Waveguide Accessories
With the world’s largest portfolio of waveguides and supporting waveguide components, Frontgrade manufactures a wide range of drain units for your designs.
Designed with our leading waveguide development expertise and application knowledge, Frontgrade Waveguide accessories are offered in a variety of options, sizing and materials.
Contact us today to learn how we can assist with your designs!
Bulkhead Feedthroughs
Frontgrade Bulkhead Feedthroughs are available for both rectangular and double ridge waveguides.
For rectangular waveguides, our bulkhead units cover sizes WR-22 to WR-187 and sizes WRD-180 thru WRD-475 for double ridge waveguides. Assemblies include hardware and silicone rubber bulkhead gasket for mounting purposes and feature a VSWR of less than 1.10.
Rectangular Bulkhead Feedthroughs
| Model Number | Waveguide Size | Frequency <br/>Range (GHz) | Inside Bend Radius - <br/>Aluminum | Inside Bend Radius - <br/>Copper | Dimensions A or B (Min) - <br/>Aluminum | Dimensions A or B (Min) - <br/>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 | – |
Double Ridge Bulkhead Feedthroughs
| Model Number | Waveguide Size | Frequency <br/>Range (GHz) | Dimension A | DimensionsB | Dimensions CØ | Dimensions DØ |
|---|---|---|---|---|---|---|
| BFU22 | WR - 22 | 33.00 - 50.00 | 3.00 | 1.00 | 2.00 | 2.50 |
| BFU28 | WR - 28 | 26.50 - 40.00 | 3.00 | 1.00 | 2.50 | 3.00 |
| BFU34 | WR - 34 | 22.00 - 33.00 | 3.00 | 1.00 | 2.50 | 3.00 |
| BFU42 | WR - 42 | 18.00 - 26.50 | 3.00 | 1.00 | 2.50 | 3.00 |
| BFU51 | WR - 51 | 15.00 - 22.00 | 3.00 | 1.00 | 2.63 | 3.25 |
| BFU62 | WR - 62 | 12.40 - 18.00 | 3.00 | 1.00 | 2.63 | 3.25 |
| BFU75 | WR - 75 | 10.00 - 15.00 | 3.75 | 1.38 | 2.88 | 3.50 |
| BFU90 | WR - 90 | 8.20 - 12.40 | 3.75 | 1.38 | 2.88 | 3.50 |
| BFU102 | WR - 102 | 7.00 - 11.0 | 0 4.2 | 5 1.6 | 3 3.2 | 5 4.00 |
| BFU112 | WR - 112 | 7.05 - 10.0 | 0 4.2 | 5 1.6 | 3 3.2 | 5 4.00 |
| BFU137 | WR - 137 | 5.85 - 8.20 | 4.25 | 1.63 | 4.00 | 4.75 |
| BFU159 | WR - 159 | 4.90 - 7.05 | 4.25 | 1.63 | 5.25 | 6.00 |
| BFU187 | WR - 187 | 3.95 - 5.85 | 4.25 | 1.63 | 5.25 | 6.00 |
Drain Units
Frontgrade manufactures a wide range of drain units for your designs.
Frontgrade Drain Units are offered for both rectangular and double ridge waveguide designs.
Our rectangular waveguide drain units are constructed using a combination of all clear or all tapped, aluminum or brass, cover or groove type flanges and covering the waveguide sizes WR-28 to WR-187. VSWR is less than 1.10. Frontgrade’s double ridge waveguide drain units utilize a combined construction of all clear or all tapped, cover or gasket type aluminum flanges and support waveguide sizes WRD-180 through WRD-475. VSWR is less than 1.10.
Contact us today to learn how Frontgrade Drain Units can meet your design needs!
Filters, Diplexers & Multiplexers
Frontgrade offers a comprehensive line of filters, diplexers and multiplexers from 400 MHz to 60 GHz.
Frontgrade's broad range of custom waveguide and coaxial designs are available offering extreme temperature stability and low insertion loss for data links, military satellite communications, missiles, and radar.
Our portfolio includes coaxial filters; high power low passive intermodulation (PIM) diplexers; high frequency diplexers; switchable multiplexers and waveguide filters.
Contact us to see how we can assist with your designs!
Flanges
No matter your waveguide size, shape or design or application, Frontgrade has a flange to meet your design needs.
Designed with our leading waveguide development expertise and application knowledge, Frontgrade Flanges are offered in a variety offers a solutions and deliver minimal insertion loss when joining waveguide sections. For rectangular waveguides, we provide flanges for sizes W22 through WR430 and in cover, choke, or grooved configurations. Frontgrade also offers a standard product line of double-ridge waveguide flanges for the waveguide sizes WRD180 through WRD250 per Mil-W-23351. These flanges are available in aluminum and are provided in either cover or gasket configurations. Alternate materials and configurations are available on request.
Contact us today to learn how we can assist with your designs!
Gaskets
Frontgrade has an extensive range of waveguide gaskets across sizes, designs, and applications.
Designed with our leading waveguide development expertise and application knowledge, Frontgrade Waveguide Gaskets are offered in a variety of options, sizing and materials.
Our standard gaskets are made to fit CPR, UG and CMR flanges, and we can also produce other forms to fit other flange designs. These gaskets can be supplied either molded or die cut in a wide range of compounds. Frontgrade stocks a wide variety of fluorosilicone and conductive silicone rectangular waveguide UG and CPR style gaskets. In addition, Frontgrade supplies a series of conductive silicone double ridge waveguide grooved-flange gaskets. These gaskets are manufactured from a silver impregnated silicone fluorolastomer compound.
Contact us today to learn how we can assist with your designs!
Power Samplers
Frontgrade manufactures a wide range of waveguide power samplers for your designs.
Frontgrade Power Samplers deliver an efficient and economical way for monitoring power in matched waveguide systems where high directivity is not a concern. Offered for both rectangular and double ridge waveguide system designs, our power samplers deliver main line VSWR of 1.10 maximum and standard couples values are available from 30 to 60 dB with coupling flatness maintained ±1.0 dB.
Contact us today to learn how Frontgrade Power Samplers can meet your design needs!
Pressure Drain Units
Frontgrade offers a variety of pressure drain units for your designs. Frontgrade Pressure Drain Units are offered for both rectangular and double ridge waveguide designs.
We offer a standard product line of rectangular waveguide pressure drain units constructed using a combination of all clear or all tapped, aluminum or brass, cover or groove type flanges. They support waveguide sizes WR-28 to WR-187 and VSWR is less than 1.10.
For double-ridge waveguide designs, Frontgrade offers pressure drain units constructed using a combination of all clear or all tapped, cover or gasket type aluminum flanges and covering the waveguide sizes WRD-180 thru WRD-475. VSWR is less than 1.10.
Contact us today to learn how Frontgrade Pressure Drain Units can meet your design needs!
Pressure Inlets
Frontgrade Pressure Inlets allow you to make the most of your waveguide designs.
Frontgrade Waveguide Pressure Inlets are offered for both rectangular and double ridge waveguide designs. For rectangular waveguide sizes WR-28 through WR-430, we offer a complete line of pressure inlets constructed using a combination of all clear or all tapped, aluminum or brass, cover or groove type flanges and covering sizes WR-28 to WR-187. VSWR is less than 1.10.pressure units with cover or gasket flanges. Frontgrade pressure units for double ridge waveguides are also constructed using a combination of all clear or all tapped, cover or gasket type aluminum flanges and support waveguide sizes WRD-180 through WRD-475. VSWR is less than 1.10.
Contact us today to learn how Frontgrade Pressure Inlets can meet your design needs!
Pressure Units
To support your waveguide systems, Frontgrade offers pressure units to protect and maintain the RF energy of your designs.
Frontgrade Pressure Units are offered for both rectangular and double ridge waveguide designs. For rectangular waveguide sizes WR-28 through WR-430, we offer a complete line of pressure units with cover or gasket flanges. VSWR is less than 1.10, gauge reads 30 psig maximum and a 60 psig gauge is available on request.
Pressure Windows
Frontgrade Waveguide Pressure Windows allow you to keep contaminants out of your systems and provide significant price and performance benefits.
Frontgrade offers a full range of waveguide pressure windows for rectangular and double ridge designs.
For rectangular waveguide pressure windows, we offer options such as standard, high power quartz and high power boron nitride. Our standard rectangular waveguide pressure windows are constructed using all clear holes, aluminum or brass, cover and groove type flanges captivating a high temperature kapton dielectric material. These units will withstand moderate SW power levels while maintaining 30 PSI pressure. VSWR is less than 1.10 typical (1.20 typical for WR-22). Frontgrade also offers high power rectangular waveguide pressure windows in quartz dielectric material. These units will withstand high CW power levels while maintaining 15 PSI pressure. VSWR is less than 1.15 typical for most models. In addition, units designed specifically for vacuum applications are available upon request. We also offer these high power pressure windows in a high temperature boron dielectric material. These units withstand high CW power levels while maintaining 30 PSI pressure. VSWR is less than 1.20 typical for most models.
Frontgrade also offers a similar range of pressure windows for double ridge waveguides including standard and high power, boron nitride. They are constructed using all clear holes, cover and gasket type aluminum flanges captivating a high temperature kapton dielectric material. These units will withstand moderate CW power levels while maintaining 30 PSI pressure. Our high power pressure windows are constructed in a similar fashion, while captivating a high temperature boron dielectric material. These units will also withstand high CW power levels while maintaining 30 PSI pressure.
Contact us today to learn how Frontgrade Pressure Windows can meet your design needs!
Tubing
No matter your waveguide size, shape or design or application, Frontgrade has waveguide tubing including rigid, thin wall and flexible to meet your design needs
Designed with our leading waveguide development expertise and application knowledge, Frontgrade Tubing are offered in a variety of options, sizing and materials.
For rectangular waveguide designs, Frontgrade offers rigid waveguide tubing for 20 different waveguide sizes which meets MIL-DTL-85 specifications and in either copper or aluminum. In addition, thin wall rectangular waveguide tubing and completed assemblies for system applications is available where minimum weight without performance degradation is specified. All Frontgrade thin wall waveguide tubing can withstand 30 PSIG without performance compromise. Rigid tubing is available for nine different double ridge waveguide sizes and meets MIL-DTL-23351 specifications.
Frontgrade flexible waveguide tubing supports MIL-DTL-287, is pressure tight with no RF leakage. Our seamless corrugated flexible waveguide constructed of thin wall tubing convoluted using an unique hydraulic precision forming process.
Contact us today to learn how we can assist with your designs!
Frontgrade pressure units for double ridge waveguides support sizes WRD-180 through WRD-250. VSWR is less than 1.10. Gauge reads 30 psig maximum with a 60 psig gauge available.
Contact us today to learn how Frontgrade Pressure Units can meet your design needs!
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