.45	2.45
RHB112	WR - 112	7.05 - 10.00	1.00	1.00	2.50	2.50
RHB137	WR - 137	5.85 - 8.20	1.25	1.25	2.88	2.88
RHB159	WR - 159	4.90 - 7.05	2.00	2.00	3.86	3.86
RHB187	WR - 187	3.95 - 5.85	2.25	2.25	4.25	4.25
RHB229	WR - 229	3.30 - 4.90	2.50	2.50	4.71	4.71
RHB284	WR - 284	2.60 - 3.95	3.00	3.00	6.25	6.25
RHB284 R/H	WR - 284 R/H	2.60 - 3.95	3.50	–	6.63	–
RHB340	WR - 340	2.20 - 3.30	6.00	–	10.16	–
RHB430	WR - 430	1.70 - 2.60	8.00	–	12.86	–

Rectangular Twist Waveguides

Frontgrade manufactures a full range of rigid twist waveguides with flanges covering waveguide sizes WR-22 through WR-430. VSWR is less than 1.10 maximum over the full waveguide bandwidth while insertion loss is equivalent to straight waveguide sections. Additional sizes, configurations and combinations are available on request.

Model Number	Waveguide Size	Frequency Range (GHz)	Inside Bend Radius - Aluminum	Inside Bend Radius - Copper	Dimensions A or B (Min) - Aluminum	Dimensions A or B (Min) - Copper
RT22	WR - 22	33.00 - 50.00	–	1.00	–	2.26
RT28	WR - 28	26.50 - 40.00	1.00	1.00	2.26	2.26
RT34	WR - 34	22.00 - 33.00	1.06	1.06	2.32	2.32
RT42	WR - 42	18.00 - 26.50	1.12	1.12	2.38	2.38
RT51	WR - 51	15.00 - 22.00	1.18	1.18	2.44	2.44
RT62	WR - 62	12.40 - 18.00	1.25	1.25	2.51	2.51
RT75	WR - 75	10.00 - 15.00	1.50	1.50	3.00	3.00
RT90	WR - 90	8.20 - 12.40	1.75	1.75	3.25	3.25
RT102	WR - 102	7.00 - 11.00	2.00	2.00	3.75	3.75
RT112	WR - 112	7.05 - 10.00	2.00	2.00	3.75	3.75
RT137	WR - 137	5.85 - 8.20	2.50	2.50	4.25	4.25
RT159	WR - 159	4.90 - 7.05	3.00	3.00	5.00	5.00
RT187	WR - 187	3.95 - 5.85	4.00	4.00	6.00	6.00
RT229	WR - 229	3.30 - 4.90	5.00	5.00	7.50	7.50
RT284	WR - 284	2.60 - 3.95	6.00	6.00	9.50	9.50
RT284 R/H	WR - 284 R/H	2.60 - 3.95	6.00	–	9.50	–
RT340	WR - 340	2.20 - 3.30	10.00	–	14.76	–
RT430	WR - 430	1.70 - 2.60	12.00	–	17.26	–

Rectangular Straight Waveguides

Frontgrade’s Straight Waveguides with flanges are offered for waveguide sizes WR-22 to WR-430. VSWR is less than 1.06 typical over the full
waveguide bandwidth while insertion loss is equivalent to waveguide tubing per MIL-W-85.

Model Number	Waveguide Size	Frequency Range (GHz)	Materials
RS22	WR - 22	33.00 - 50.00	Copper
RS28	WR - 28	26.50 - 40.00	Aluminum/Copper
RS34	WR - 34	22.00 - 33.00	Aluminum/Copper
RS42	WR - 42	18.00 - 26.50	Aluminum/Copper
RS51	WR - 51	15.00 - 22.00	Aluminum/Copper
RS62	WR - 62	12.40 - 18.00	Aluminum/Copper
RS75	WR - 75	10.00 - 15.00	Aluminum/Copper
RS90	WR - 90	8.20 - 12.40	Aluminum/Copper
RS102	WR - 102	7.00 - 11.00	Aluminum/Copper
RS112	WR - 112	7.05 - 10.00	Aluminum/Copper
RS137	WR - 137	5.85 - 8.20	Aluminum/Copper
RS159	WR - 159	4.90 - 7.05	Aluminum/Copper
RS187	WR - 187	3.95 - 5.85	Aluminum/Copper
RS229	WR - 229	3.30 - 4.90	Aluminum/Copper
RS284	WR - 284	2.60 - 3.95	Aluminum/Copper
RS284 R/H	WR - 284 R/H	2.60 - 3.95	Aluminum
RS340	WR - 340	2.20 - 3.30	Aluminum/Copper
RS430	WR - 430	1.70 - 2.60	Aluminum/Copper

Rectangular Transition Waveguides

Frontgrade's Transition Waveguides with flanges are offered for waveguide sizes WR-22 to WR-430 are designed to interconnect different size waveguide components in a minimum space while maintaining a VSWR of 1.10 maximum in the overlap frequency bands. Additional sizes, extended range, and custom design configurations are available on request.

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