Bi-Directional Couplers

555 Series Couplers available in 3, 6, 10, 20, 30, and 40 dB coupling values

Mi-Wave’s 555 Series Bi-directional couplers are broadband, broadwall wavegugide type. The 556 are split block type components with a multi-hold directivity. The 555 Series couplers are available in 3, 6, 10, 20, 30, and 40 dB coupling values for standard waveguide bands from 18 to 220 GHz.

The 555 Series Bi-directional Couplers are used in applications that require precise sampling of both incident and reflected energy. The 3 dB couplers are especially useful in balanced mixer work where broadband power division of RF and LO signals is required to supply both sides of a balanced mixer unit. The 3 dB bi-directional couplers can provide full bandwidth power division

Block Type Coupler
View Catalog PDF

Note: Our website contains just a few types of  Couplers we build. Consult with us for your specific needs.

ModelFrequency (GHz)Coupling Value (dB)Directivity (dB)Coupling Flatness (dB)Coupling Accuracy (dB)VSWRRF Ports
555A-3/59926.5-40330±0.7± 11.05:1WR-28 Waveguide, UG-599
555A-6/59926.5-40630±0.7± 11.05:1WR-28 Waveguide, UG-599
555A-10/59926.5-401030±0.7± 11.05:1WR-28 Waveguide, UG-599
555A-20/59926.5-402030±0.7± 11.05:1WR-28 Waveguide, UG-599
555A-30/59926.5-403030±0.7± 11.05:1WR-28 Waveguide, UG-599
555A-40/59926.5-404030±0.7± 11.05:1WR-28 Waveguide, UG-599
555B-3/38333-50335± 1± 1.51.10:1WR-22 Waveguide, UG-383
555B-6/38333-50635± 1± 1.51.10:1WR-22 Waveguide, UG-383
555B-10/38333-501035± 1± 1.51.10:1WR-22 Waveguide, UG-383
555B-20/38333-502035± 1± 1.51.10:1WR-22 Waveguide, UG-383
555B-30/38333-503035± 1± 1.51.10:1WR-22 Waveguide, UG-383
555B-40/38333-504035± 1± 1.51.10:1WR-22 Waveguide, UG-383
555U-3/38340-60335±0.7± 11.05:1WR-19 Waveguide, UG-383
555U-6/38340-60635±0.7± 11.05:1WR-19 Waveguide, UG-383
555U-10/38340-601035±0.7± 11.05:1WR-19 Waveguide, UG-383
555U-20/38340-602035±0.7± 11.05:1WR-19 Waveguide, UG-383
555U-30/38340-603035±0.7± 11.05:1WR-19 Waveguide, UG-383
555U-40/38340-604035±0.7± 11.05:1WR-19 Waveguide, UG-383
555V-3/38550-75330±0.7± 11.10:1WR-15 Waveguide, UG-385
555V-6/38550-75630±0.7± 11.10:1WR-15 Waveguide, UG-385
555V-10/38550-751030±0.7± 11.10:1WR-15 Waveguide, UG-385
555V-20/38550-752030±0.7± 11.10:1WR-15 Waveguide, UG-385
555V-30/38550-753030±0.7± 11.10:1WR-15 Waveguide, UG-385
555V-40/38550-754030±0.7± 11.10:1WR-15 Waveguide, UG-385
555E-3/38760-90330± 1± 1.51.10:1WR-12 Waveguide, UG-387
555E-6/38760-90630± 1± 1.51.10:1WR-12 Waveguide, UG-387
555E-10/38760-901030± 1± 1.51.10:1WR-12 Waveguide, UG-387
555E-20/38760-902030± 1± 1.51.10:1WR-12 Waveguide, UG-387
555E-30/38760-903030± 1± 1.51.10:1WR-12 Waveguide, UG-387
555E-40/38760-904030± 1± 1.51.10:1WR-12 Waveguide, UG-387
555W-3/38775-110330± 1± 1.51.10:1WR-10 Waveguide, UG-387
555W-6/38775-110630± 1± 1.51.10:1WR-10 Waveguide, UG-387
555W-10/38775-1101030± 1± 1.51.10:1WR-10 Waveguide, UG-387
555W-20/38775-1102030± 1± 1.51.10:1WR-10 Waveguide, UG-387
555W-30/38775-1103030± 1± 1.51.10:1WR-10 Waveguide, UG-387
555W-40/38775-1104030± 1± 1.51.10:1WR-10 Waveguide, UG-387


• Full band Operation

• Compact Sizes

• Low VSWR

• Rugged Construction


• Measurement Systems

• Transmitter Applications / Dummy Loads

• Satellite

• Microwave Radio

• Source Leveling

• 5G & 6G

standard gain horn antenna page

How to Order & Custom Products

As the manufacturing source, we have top sales engineers ready to answer all your questions and quote you on product needs. You’ll find our prices are some of the best since we manufacture all our millimeter wave products in house.

Have a custom job or unique need? No problem! Contact us so we can work on solutions to meet your needs.

2007 Gandy Blvd N
Suite 1310
St. Petersburg, FL 33702

Tel: 727-563-0034
Fax: 727-563-0031

Email: [email protected]

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