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Short Length High Directivity

Short Length High Directivity Couplers For Ka-Band

Short High Directivity Waveguide Couplers

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 their directivity can be marginal and short length is still important. 

These units have coupling irises specifically designed for Ka-Band frequency ranges for the particular WG sizes.  Typical nominal coupling variation is of +/-0.5dB and flatness of +/-0.75dB are obtained by carefully controlled machining patterns. 

Pressure sealed Short Length, High Directivity Couplers are also available for microwave applications that require sealed systems. Please call us and discuss your needs with one of our design engineers.

Short Length High Directivity Couplers - Single
Ka-Band, Downlink 18.3 - 20.2GHz, Uplink 27.5 - 31.0GHz
Short Length, High Directivity Couplers For Ka-Band
Short Length, High Directivity Couplers For Ka-Band
 GENERAL SPECIFICATIONS
SLHD WAVEGUIDE COUPLERS

Electrical
VSWR: 1.05 Primary arm
1.30 Secondary arm for WR51
1.40 Secondary arm 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
Mechanical
Body: Aluminum
Flanges: Multiple types available* - see ATM Std. Flanges
*Choosing a non-standard flange type may change length.
Connectors: Stainless Steel
Finish: Unique corrosion resistant 316 stainless steel epoxy coating IAW MIL-F-14072
Options
Pressure Sealed Units: Add "/PT" to model number.
Example P/N: 34Ka-331A-30-6-6
Sealed P/N: 34Ka-331A-30-6-6/PT
Note: Pressure sealed units will hold 15 psi assuming all waveguide and coax ports are mated and sealed.
Single SLHD Waveguide Couplers
 WG Size Freq. (GHz) Standard
Model No.*		 Connector Length
Inches		 Outline
Drawing
 WR51 18.3 - 20.2 51ka-331A-dB-6-6  SMA F  3.00 Dwg
 WR42 18.3 - 20.2 42ka-331A-dB-6-6  SMA F  3.00 Dwg
 WR34 27.5 - 31.0 34ka-331A-dB-6-6  K F  2.75 Dwg
 WR28 27.5 - 31.0 28ka-331A-dB-6-6  K F  2.50 Dwg
Ordering Information
Waveguide Short Length, High Directivity Couplers (SLHD) for Ka-Band
 WR -Mod M -dB -F1 -F2
Example part number:  34ka -331 A -30F -6 -6
Waveguide Size: (WR)
WR28 thru WR51 available		          
Basic Model No.: (-Mod)        
Material (M): A=Aluminum      
Coupling (dB): 30 dB, 40 dB or 50 dB Coupling      
Flange 1 (-F1): 6=Cover, 8=Seal Groove
  
Flange 2 (-F2): 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.

Option: Add /PT to part number for pressure sealed unit to 15 psi.

 

Short Length High Directivity Couplers - Dual
Ka-Band, Downlink 18.3 - 20.2GHz, Uplink 27.5 - 31.0GHz
Short Length High Directivity Coupler - Dual
Short Length High Directivity Coupler - Dual
 GENERAL SPECIFICATIONS

Electrical
VSWR: 1.05 Primary arm
1.30 Secondary arm for WR51
1.40 Secondary arm 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
Mechanical
Body: Aluminum
Flanges: Multiple types available* - see ATM Std. Flanges
*Choosing a non-standard flange type may change length.
Connectors: Stainless Steel
Finish: Unique corrosion resistant 316 stainless steel epoxy coating IAW MIL-F-14072
Options
Pressure Seal Units: Units sealed to hold 10 psi.  Add "/PT" to model number
Example P/N 34Ka-331DA-30-6-6
Sealed becomes P/N 34Ka-331DA-30-6-6/PT
Dual SLHD Waveguide Couplers
 WG Size Freq. (GHz) Standard
Model No.*		 Connector Length
Inches		 Outline
Drawing
 WR51 18.3 - 20.2 51ka-331DA-dBF-dBR-6-6  SMA F  5.00 Dwg
 WR42 18.3 - 20.2 42ka-331DA-dBF-dBR-6-6  SMA F    
 WR34 27.5 - 31.0 34ka-331DA-dBF-dBR-6-6  K F    
 WR28 27.5 - 31.0 28ka-331DA-dBF-dBR-6-6  K F    
Ordering Information
Waveguide Coupler, SLHD, Dual for Ka-Band
 WR -Mod M -dBF -dBR -F2 -F2
Example part number:  34ka -331D A -30F -40R -6 -6
Waveguide Size: (WR)
WR28 thru WR51 available		            
Basic Model No.: (-Mod)          
Material (M): A=Aluminum, B=Copper/Brass        
Fwd. Coupling (dB): 30 dB, 40 dB or 50 dB Coupling        
Rev. Coupling (-dB): 30 dB, 40 dB or 50dB Coupling    
Flange 1 (-F1): 6=Cover, 8=Seal Groove    
Flange 2 (-F2): 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 for your needs by using the Model # code system at left.

Option: Add /PT to part number for pressure sealed unit to 15 psi.