Waveguide Couplers,

Loop

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

ATM manufactures Loop couplers covering a wide frequency range.  Multiple flange and Coaxial connector types and configurations are available.  For more information feel free to call us and discuss your needs with one of our design engineers.

 

  • Full waveguide frequency range
  • Units pressure tested to 30 psi
  • Ideal for High Power Sensing
  • Single Arm standard, Multi-arm available
  • Available in Aluminum or Brass
  • Finish is a unique corrosion-resistant 316 stainless steel epoxy coating.
  • Coupling: 30, 40, 50 or 60dB standard, others available upon request.
  • VSWR Primary: 1.07 max (1.1 max WR42 thru WR28)
    VSWR Coax: 1.35 max (1.60 max. WR42 thru WR28)
  • Nominal Coupling: +/- 1.00dB
  • Frequency Sensitivity +/- 1.00dB max.
  • Directivity: 15dB min., 20dB typ.

 

Waveguide Loop Coupler - SMA

SMA Loop Coupler

Standard Models
WG Size Freq GHz Basic Model No.*
(SMA F)

Dim A
(Inches)

 Dim B max.
(Inches)		 Dim C
(Inches)
WR430 1.70 - 2.60 430-307A-dB-2-2 4.5 1.87 1.63
WR284 2.60 - 3.95 284-307A-dB-6-6 4.5 1.69 1.63
WR229 3.30 - 4.90 229-307A-dB-2-2 4.0 1.58 1.38
WR187 3.95 - 5.85 187-307A-dB-6-6 3.5 1.44 1.13
WR159 4.90 - 7.05 159-307A-dB-2-2 3.5 1.40 1.13
WR137 5.85 - 8.20 137-307A-dB-2-2 3.0 1.32 0.88
WR112 7.05 - 10.0 112-307A-dB-6-6 3.0 1.25 0.88
WR90 8.20 - 12.4 90-307A-dB-6-6 3.0 1.19 0.88
WR75 10.0 - 15.0 75-307A-dB-6-6 3.0 1.18 0.88
WR62 12.4 - 18.0 62-307A-dB-6-6 3.0 1.14 0.88
WR51 15.0 - 22.0 51-307A-dB-6-6 3.0 1.11 0.88
WR42 18.0 - 26.5 42-307A-dB-6-6 3.0 1.07 0.88
WR34 22.0 - 33.0 34-307A-dB-6-6 3.0 1.07 0.88
WR28 26.5 - 40.0 28-307A-dB-6-6 3.0 1.05 0.88
*Insert desired coupling value (30, 40, 50 or 60dB) in the model number where dB is listed
Ordering Information
    Typical Part #:             WG Size-307 Material -Coupling(dB) -Flange1 -Flange2
    
Example P/N:

90-307A-60-6-6 is: WR90 - 307 Coupler (SMA-F) - Aluminum material - 60dB - Cover flange - Cover flange
See ATM Flange page for more info on flanges.

 

For a dual unit modify the P/N by adding a D to the end of the basic model #, the direction of the coupling and the coupling value of the second coupling arm.
Example: 90-307A-dB-6-6 now becomes: 90-307AD-dBF-dBR-6-6
(where dBF= forward coupling and dBR= reverse coupling)

 

The Model numbers listed above are the most common model numbers for WG size, material, coupling and flanges however, these models can easily be altered to accommodate customer needs by following the Model # code system.  In addition the customer must choose the coupling value appropriate for application (30dB, 40dB, 50dB or 60dB) and insert it in the model number where dB is listed

 

Waveguide Loop Coupler - Type-N

Standard Models
WG Size Freq GHz Basic
Model No.
(Type N (F))*

Dim A
(Inches)

 Dim B
(Inches)		 Dim C
(Inches)
WR430 1.70 - 2.60 430-308A-dB-2-2 4.5 2.50 1.63
WR284 2.60 - 3.95 284-308A-dB-6-6 4.5 2.20 1.63
WR229 3.30 - 4.90 229-308A-dB-2-2 4.0 2.09 1.38
WR187 3.95 - 5.85 187-308A-dB-6-6 3.5 1.95 1.13
WR159 4.90 - 7.05 159-308A-dB-2-2 3.5 1.91 0.88
WR137 5.85 - 8.20 137-308A-dB-2-2 3.0 1.83 0.88
WR112 7.05 - 10.0 112-308A-dB-6-6 3.0 1.76 0.88
WR90 8.20 - 12.4 90-308A-dB-6-6 3.0 1.70 0.88
WR75 10.0 - 15.0 75-308A-dB-6-6 3.0 1.18 0.88
WR62 12.4 - 18.0 62-308A-dB-6-6 3.0 1.14 0.88
*Insert desired coupling value (30, 40, 50 or 60dB) in the model number where dB is listed
Ordering Information
            Typical Part #:                 WGSize-308 Material -Coupling(dB) -Flange1 -Flange2
                

Example P/N:

159-308A-60-2-2 is: WR159 - 308 Coupler (Type N-F) Aluminum material - 60dB - CPRF flange. - CPRF flange  See ATM Flange page for more info on flanges.


For a dual unit modify the P/N by adding a D to the end of the basic model #, the direction of the coupling and the coupling value of the second coupling arm
Example: 159-308A-dB-2-2 now becomes: 159-308AD-dBF-dBR-2-2
(where dBF= forward coupling and dBR= reverse coupling)

The Model numbers listed above are the most common model numbers for WG size, material, coupling and flanges however, these models can easily be altered to accommodate customer needs by following the Model # code system.  In addition the customer must choose the coupling value appropriate for application (30dB, 40dB, 50dB or 60dB) and insert it in the model number where dB is listed

 

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