Broadband Directional Couplers 559 Series


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Broadband Directional Couplers 559 Series

 
Broadband Directional Couplers  559 Series
Description Features

Mi-Waves’ 559 series broadband directional couplers are broadwall multi-hole energy-coupling devices. The 559 series couplers are designed in 7 waveguide sizes from 18.0 to 110 GHz. Nominal couplings of 3 dB, 6 dB, 10 dB, 20 dB, 30 dB, and 40 dB are offered to complement specific test set requirements. Other custom configurations are available upon request.


Applications
The 559 series directional couplers provide an efficient and convenient means for sampling a finite quantity of power flowing in a transmission line or for injecting a desired signal into the line.

 

• Broadband

•Low VSWR

• High Directivity

• Rugged Construction

• High Coupling Accuracy

• Calibrated Coupling Values

• Minimum Coupling Variation
with Frequency

Dimensional Specifications
Model No. B C D
  in mm in mm in mm in mm
559K/10, 20, 30, 40 11.50 292.0 2.00 50.8 1.50 38.1 .25 6.35
559K/3, 6 dB 12.75 323.9 2.00 50.8 1.50 38.1 .25 6.35
559A/10, 20, 30, 40  9.62 244.0 1.75 44.5 1.38 35.1 .16 4.06
559A/3, 6 dB 12.0 304.8 1.75 44.5 1.38 35.1 .16 4.06
559B/10, 20, 30, 40 8.40 213.0 1.64 41.7 1.30 33.0 .13 3.30
559B/3, 6 dB 10.25 259.1 1.64 41.7 1.30 33.0 .13 3.30
559U/10, 20, 30, 40 7.38 187.4 1.38 35.1 1.12 28.5 .11 2.80
559U/3, 6 dB 9.12 231.6 1.38 35.1 1.12 28.5 .11 2.80
559V/10, 20, 30, 40 6.25 159.0 1.13 28.6 0.88 22.4 .08 2.03
559V/3, 6 dB 7.25 184.1 1.13 28.7 0.88 22.4 .08 2.03
559E/10, 20, 30, 40 5.50 140.0 1.13 28.5 0.88 22.4 .07 1.78
559E/3, 6 dB 6.62 168.1 1.13 28.7 0.88 22.4 .07 1.78
559W/10, 20, 30, 40 4.50 114.0 1.00 25.4 0.81 20.6 .06 1.52
559W/3, 6 dB 5.50 139.7 1.00 25.4 0.81 20.6 .06 1.52
 
               
Technical Specifications
Model Number 559K 559A 555B 555U 555V 555E 555W
Frequency Band
(GHz)
18.0-
26.5
26.5-
40.0
33.0-
50.0
40.0-
60.0
50.0-
75.0
60.0-
90.0
75.0-
110.0
Coupling (dB) ------3, 6, 10, 20, 30, 40------
Coupling Variation (dB)
± 0.6 ± 0.6 ± 0.6 ± 0.8 ± 1.0 ± 1.0 ± 1.0
Coupling Accuracy (dB)
± 1.0 ± 1.0 ± 1.0 ± 1.2 ± 1.5 ± 1.5 ± 1.5  
Directivity (dB) Typical 40 40 40 40 40 40 40
Main Line VSWR 1.05 1.05 1.05 1.10 1.10 1.10 1.10
Auxiliary Line VSWR 1.12 1.12 1.12 1.15 1.15 1.15 1.17