Attenuators, Waveguide

Fixed Precision

   See Also:
W/G Attenuators, Fixed
W/G Attenuators, HP Fixed Precision
W/G Attenuators, Variable
Coax Attenuators, Fixed
Coax Attenuators, Variable

ATM offers a series of rectangular waveguide precision attenuators covering the waveguide sizes WR28 through WR430 and attenuation values of 10dB, 20dB, 30dB, 40dB and 50dB.   The assembly construction includes a precision element for optimum electrical performance, but note that Attenuation vs. Frequency can vary greatly depending on the attenuation at a given frequency.  For more information feel free to call us and discuss your needs with one of our design engineers.

GENERAL SPECIFICATIONS ( All Options )

Electrical

Std. Attenuation values: 10, 20, 30, 40, 50dB

Nominal Attenuation accuracy: +/- 0.50dB

(+/- 0.75dB for WR42, WR34, WR28)

Freq. Sensitivity: +/- 0.60 dB

(+/- 0.75dB for WR42, WR34, WR28)

Applicable Mil-Specs

General:

Product Specific:

Mechanical

Size: See Tables

Body: Aluminum/Copper Brass

Finish: Unique corrosion resistant 316 stainless steel epoxy coating IAW MIL-F-14072

Waveguide Fixed Precision Attenuators
WG Size Freq GHz Power
Watts		 VSWR Standard
Model No.*		 Dimensions
Length (L)
Inches		 Offset (O)
Inches
WR430 1.70 - 2.60 15 1.08 430-630A-dB-2-2 54.0 2.230
WR340 2.20 - 3.30 12 1.08 340-630A-dB-2-2 42.0 1.780
WR284 2.60 - 3.95 10 1.08 284-630A-dB-6-6 33.0 1.420
WR229 3.30 - 4.90 10 1.08 229-630A-dB-2-2 27.0 1.209
WR187 3.95 - 5.85 8 1.08 187-630A-dB-6-6 24.0 0.936
WR159 4.9 - 7.05 7 1.08 159-630A-dB-2-2 24.0 0.859
WR137 5.95 - 8.20 6 1.08 137-630A-dB-2-2 18.5 0.814
WR112 7.05 - 10.0 4 1.08 112-630A-dB-6-6 16.0 0.561
WR90 8.20 - 12.4 4 1.08 90-630A-dB-6-6 14.5 0.450
WR75 10.0 - 15.0 2 1.08 75-630A-dB-6-6 13.5 0.425
WR62 12.4 - 18.0 1.5 1.08 62-630A-dB-6-6 11.5 0.351
WR51 15.0 - 22.0 1.0 1.08 51-630A-dB-6-6 11.5 0.295
WR42 18.0 - 26.5 0.5 1.08 42-630A-dB-6-6 9.5 0.210
WR34 22.0 - 33.0 0.5 1.08 34-630A-dB-6-6 9.5 0.210
WR28 26.5 - 40.0 0.5 1.08 28-630A-dB-6-6 9.0 0.180
*Insert desired attenuation value (10, 20, 30, 40, or  50dB) in the model number where dB is listed
The Model numbers listed above are the most common model numbers for size, material, flanges, and calibration, however, these models can easily be altered to accommodate customer needs by following the Model # code system below.  In addition the customer must choose the attenuation value appropriate for application (10dB, 20dB, 30dB, 40dB, or 50dB) and insert it in the model number where dB is listed.

 

Ordering Information

                      Typical Part #:         WGSize- 630 Material- dB value-  Flange1- Flange2
           

Example P/N: 284-630A-20-6-6 is:
 WR284 precision attenuator - Alum. Material - 20dB Atten - Cover Flg. - Cover Flg.

See Atm Standard Flange page for more info.

 

 

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