Waveguide Termination / Dummy Load for RF

Terminations / Dummy Load For RF Ka-Band

ATM manufactures a tremendous selection of Short, Low, Medium, and High Power Terminations and Dummy Loads for RF Rectangular Waveguides that do not require Forced Air Cooling. 

These are specifically tuned for the Ka-Band application ranging from 18.3GHz to 20.2GHz for WR51 and WR42, and 27.5GHz to 31.0GHz for WR34 and WR28.  Please call us and discuss your needs with one of our design engineers.

 

 Rectangular Waveguide Termination, Low Power Small - 710 Series
Ka-Band, Downlink 18.3 - 20.2 GHz, Uplink 27.5 - 31.0 GHz
  • Units pressure tested to 10 PSI.
  • Finish is a unique corrosion-resistant 316 stainless steel epoxy coating.
  • Series 710 Waveguide Terminations use Medium Power Elements to achieve low VSWR and stable electrical characteristics.
Waveguide Termination - 710 Series

Waveguide Termination - 710 Series
Waveguide Terminations - 710 Series Diagram

Waveguide Terminations - 710 Series Diagram
WG Size Freq. (GHz) Avg. Power
(Watts)		 VSWR max Standard
Model No.*		 Dim A.
(Inches)
WR51 18.3 - 20.2 10 1.10 51Ka-710B-6 1.00
WR42 18.3 - 20.2 10 1.15 42Ka-710A-6 1.00
WR34 27.5 - 31.0 5 1.15 34Ka-710A-6 0.75
WR28 27.5 - 31.0 5 1.15 28Ka-710A-6 0.75
Ordering Information
Low Power Waveguide Termination
 WR -Mod M -F
Example part number:  42ka -710 A -6
Waveguide Size: (WR)
WR28 thru WR51 available (Ka-Band)		      
Basic Model No.: (-Mod)    
Material (M): A=Aluminum, B=Brass
  
Flange (-F): 6=Cover, 7=Choke, 8=Cover/Groove
See ATM Standard Flange page for more info.
  

* The Standard Model Numbers above are the most common parts ordered for size, material and flange. However, these models can easily be altered to accommodate your needs by using the Model # code system to the left.

 

 Rectangular Waveguide Termination, Low Power - 720 Series
Ka-Band, Downlink 18.3 - 20.2 GHz, Uplink 27.5 - 31.0 GHz
  • Units pressure tested to 10 PSI.
  • Finish is a unique corrosion-resistant 316 stainless steel epoxy coating.
  • Low outgassing characteristics.
  • VSWR: See table below.
  • Series 720 Waveguide Terminations utilize a precision conical element  to achieve very low VSWR
Low Power Waveguide Termination - 720 Series

Low Power Waveguide Termination - 720 Series
Low Power Waveguide Termination -720 Series Diagram

Low Power Waveguide Termination -720 Series Diagram
WG Size Freq. (GHz) VSWR
max		 Avg. Power
(Watts)		 Peak Power
(kW)		 Standard
Model No.*		 Dim A.
(Inches)
WR51 18.3 - 20.2 1.01 1.0 1.0 51Ka-720B-6 4.00
WR42 18.3 - 20.2 1.01 0.5 0.5 42Ka-720A-6 2.50
WR34 27.5 - 31.0 1.01 0.5 0.5 34Ka-720A-6 2.50
WR28 27.5 - 31.0 1.02 0.5 0.5 28Ka-720A-6 2.00
Ordering Information
Low Power Waveguide Termination
 WR -Mod M -F
Example part number:  42ka -720 A -6
Waveguide Size: (WR)
WR28 thru WR51 available (Ka-Band)		      
Basic Model No.: (-Mod)    
Material (M): A=Aluminum, B=Brass
  
Flange (-F): 6=Cover, 7=Choke, 8=Cover/Groove
See ATM Standard Flange page for more info.
  

* The Standard Model Numbers above are the most common parts ordered for size, material and flange. However, these models can easily be altered to accommodate your needs by using the Model # code system to the left.

 

 Rectangular Waveguide Termination, Medium Power - 740 Series
Ka-Band, Downlink 18.3 - 20.2 GHz, Uplink 27.5 - 31.0 GHz
  • Units pressure tested to 10 PSI.
  • Finish: Hi-Temp  black paint.
  • Low outgassing characteristics.
  • ATM Series 740 Waveguide Terminations utilize High Power Ceramic Elements fired at 1300° C to to achieve low VSWR and stable electrical characteristics.
  • Units are best mounted in the horizontal plane with free air flow.  The load temperature will vary depending on power levels and duration.  If during use the surface temperature approaches 260° at the hottest point, (normally where the first fin touches the waveguide body), forced air cooling should be used to prevent damage to the internal load element.  Units can survive temperatures as high as 450° C without damage for a short time.
Medium Power Waveguide Termination - 740 Series

Medium Power Waveguide Termination - 740 Series
Low Power Waveguide Termination -740 Series Diagram

Low Power Waveguide Termination -740 Series Diagram
WG Size Freq. (GHz) VSWR
max		 Avg. Power
(Watts)		 Peak Power
(kW)		 Standard
Model No.*		 Dim A.
(Inches)
WR51 18.3 - 20.2 1.10 100 120 51Ka-740A-6 3.25
WR42 18.3 - 20.2 1.15 100 120 42Ka-740B-6 3.50
WR34 27.5 - 31.0 1.15 75 80 34Ka-740B-6 3.25
WR28 27.5 - 31.0 1.15 75 50 28Ka-740B-6 4.00
Ordering Information
Medium Power Waveguide Termination
 WR -Mod M -F
Example part number:  42ka -740 B -6
Waveguide Size: (WR)
WR28 thru WR51 available (Ka-Band)		      
Basic Model No.: (-Mod)    
Material (M): A=Aluminum, B=Brass
  
Flange (-F): 6=Cover, 7=Choke, 8=Cover/Groove
See ATM Standard Flange page for more info.
  

* The Standard Model Numbers above are the most common parts ordered for size, material and flange. However, these models can easily be altered to accommodate your needs by using the Model # code system to the left.

 

 Rectangular Waveguide Termination, High Power - 745 Series
Ka-Band, Downlink 18.3 - 20.2 GHz, Uplink 27.5 - 31.0 GHz
  • Units pressure tested to 10 PSI.
  • Low outgassing characteristics.
  • VSWR: 1.15 max.
  • ATM Series 745 Waveguide Terminations utilize High Power Ceramic Elements fired at 1300° C to to achieve low VSWR and stable electrical characteristics.
  • All series 745 Terminations are manufactured from 6061 Aluminum.
  • Finish: Hi-Temp  black paint.
  • Units are best mounted in the horizontal plane with free air flow.  The load temperature will vary depending on power levels and duration.  If during use the surface temperature approaches 260° at the hottest point, (normally where the first fin touches the waveguide body), forced air cooling should be used to prevent damage to the internal load element.  Units can survive temperatures as high as 450° C without damage for a short time.
High Power Waveguide Termination - 745 Series

High Power Waveguide Termination - 745 Series
High Power Waveguide Terminations - 745 Series Diagram

High Power Waveguide Terminations - 745 Series Diagram
WG Size Freq. (GHz) VSWR
max		 Avg. Power
(Watts)		 Peak Power
(kW)		 Standard
Model No.*		 Dim A.
(Inches)		 Dim B.
(Inches)		 Dim C.
(Inches)
WR51 18.3 - 20.2 1.15 220 120 51Ka-745-6 4.13 2.25 2.25
WR51 18.3 - 20.2 1.15 260 120 51Ka-745A-6 4.50 3.00 3.00
WR42 18.3 - 20.2 1.15 230 120 42Ka-745-6 4.50 2.25 2.25
WR34 27.5 - 31.0 1.15 150 80 34Ka-745-6 4.00 2.00 2.00
WR28 27.5 - 31.0 1.15 125 50 28Ka-745-6 4.00 2.00 2.00
Ordering Information
High Power Waveguide Termination
 WR -Mod -F
Example part number:  42ka -745 -6
Waveguide Size: (WR)
WR28 thru WR51 available (Ka-Band)		    
Basic Model No.: (-Mod)  
Flange (-F): 6=Cover, 7=Choke, 8=Cover/Groove
See ATM Standard Flange page for more info.

* The Standard Model Numbers above are the most common parts ordered for size, material and flange. However, these models can easily be altered to accommodate your needs by using the Model # code system to the left.

Note: All 745 Terminations are aluminum construction only.

 

 Rectangular Waveguide Termination, Very High Power - 760/780 Series
Ka-Band, Downlink 18.3 - 20.2 GHz, Uplink 27.5 - 31.0 GHz
  • Units may be pressure tested to 10 PSI upon request.
  • Finish: Hi-Temp black paint.
  • Low outgassing characteristics.
  • VSWR: 1.15 max.
  • ATM Series 760 Waveguide Terminations utilize High Power Ceramic Elements fired at 1300° C to to achieve low VSWR and stable electrical characteristics.
  • All series 760 Terminations are manufactured from 6061 Aluminum.
  • Units are best mounted in the horizontal plane with free air flow.  The load temperature will vary depending on power levels and duration.  If during use the surface temperature approaches 260° at the hottest point, (normally where the first fin touches the waveguide body), forced air cooling should be used to prevent damage to the internal load element.  Units can survive temperatures as high as 450° C without damage for a short time.
Rectangular Waveguide Termination - Very High Power 760/780 Series

Rectangular Waveguide Termination - Very High Power 760/780 Series
High Power Waveguide Terminations - 745 Series Diagram

High Power Waveguide Terminations - 745 Series Diagram
WG Size Freq. (GHz) VSWR
max		 Avg. Power
(Watts)		 Peak Power
(kW)		 Standard
Model No.*		 Dim A.
(Inches)		 Dim B.
(Inches)		 Dim C.
(Inches)
WR51 18.3 - 20.2 1.15 775 150 51Ka-760-6 7.75 4.50 4.50
WR42 18.3 - 20.2 1.15 600 120 42Ka-760-6 5.50 2.25 2.25
WR34 27.5 - 31.0 1.15 500 100 34Ka-760-6 6.37 2.25 2.25
WR28 27.5 - 31.0 1.15 200 100 28Ka-760-6 6.56 2.25 2.25
WR28 27.5 - 31.0 1.15 500 100 28Ka-780-6 7.00 2.50 2.50
Ordering Information
High Power Waveguide Termination
 WR -Mod -F
Example part number:  34ka -760 -6
Waveguide Size: (WR)
WR28 thru WR51 available (Ka-Band)		    
Basic Model No.: (-Mod)  
Flange (-F): 6=Cover, 7=Choke, 8=Cover/Groove
See ATM Standard Flange page for more info.

* The Standard Model Numbers above are the most common parts ordered for size, material and flange. However, these models can easily be altered to accommodate your needs by using the Model # code system to the left.

Note: All 760 Terminations are aluminum construction only.