Loop Couplers, Double Ridge

Waveguide Double Ridge Loop Couplers

ATM manufactures Loop couplers covering a wide frequency range. Multiple flange and Coaxial connector types and configurations are available.

Our double ridge waveguide loop couplers are ideal for RF microwave applications where high power sensing is desired. These single arm waveguide loop couplers are available with SMA or Type-N connectors. Multi arm models are also available.

Double ridge waveguide loop couplers cover the full waveguide frequency with standard coupling values of 30db, 40db, 50db, and 60db, however other options are available upon request.

Rectangular waveguide loop couplers are also available. Pressure sealed double ridge loop couplers are also available for microwave applications that require sealed systems. For more information feel free to call us and discuss your needs with one of our design engineers.

GENERAL SPECIFICATIONS DOUBLE RIDGE LOOP COUPLERS
Double Ridge Waveguide Loop Couplers - SMA • Full waveguide frequency range • Ideal for High Power Sensing • Single Arm standard • Multi-Arm available	Electrical VSWR: Primary: 1.07 Max Coax: 1.50 Max (SMA F), 1.50 Max (TypeN F) Coupling: 30, 40, 50, or 60dB std., others available upon request. Nominal Coupling: +/- 1.00 dB Frequency Sensitivity: +/- 1.50dB max. Directivity: 12dB min., 15dB typ. RF Connectors: SMA-F, Type-N-F (Standard) Mechanical Body: Aluminum ONLY 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 Sealed Units: Add "/PT" to model number. Example P/N: 580-307-dB-C3-C3 Sealed P/N: 580-307-dB-C3-C3/PT Note: Pressure sealed units will hold 15 psi assuming all waveguide and coax ports are mated and sealed.

GENERAL SPECIFICATIONS
DOUBLE RIDGE LOOP COUPLERS

Double Ridge Waveguide Loop Couplers - SMA

• Full waveguide frequency range
• Ideal for High Power Sensing
• Single Arm standard
• Multi-Arm available

Electrical
VSWR:
Primary: 1.07 Max
Coax: 1.50 Max (SMA F), 1.50 Max (TypeN F)
Coupling: 30, 40, 50, or 60dB std., others available upon request.
Nominal Coupling: +/- 1.00 dB
Frequency Sensitivity: +/- 1.50dB max.
Directivity: 12dB min., 15dB typ.
RF Connectors: SMA-F, Type-N-F (Standard)
Mechanical
Body: Aluminum ONLY
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 Sealed Units: Add "/PT" to model number.
Example P/N: 580-307-dB-C3-C3
Sealed P/N: 580-307-dB-C3-C3/PT
Note: Pressure sealed units will hold 15 psi assuming all waveguide and coax ports are mated and sealed.

Double Ridge Waveguide Loop Coupler - SMA (F)
Double Ridge Waveguide Loop Couplers - SMA
WG Size	Freq. (GHz)	Basic Model No.*	RF Power Avg Watts	Peak Power (KW)	Dim A (Inches)	Dim B (Inches)	Dim C (Inches)	Outline Drawings
WRD750	7.50 - 18.0	750-307-dB-C3-C3	1550	12	2.5	0.9	0.63
WRD650	6.50 - 18.0	650-307-dB-C3-C3	1400	11	2.5	0.9	0.63	Dwg
WRD580	5.85 - 14.5	580-307-dB-C3-C3	1750	15	3.0	1.0	0.88	Dwg
WRD475	4.75 - 11.0	475-307-dB-C3-C3	3000	35	3.5	1.1	1.13
WRD350	3.50 - 8.20	350-307-dB-C3-C3	6000	60	3.0	1.1	0.88	Dwg
WRD250	2.60 - 7.80	250-307-dB-C3-C3	10000	60	3.5	1.0	1.12	Dwg

Ordering Information Double Ridge Waveguide Loop Couplers - SMA (F)	WRD	-Mod	-dB	-F1	-F2
Example part number:	750	-307	-30	-C3	-C3
Waveguide Size: (WRD) WRD250 thru WRD750 available
Basic Model No.: (-Mod)
Coupling (-dB): 30, 40, 50 or 60 dB Standard **
Flange 1 (-F1): C=Cover, G= Groove 1=alternate holes, 2=all tapped holes, 3=all thru holes
Flange 2 (-F2): C=Cover, G= Groove 1=alternate holes, 2=all tapped holes, 3=all thru holes 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 to the left.

** The customer must choose the coupling value appropriate for the application (30, 40, 50 or 60dB)

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

For a dual unit modify the P/N by adding a 'D' to the end of the basic model #, the direction of the coupling of both the primary and secondary arms.
Example:
750-307-dB=C3-C3 becomes: 750-307D-dBF-dBR-C3-C3.
(Where F=forward coupling and R=reverse coupling)

Double Ridge Waveguide Loop Coupler - Type N (F)
Double Ridge Waveguide Loop Couplers - SMA
WG Size	Freq. (GHz)	Basic Model No.*	RF Power Avg Watts	Peak Power (KW)	Dim A (Inches)	Dim B (Inches)	Dim C (Inches)	Outline Drawings
WRD750	7.50 - 18.0	750-308-dB-C3-C3	1550	12	2.5	0.8	0.63
WRD650	6.50 - 18.0	650-308-dB-C3-C3	1400	11	2.5	0.8	0.63
WRD580	5.85 - 14.5	580-308-dB-C3-C3	1750	15	3.0	0.8	0.88
WRD475	4.75 - 11.0	475-308-dB-C3-C3	3000	35	3.5	0.8	1.13
WRD350	3.50 - 8.20	350-308-dB-C3-C3	6000	60	3.0	0.8	1.13
WRD250	2.60 - 7.80	250-308-dB-C3-C3	10000	60	3.5	1.63	1.12	Dwg

Ordering Information Double Ridge Waveguide Loop Couplers - Type-N (F)	WRD	-Mod	-dB	-F1	-F2
Example part number:	750	-308	-30	-C3	-C3
Waveguide Size: (WRD) WRD250 thru WRD750 available
Basic Model No.: (-Mod)
Coupling (-dB): 30, 40, 50 or 60 dB Standard **
Flange 1 (-F1): C=Cover, G= Groove 1=alternate holes, 2=all tapped holes, 3=all thru holes
Flange 2 (-F2): C=Cover, G= Groove 1=alternate holes, 2=all tapped holes, 3=all thru holes See ATM Standard Flange page for more info.

** Customer must choose the coupling value appropriate for the application (30, 40, 50 or 60dB)

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

For a dual unit modify the P/N by adding a 'D' to the end of the basic model #, the direction of the coupling of both the primary and secondary arms.
Example:
750-308-dB=C3-C3 becomes: 750-308D-dBF-dBR-C3-C3.
(Where F=forward coupling and R=reverse coupling)

Double Ridge Waveguide Loop Couplers

Waveguide Double Ridge Loop Couplers