Waveguide Couplers,

Short Length, High Directivity

   See Also:
W/G Couplers, Crossguide Directional
W/G Couplers, Loop
W/G Couplers, Multi-hole Directional
W/G Couplers, 90° Hybrid 3dB Directional
Coax Couplers, Directional

ATM's Short Length High Directivity product line finds particular use in applications requiring short insertion length with high directivity.  They are typically used to replace Crossguide Couplers where directivity can be marginal and short length still important.  Typical nominal coupling variation is of +/-0.5dB and flatness of +/-0.75dB are obtained by carefully controlled machining patterns.  Please call us and discuss your needs with one of our design engineers.

 

         Short Length, High Directivity Couplers - Single

GENERAL SPECIFICATIONS

Electrical
VSWR: 1.05 Primary arm
1.25 Secondary arm (1.40 for WR28, WR34, WR42)
Std. coupling values: 30, 40, 50dB*
 *Other coupling values available, but length of unit may change.
Coupling Accuracy: +/- 0.5dB
Frequency Sensitivity: +/- 0.5dB
Directivity: 25dB min, 30dB typical
Flatness: +/- 0.75dB
Mechanical
Body: Aluminum
Flanges: Multiple types available* - see ATM Std. Flanges
*Choosing a non-standard flange type may change length.
Connectors: Stainless Steel
Operation Temp:
Finish: Unique corrosion resistant 316 stainless steel epoxy coating IAW MIL-F-14072
Applicable Mil-Specs
General:
Product Specific:
Standard Models
WG Size Freq. (GHz)** Standard
Model No.		 Length
(Inches)

Outline

Dwg.
WR430 1.82 - 2.18 430-331A-dB-2-2 26.00  
WR340 2.78 - 3.22 340-331A-dB-2-2 19.00  
WR284 2.90 - 3.10 284-331A-dB-6-6 16.00  
WR229 3.60 - 4.30 229-331A-dB-2-2 14.00  
WR187 4.00 - 4.50 187-331A-dB-6-6 12.00  
WR159 5.80 - 6.50 159-331A-dB-2-2 9.00  
WR137 5.80 - 6.50 137-331A-dB-2-2 7.00  
WR137 7.20 - 7.80 137-332A-dB-2-2 7.00  
WR137 7.90 - 8.40 137-333A-dB-2-2 7.00  
WR112 7.20 - 7.80 112-332A-dB-6-6 5.50  
WR112 8.50 - 9.50 112-331A-dB-6-6 5.50  
WR102 8.20 - 9.80 102-331A-dB-6-6 4.75  
WR90 8.16 - 9.84 90-331A-dB-6-6 4.00 Dwg
WR75 10.7 - 12.7 75-331A-dB-6-6 3.00 Dwg
WR75 13.5 - 14.5 75-332A-dB-6-6 3.00 Dwg
WR62 15.0 - 18.0 62-331A-dB-6-6 3.00 Dwg
WR51 18.2 - 21.0 51-331A-dB-6-6 3.00  
WR42 17.7 - 21.0 42-331A-dB-6-6 3.00 Dwg
WR34 27.8 - 32.2 34-331A-dB-6-6 2.75  
WR28 27.3 - 32.7 28-331A-dB-6-6 2.50 Dwg
WR28 36.0 - 40.0 28-332A-dB-6-6 2.50 Dwg
**These units are designed for approximately 40% bandwidth, consult factory for other specifications
Ordering Information WR - Mod M -dB - F1 - F2
W/G Coupler, SLHD            

Example part number: 

112 -331 A -30F -6 -6
Waveguide Size: (WR)
WR28 thru WR284 available		          
Basic Model No.: (-Mod)        
Material (M): A=Aluminum, B=Copper/Brass    
Coupling (-dB) 30, 40, or 50dB std.    
Flange 1 (-F1): 1=CPRG, 2=CPRF, 6=Cover, 8=Seal Groove  
Flange 2 (-F2): 1=CPRG, 2=CPRF, 6=Cover, 8=Seal 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.

 

 

         Short Length, High Directivity Couplers - Dual

GENERAL SPECIFICATIONS

Electrical
VSWR: 1.05 Primary arm
1.25 Secondary arm (1.40 for WR28, WR34, WR42)
Std. coupling values: 30, 40, 50dB*
 *Other coupling values available, but length of unit may change.
Coupling Accuracy: +/- 0.5dB
Frequency Sensitivity: +/- 0.5dB
Directivity: 25dB min, 30dB typical
Flatness: +/- 0.75dB
Mechanical
Body: Aluminum
Flanges: Multiple types available* - see ATM Std. Flanges
*Choosing a non-standard flange type may change length.
Connectors: Stainless Steel
Operation Temp:
Finish: Unique corrosion resistant 316 stainless steel epoxy coating IAW MIL-F-14072
Applicable Mil-Specs
General:
Product Specific:
Standard Models
WG Size Freq. (GHz)** Standard
Model No.		 Length
(Inches)		 Outline

Dwg.
WR137 5.80 - 6.50 137-331DA-dBF-dBR-2-2 11.63  
WR137 7.20 - 7.80 137-332DA-dBF-dBR-2-2 11.63  
WR137 7.90 - 8.40 137-333DA-dBF-dBR-2-2 11.63  
WR112 8.50 - 9.50 112-331DA-dBF-dBR-6-6    
WR102 8.20 - 9.80 102-331DA-dBF-dBR-6-6    
WR90 8.16 - 9.84 90-331DA-dBF-dBR-6-6 7.00 Dwg
WR75 13.5 - 14.5 75-331DA-dBF-dBR-6-6    
WR62 15.0 - 18.0 62-331DA-dBF-dBR-6-6 5.63  
WR51 18.2 - 21.0 51-331DA-dBF-dBR-6-6 5.00 Dwg
WR51 15.0 - 17.5 51-332DA-dBF-dBR-6-6 5.00 Dwg
WR42 17.7 - 21.0 42-331DA-dBF-dBR-6-6    
WR34 27.8 - 32.2 34-331DA-dBF-dBR-6-6    
WR28 27.3 - 32.7 28-331DA-dBF-dBR-6-6    
WR28 36.0 - 40.0 28-332DA-dBF-dBR-6-6    
**These units are designed for approximately 40% bandwidth, consult factory for other specifications
Ordering Information WR - Mod M -dBF - dBR - F1 - F2
W/G Coupler, SLHD, Dual              

Example part number: 

75 -331D A -30F -40R -6 -6
Waveguide Size: (WR)
WR28 thru WR284 available		            
Basic Model No.: (-Mod)          
Material (M): A=Aluminum, B=Copper/Brass      
Fwd. Coupling (-dBF) 30, 40, or 50dB std.      
Rev. Coupling (-dBR) 30, 40, or 50dB std.      
Flange 1 (-F1): 1=CPRG, 2=CPRF, 6=Cover, 8=Seal Groove  
Flange 2 (-F2): 1=CPRG, 2=CPRF, 6=Cover, 8=Seal 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.

 

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