Broadband Directional Couplers 561 Series


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Broadband Directional Couplers 561 Series

 
Broadband Directional Couplers  561 Series
Description Features

Mi-Waves’ 561 series broadband directional couplers are broadwall multi-hole energy-coupling devices. The 561 series devices are available in various waveguide sizes ranging in frequency from 18.0 to 220 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.


Applications
The 561 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 E
  in mm in mm in mm in mm in mm
561A 9.5 241.3 1.50 38.1 1.50 38.1 1.30 33.0 0.65 16.5
561B 8.0 203.2 1.30 33.0 1.50 38.1 1.30 33.0 0.65 16.5
561U 7.0 177.8 1.30 33.0 1.30 33.0 1.30 33.0 0.65 16.5
561E 6.0 152.4 1.30 33.0 1.25 31.8 1.00 25.4 0.50 12.7
561V 5.0 127.0 1.10 27.9 1.00 25.4 1.00 25.4 0.50 12.7
561W 4.0 101.6 1.10 27.9 .80 20.32 1.00 25.4 0.50 12.47
561F 2.88 73.15 1.10 27.9 .80 20.32 1.00 25.4 0.50 12.7
561D 2.88 73.15 1.10 27.9 .80 20.32 1.00 25.4 0.50 12.7
561G 2.88 73.15 1.10 27.9 .80 20.32 1.00 25.4 0.50 12.7
 
                   
Technical Specifications
Model Number 561A 561B 561U 561V 561E 561W 561F 561D 561G
Frequency Band
(GHz)
26.5-
40.0
33.0-
50.0
40.0-
60.0
50.0-
75.0
60.0-
90.0
75.0-
110.0
90.0-
140.0
110.0-
170.0
140.0-
220.0
Coupling (dB) ------3, 6, 10, 20, 30, 40------
Coupling Variation (dB)
± 0.6 ± 0.6 ± 0.8 ± 1.0 ± 1.0 ± 1.0 ± 1.5 ± 1.5 ± 1.5
Coupling Accuracy (dB)
± 1.0 ± 1.0 ± 1.0 ± 1.5 ± 1.5 ± 1.5 ± 2.0 ± 2.0 ± 2.0  
Directivity (dB) Typical 35 35 35 35 35 35 25 25 25
Main Line VSWR 1.05 1.05 1.05 1.10 1.10 1.10 1.15 1.15 1.15
Auxiliary Line VSWR 1.12 1.12 1.12 1.15 1.15 1.17 1.20 1.20 1.20