Adapters,

Waveguide to Coax, Right Angle

  

See Also:
Adapters, W/G to Coax, Endlaunch
Adapters, W/G to W/G
Standard W/G Tolerances

ATM manufactures Waveguide to Coax Adapters covering a full frequency range for Rectangular Waveguides and Double Ridge Waveguides, with multiple flange and Coaxial connector types and configurations available.  For more information feel free to call us and discuss your needs with one of our design engineers.

  • Full Waveguide Frequency Range

  • Multiple Flange Types available

  • Other connectors such as SMA (M), Type N (M), SC, TNC, and 7/16 available.  Consult factory for details.

GENERAL SPECIFICATIONS -
RECTANGULAR W/G TO COAX ADAPTERS

Electrical
VSWR:
Standard Models:  1.25 Max
Precision Models:  1.15 Max
RF Connectors: K-Type, SMA, Type-N, SC, TNC, and 7/16" available
Mechanical
Body: Aluminum/Copper-Brass (per order)
Flanges: Multiple types available - see ATM Std. Flanges

Operation Temp:
Finish: Unique corrosion resistant 316 stainless steel epoxy coating IAW MIL-F-14072
Applicable Mil-Specs
General:
Product Specific:
Options
Pressure seal Units: Units sealed to hold 10 psi.  Add "/PT" to model number.
example: P/N 650-251A-2 sealed becomes: 650-251A-2/PT

 


W/G - Coax (SMA, Type-K, & 2.4mm) Adapters
Standard Full Band Models
WG Size Freq (GHz) Model No.* Coax
Connector		 VSWR
(Max.)		 Power
CW
(Watts)		 Peak
Power
(kW)		 Theoretical
I.L. (Max.)***		 Outline
Drawing
WR650 1.12 - 1.70 650-251A-2 SMA-female 1.25 50 3 0.12 Dwg
WR430 1.70 - 2.60 430-251A-2 SMA-female 1.25 50 3 0.13 Dwg
WR340 2.20 - 3.30 340-251A-2 SMA-female 1.25 50 3 0.14 Dwg
WR284 2.60 - 3.95 284-251A-6 SMA-female 1.25 50 3 0.15 Dwg
WR229 3.30 - 4.90 229-251B-2 SMA-female 1.25 50 3 0.16 Dwg
WR187 3.95 - 5.85 187-251A-6 SMA-female 1.25 50 3 0.17 Dwg
WR159 4.90 - 7.05 159-251B-2 SMA-female 1.25 50 3 0.18 Dwg
WR137 5.85 - 8.20 137-251B-2 SMA-female 1.25 50 3 0.20 Dwg
WR112 7.05 - 10.0 112-251B-6 SMA-female 1.25 50 3 0.21 Dwg
WR102 7.00 - 11.0 102-251A-6 SMA-female 1.25 50 3 0.22 Dwg
WR90 8.20 - 12.4 90-251A-6 SMA-female 1.25 50 3 0.23 Dwg
WR75 10.0 - 15.0 75-251A-6 SMA-female 1.25 50 3 0.25 Dwg
WR62 12.4 - 18.0 62-251A-6 SMA-female 1.25 50 3 0.27 Dwg
WR51 15.0 - 22.0 51-251B-6 SMA-female 1.25 50 3 0.29 Dwg
WR42 18.0 - 26.5 42-251A-6 SMA-female 1.25 50 3 0.32 Dwg
WR42 18.0 - 26.5 42-25KA-6 Type K-Female 1.25 50 3 0.32 Dwg
WR42 18.0 - 26.5 42-251ZA-6 SMA-female 1.20 50 3 0.32 Dwg
WR34 22.0 - 33.0 34-25KB-6 Type-K female (2.9mm) 1.25 10 3 0.35 Dwg
WR28 26.5 - 40.0 28-25KA-6 Type-K female (2.9mm) 1.25 10 3 0.39 Dwg
WR28 26.5 - 40.0 28-25KZA-6 Type-K female (2.9mm) 1.25 10 3 0.39 Dwg
WR22 33.0 - 40.0 22-25KA-6 Type-K female (2.9mm) 1.35 10 3 0.41 Dwg
WR22 33.0 - 50.0 22-252.4A-6 2.4mm-female 1.35 10 3 0.41 Dwg
New as of July 2012 Precision Low VSWR Models Full Band
W/G - Coax (SMA, Type-K, & 2.4mm) Adapters
WG Size Freq (GHz) Model No.* Coax
Connector		 VSWR
(Max.)		 Power
CW
(Watts)		 Peak
Power
(kW)		 Theoretical
I.L. (Max.)***		 Outline
Drawing
WR284 2.60 - 3.95 284-251PrA-6 SMA-female 1.15 50 3 0.15 Dwg
WR229 3.30 - 4.90 229-251PrB-2 SMA-female 1.15 50 3 0.16 Dwg
WR187 3.95 - 5.85 187-251PrA-6 SMA-female 1.15 50 3 0.17 Dwg
WR159 4.90 - 7.05 159-251PrB-2 SMA-female 1.15 50 3 0.18 Dwg
WR137 5.85 - 8.20 137-251PrB-2 SMA-female 1.15 50 3 0.20 Dwg
WR112 7.05 - 10.0 112-251PrB-6 SMA-female 1.15 50 3 0.21 Dwg
WR102 7.00 - 11.0 102-251PrA-6 SMA-female 1.15 50 3 0.22 Dwg
WR90 8.20 - 12.4 90-251PrA-6 SMA-female 1.15 50 3 0.23 Dwg
WR75 10.0 - 15.0 75-251PrA-6 SMA-female 1.15 50 3 0.25 Dwg
WR62 12.4 - 18.0 62-251PrA-6 SMA-female 1.15 50 3 0.27 Dwg
WR51 15.0 - 22.0 51-251PrB-6 SMA-female 1.15 50 3 0.29 Dwg
WR42 18.0 - 26.5 42-25KPrA-6 Type K-Female 1.15 50 3 0.32 Dwg
WR34 22.0 - 33.0 34-25KPrB-6 Type-K female (2.9mm) 1.15 10 3 0.35 Dwg
WR28 26.5 - 40.0 28-25KPrA-6 Type-K female (2.9mm) 1.15 10 3 0.39 Dwg
Ordering Information WR - Mod M - F
W/G - Coax Adapter, SMA        

Example part number: 

90 -251 A -6
Waveguide Size: (WR) WR28 thru WR650        
Basic Model No.: (-Mod)
Precision model: (-ModPr)		        
Material (M): A=Aluminum, B=Copper/Brass    
Flange (-F): 1=CPRG, 2=CPRF, 6=Cover, 7=Choke
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.

** All data given at 20° C and sea level.

 

***Insertion Loss for WG to coax adaptor is difficult to measure due to the very low loss and setup. The max I.L. figure quoted above is based on the theoretical losses due to connector, waveguide and reflection all taken at the highest Freq. and max value.

 


Type-N W/G - Coax Adapters
WG

Size

 Freq (GHz) Model No.* Power

CW

(Watts)

 Peak

Power

(kW)

High Power

Model No.

 Power

CW

(Watts)

 Peak

Power

(kW)

 Theoretical
I.L.

(Max.)**

 Outline
Drawing
WR975 0.75 - 1.12 975-253A-2 200 3 975-253HPA-2 500 5 0.09 Dwg
WR650 1.12 - 1.70 650-253A-2 200 3 650-253HPA-2 500 5 0.10 Dwg
WR510   510-253A-2     510-253HPA-2       Dwg
WR430 1.70 - 2.60 430-253A-2 200 3 430-253HPA-2 500 5 0.12 Dwg
WR340 2.20 - 3.30 340-253A-2 200 3 340-253HPA-2 500 5 0.12 Dwg
WR284 2.60 - 3.95 284-253A-6 200 3 284-253HPA-6 500 5 0.13 Dwg
WR229 3.30 - 4.90 229-253B-2 200 3 229-253HPB-2 500 5 0.14 Dwg
WR187 3.95 - 5.85 187-253A-6 200 3 187-253HPA-6 500 5 0.15 Dwg
WR159 4.90 - 7.05 159-253B-2 200 3 159-253HPB-2 500 5 0.16 Dwg
WR137 5.85 - 8.20 137-253B-2 200 3 137-253HPB-2 350 5 0.17 Dwg
WR112 7.05 - 10.0 112-253B-6 200 3 112-253HPB-6 350 5 0.18 Dwg
WR102 7.00 - 11.0 102-253A-6 200 3 102-253HPA-6 300 5 0.19 Dwg
WR90 8.20 - 12.4 90-253A-6 150 2 90-253HPA-6 300 5 0.21 Dwg
WR75 10.0 - 15.0 75-253A-6 150 2 75-253HPA-6 250 5 0.23 Dwg
WR62 12.4 - 18.0 62-253A-6 150 2 62-253HPA-6 250 5 0.25 Dwg
Ordering Information WR - Mod M - F
W/G - Coax Adapter, Type-N        

Example part number: 

90 -253 A -6
Waveguide Size: (WR) WR28 thru WR975        
Basic Model No.: (-Mod) 253=standard,
253HP=high power model		      
Material (M): A=Aluminum, B=Copper/Brass    
Flange (-F): 1=CPRG, 2=CPRF, 6=Cover, 7=Choke
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.

 

**Insertion Loss for WG to coax adaptor is difficult to measure due to the very low loss and setup. The max I.L. figure quoted above is based on the theoretical losses due to connector, waveguide and reflection all taken at the highest Freq. and max value.

 

 TNC W/G - Coax Adapters
WG Size Freq. (GHz) Model No.* Power

CW

(Watts)

 Peak

Power

(kW)

 Theoretical
I.L.

(Max.)**

Outline
Dwg.
WR650 1.12 - 1.70 650-255A-2 200 3 0.11 Dwg
WR430 1.70 - 2.60 430-255A-2 200 3 0.12 Dwg
WR340 2.20 - 3.30 340-255A-2 200 3 0.13 Dwg
WR284 2.60 - 3.95 284-255A-6 200 3 0.14 Dwg
WR229 3.30 - 4.90 229-255B-2 200 3 0.14 Dwg
WR187 3.95 - 5.85 187-255A-6 200 3 0.16 Dwg
WR159 4.90 - 7.05 159-255B-2 200 3 0.16 Dwg
WR137 5.85 - 8.20 137-255B-2 200 3 0.17 Dwg
WR112 7.05 - 10.0 112-255B-6 200 3 0.19 Dwg
WR102 7.00 - 11.0 102-255A-6 200 3 0.19 Dwg
WR90 8.20 - 12.4 90-255A-6 150 3 0.20 Dwg
WR75 10.0 - 15.0 75-255B-6 150 3 0.22 Dwg
WR62 12.4 - 18.0 62-255A-6 150 3 0.23 Dwg
WR51 15.0 - 18.0 51-255A-6 150 3 0.29 Dwg
Ordering Information WR - Mod M - F
W/G - Coax Adapter, TNC        

Example part number: 

112 -255 B -6
Waveguide Size: (WR) WR62 thru WR650        
Basic Model No.: (-Mod)      
Material (M): A=Aluminum, B=Copper/Brass    
Flange (-F): 1=CPRG, 2=CPRF, 6=Cover, 7=Choke
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.

 

**Insertion Loss for WG to coax adaptor is difficult to measure due to the very low loss and setup. The max I.L. figure quoted above is based on the theoretical losses due to connector, waveguide and reflection all taken at the highest Freq. and max value.

 

Type SC W/G - Coax Adapters
WG Size Freq. (GHz) Model No.* Power

CW

(Watts)

 Peak

Power

(kW)

 Theoretical
I.L.

(Max.)**

 Outline
Dwg.
WR650 1.12 - 1.70 650-258A-2 1600 3 0.11 Dwg
WR430 1.70 - 2.60 430-258A-2 1300 3 0.12 Dwg
WR340 2.20 - 3.30 340-258A-2 1100 3 0.13 Dwg
WR284 2.60 - 3.95 284-258A-6 975 3 0.14 Dwg
WR229 3.30 - 4.90 229-258B-2 850 3 0.14 Dwg
WR187 3.95 - 5.85 187-258A-6 780 3 0.16 Dwg
WR159 4.90 - 7.05 159-258B-2 700 3 0.16 Dwg
WR137 5.85 - 8.20 137-258B-2 650 3 0.17 Dwg
WR112 7.05 - 10.0 112-258B-6 575 3 0.19 Dwg
Ordering Information WR - Mod M - F
W/G - Coax Adapter, SC        

Example part number: 

112 -258 B -6
Waveguide Size: (WR) WR112 thru WR650        
Basic Model No.: (-Mod)      
Material (M): A=Aluminum, B=Copper/Brass    
Flange (-F): 1=CPRG, 2=CPRF, 6=Cover, 7=Choke
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.

 

**Insertion Loss for WG to coax adaptor is difficult to measure due to the very low loss and setup. The max I.L. figure quoted above is based on the theoretical losses due to connector, waveguide and reflection all taken at the highest Freq. and max value.

 

7/16" W/G - Coax Adapters
WG Size Freq. (GHz) Model No.*   Power

CW

(Watts)

 Peak

Power

(kW)

 Outline
Dwg.
WR650 1.12 - 1.70 650-259A-2 200 3 Dwg
WR430 1.70 - 2.60 430-259A-2 200 3 Dwg
WR340 2.20 - 3.30 340-259A-2 200 3 Dwg
WR284 2.60 - 3.95 284-259A-6 200 3 Dwg
WR229 3.30 - 4.90 229-259B-2 200 3 Dwg
WR187 3.95 - 5.85 187-259A-6 200 3 Dwg
WR159 4.90 - 7.05 159-259B-2 200 3 Dwg
WR137 5.85 - 8.20 137-259B-2 200 3 Dwg
Ordering Information WR - Mod M - F
W/G - Coax Adapter, 7-16"        

Example part number: 

137 -259 B -2
Waveguide Size: (WR) WR137 thru WR650        
Basic Model No.: (-Mod)      
Material (M): A=Aluminum, B=Copper/Brass    
Flange (-F): 1=CPRG, 2=CPRF,  6=Cover, 7=Choke
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.

 

 

 

  • Full Waveguide Frequency Range.

  • VSWR 1.25 or better typical on most models, low values available over narrow frequency.

  • Multiple Flange Types available.

  • Standard Connectors are SMA and Type-N.  Others such as TNC also available, consult factory for details.

  • Double Ridge W/G to Coax adapters are manufactured in aluminum only.

 

GENERAL SPECIFICATIONS -
DOUBLE RIDGE W/G TO COAX ADAPTERS
Electrical
VSWR: 1.25 Max
RF Connectors: SMA, Type-N,  standard. TNC available
Mechanical
Body: Aluminum
Flanges: Multiple types available - see ATM Std. Flanges
Connectors: Stainless Steel
Operation Temp:
Finish: Unique corrosion resistant 316 stainless steel epoxy coating IAW MIL-F-14072
Applicable Mil-Specs
General:
Product Specific:
Options
Pressure seal Units: Units sealed to hold 10 psi.  Add "/PT" to model number.
example: P/N 250-251-C3 sealed becomes: 250-251-C3/PT

FLANGE DESIGNATION & TYPE
DESIGNATION TYPE HOLES
- C1 COVER ALTERNATE TAP/THRU
- C2 ALL TAPPED
- C3 ALL THRU
- G1 GROOVE ALTERNATE TAP/THRU
- G2 ALL TAPPED
- G3 ALL THRU

 

SMA Double Ridge W/G - Coax Adapters
WG Size Freq (GHz) Model No.* VSWR
Max.		 Power
CW
(Watts)		 Peak
Power (kW)		 Outline
Dwg
New as of Nov 2012 WRD250 2.6 - 7.8 250-251-C3 1.35 50 3 .pdf
WRD350 3.5 - 8.2 350-251-C3 1.35 50 3  
WRD475 4.75 - 11.0 475-251-C3 1.25 50 3 .pdf
WRD580 5.8 - 16.0 580-251-C3 1.25 50 3 .pdf
WRD650 6.5 - 18.0 650-251-C3 1.25 50 3 .pdf
WRD750 7.5 - 18.0 750-251-C3 1.25 50 3 .pdf
WRD180 18.0 - 40.0 180-25K-C3** 1.50 10 3 .pdf
Ordering Information WRD - Mod - F
W/G - Coax Adapter, Double Ridge, SMA      

Example part number: 

580 -251 -C3
Waveguide Size: (WRD)
WRD250 thru WRD180 available		      
Basic Model No.: (-Mod)    
Flange (-F): See table above for quick reference, or
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.

** These units are supplied with 2.9mm (K-type) connectors only.

 

 

Type-N and TNC Double Ridge W/G - Coax Adapters
WG Size Freq (GHz) Type-N
Model No.*		 TNC
Model No.*		 VSWR
Max.		 Power
CW
(Watts)		 Peak
Power
(kW)		 Outline
Dwg.
WRD250 2.6 - 7.8 250-253-C3 250-255-C3 1.25 200 5 Dwg
WRD350 3.5 - 8.2 350-253-C3 350-255-C3 1.25 200 5  
WRD475 4.75 - 11.0 475-253-C3 475-255-C3 1.25 200 5 Dwg
WRD580 5.8 - 16.0 580-253-C3 580-255-C3 1.25 150 5 Dwg
WRD650 6.5 - 18.0 650-253-C3 650-255-C3 1.25 150 5 Dwg
WRD750 7.5 - 18.0 750-253-C3 750-255-C3 1.25 150 5 Dwg
Ordering Information WRD - Mod - F
W/G - Coax Adapter, Double-Ridge, Type-N      

Example part number: 

580 -253 -C3
Waveguide Size: (WRD)
 WRD250 thru WRD750 available		      
Basic Model No.: (-Mod) 253 Type-N, 255 TNC    
Flange (-F): See table above for quick reference
or 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.

 

 

 High Power Type-N Double Ridge W/G - Coax Adapters
WG Size Freq (GHz) High Power
Model No.*		 VSWR
Max.		 Power
CW
(Watts)		 Peak
Power
(kW)		 Outline
Dwg.
WRD250 2.6 - 7.8 250-253HP-C3 1.25 1000 5 Dwg
WRD475 4.75 - 11.0 475-253HP-C3 1.25 750 5 Dwg
WRD580 5.8 - 16.0 580-253HP-C3 1.25 500 5 Dwg
WRD650 6.5 - 18.0 650-253HP-C3 1.25 500 5 Dwg
WRD750 7.5 - 18.0 750-253HP-C3 1.25 500 5 Dwg
Ordering Information WRD - Mod - F
W/G - Coax Adapter, High Power, Double Ridge,Type-N      

Example part number: 

580 -253HP -C3
Waveguide Size: (WRD)
WRD250 thru WRD750 available		      
Basic Model No.: (-Mod)    
Flange (-F): See table above for quick reference
or 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.

 

 

 

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