Waveguide Pressure Windows |
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Waveguide Pressure Sealing Windows
ATM manufactures Waveguide Pressure Windows for rectangular waveguide and double ridge waveguide to keep contaminants out and provide an efficient seal at pressures as high as 70 psi. ATM pressure windows offer substantial price and performance advantages because of their manufacturing method and material content. Unlike conventional pressure windows, they are made from the highest quality, copper-clad, Teflon fiber glass or Vacuum tight material.
The compensated pressure window area is formed by precision photo-etching. The resulting material has excellent pressure sealing capability and withstands temperature from -40°C to +120°C and shock extremes of the order encountered in missile and aerospace applications. Standard rectangular waveguide window sizes WR28 through WR284, and double ridge waveguide window sizes WRD750 thru WRD200 are readily available. Performance characteristics are listed in the charts below.
Rectangular Waveguide Pressure Windows | ||||||||||
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WG Size | Freq. (GHz) | VSWR max |
Pwr (Watts) -CW |
Pwr (kW) -Peak |
Pres. (PSIG) |
Material | Standard Model No.* | Thick A** (In) |
Otln. | Typical Data |
WR340 | 2.20-3.30 | 1.06 | 1800 | 3500 | 15 |
Teflon Fiber Glass |
340-230-2-2 | 0.25 | ||
WR284 | 2.60-3.95 | 1.06 | 1300 | 2000 | 15 | 284-230-6-6 | 0.25 | |||
WR229 | 3.30-4.90 | 1.07 | 1300 | 1800 | 20 | 229-230-2-2 | 0.25 | |||
WR187 | 3.95-5.85 | 1.06 | 1300 | 1500 | 25 | 187-230-6-6 | 0.25 | |||
WR159 | 4.90-7.05 | 1.05 | 1200 | 1000 | 30 | 159-230-2-2 | 0.25 | |||
WR137 | 5.85-8.20 | 1.07 | 1000 | 750 | 35 | 137-230-2-2 | 0.25 | |||
WR112 | 7.05-10.0 | 1.10 | 1000 | 500 | 40 | 112-230-6-6 | 0.25 | |||
WR102 | 7.00-11.0 | 1.15 | 1000 | 400 | 40 | 102-230-6-6 | 0.25 | |||
WR90 | 8.20-12.4 | 1.10 | 900 | 300 | 40 | 90-230-6-6 | 0.16 | |||
WR75 | 10.0-15.0 | 1.09 | 800 | 200 | 40 | 75-230-6-6 | 0.20 | |||
WR62 | 12.4-18.0 | 1.08 | 700 | 150 | 40 | 62-230-6-6 | 0.19 | |||
WR51 | 15.0-22.0 | 40 | 51-230-6-6 | 0.19 | ||||||
WR42 | 18.0-26.5 | 1.12 | 400 | 75 | 40 | 42-230-6-6 | 0.15 | |||
WR34 | 22.0-33.0 | 1.15 | 400 | 60 | 40 | 34-230-6-6 | 0.15 | |||
WR28 | 26.5-40.0 | 1.18 | 250 | 45 | 40 | 28-230-6-6 | 0.10 | Insertion-Loss Return-Loss |
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* The Standard Model Numbers above are the most common parts ordered for size, material and flange. However, these models can easily be altered for your needs by using the Model # code system to the left. ** This dimension is based on the standard model number shown. Thickness may vary depending on flange type. See the ATM Standard Flange page for more info. For Window without flange assembly replace the flange type with a "W". |
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Please note: Rectangular waveguide windows are of Brass construction, standard. |
Rectangular Waveguide Vacuum Pressure Windows | ||||||||
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WG Size | Freq. (GHz) |
VSWR max |
Power (Watts) -CW |
Pressure (PSIG) |
Material | Standard Model No.* |
Thickness A** (In) |
Otln |
WR284 | 2.60 - 3.95 | 1.06 | 1300 | 25 | Vacuum Tight | 284-233-6-6 | 0.25 | |
WR229 | 3.30 - 4.90 | 1.07 | 1200 | 25 | 229-233-2-2 | 0.25 | ||
WR187 | 3.95 - 5.85 | 1.06 | 1200 | 25 | 187-233-6-6 | 0.25 | ||
WR159 | 4.90 - 7.05 | 1.05 | 700 | 25 | 159-233-2-2 | 0.25 | ||
WR137 | 5.85 - 8.20 | 1.07 | 500 | 25 | 137-233-2-2 | 0.25 | ||
WR112 | 7.05 - 10.0 | 1.10 | 400 | 25 | 112-233-6-6 | 0.25 | ||
WR102 | 7.00 - 11.0 | 1.15 | 400 | 25 | 102-233-6-6 | 0.25 | ||
WR90 | 8.20 - 12.4 | 1.10 | 400 | 25 | 90-233-6-6 | 0.16 | ||
WR75 | 10.0 - 15.0 | 1.09 | 375 | 25 | 75-233-6-6 | 0.20 | ||
WR62 | 12.4 - 18.0 | 1.08 | 375 | 25 | 62-233-6-6 | 0.19 | ||
WR51 | 15.0 - 22.0 | 1.12 | 350 | 25 | 51-233-6-6 | 0.19 | ||
WR42 | 18.0 - 26.5 | 1.12 | 320 | 25 | 42-233-6-6 | 0.15 | ||
WR34 | 22.0 - 33.0 | 1.15 | 250 | 25 | 34-233-6-6 | 0.15 | ||
WR28 | 26.5 - 40.0 | 1.18 | 100 | 25 | 28-233-6-6 | 0.10 |
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* The Standard Model Numbers above are the most common parts ordered for size, material and flange. However, these models can easily be altered for your needs by using the Model # code system to the left. ** This dimension is based on the standard model number shown. Thickness may vary depending on flange type. See the ATM Standard Flange page for more info. For Window without flange assembly replace the flange type with a "W". |
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Please note: Rectangular Waveguide Windows are of Brass construction, standard. |
Double Ridge Waveguide Pressure Windows | |||||||||
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WG Size | Freq. (GHz) | VSWR max |
RF Power*** | Pressure (PSIG) |
Material | Standard Model No.* |
Thick A** (In) |
Outline Dwgs |
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Avg. CW (Watts) |
Peak (kW) |
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WRD200 | 2.00 - 4.80 | 1.09 | 600 | 1 | 25 | Vacuum Tight | 200-233-C3-C3 | 0.25 | Dwg |
WRD250 | 2.50 - 7.80 | 1.09 | 600 | 1 | 25 | Vacuum Tight | 250-233-C3-C3 | 0.31 | Dwg |
WRD350 | 3.50 - 8.20 | 1.09 | 600 | 1 | 25 | Vacuum Tight | 350-233-C3-C3 | 0.25 | Dwg |
WRD475 | 4.75 - 11.0 | 1.09 | 600 | 1 | 25 | Vacuum Tight | 475-233-C3-C3 | 0.25 | Dwg |
WRD650 | 6.50 - 18.2 | 1.09 | 600 | 1 | 25 | Vacuum Tight | 650-233-C3-C3 | 0.25 | |
WRD750 | 7.50 - 18.0 | 1.09 | 600 | 1 | 25 | Vacuum Tight | 750-233-C3-C3 | 0.25 | |
WRD750 | 7.50 - 18.0 | 1.09 | 600 | 1 | 15 | Teflon/glass | 750-230-C3-C3 | 0.25 |
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* The Standard Model Numbers above are the most common parts ordered for size, material and flange. However, these models can easily be altered for your needs by using the Model # code system to the left. ** This dimension is based on the standard model number shown. Thickness may vary depending on flange type. See the ATM Standard Flange page for more info. *** Units tested up to 50,000 ft. altitude. For Window without flange assembly replace the flange type with a "W". |
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Please note: Double Ridge Waveguide Windows are of Brass construction, standard. |