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Features

  • 46 dB High Directivity
  • Models up to 40.1 GHz
  • Low Coupling Sensitivity

The Flann Series 132 directional couplers provide a very high directivity and have been designed for use in quality waveguide measurement systems within the frequency range 3.3 GHz to 40.1 GHz.

The configuration is of a 3 port instrument incorporating a built-in low reflection termination. The coupling array is designed to achieve low sensitivity of coupling versus frequency whilst maintaining main arm VSWR. The standard coupling values are 3, 10 and 20 dB for each waveguide size. Other values can be supplied, for example 6, 30 and 40 dB.

           
ModelFrequency Range (GHz)WaveguideMinimum Directivity (dB)Coupling (3, 10 & 20 dB)Additional Primary Arm Loss (dB)Primary Arm VSWR*Secondary Arm VSWR
WGRWRSensitivity
(±dB)
Nominal Accuracy (dB)**
101322.60 - 3.951032284460.55%N/A1.031.10
11A1323.22 - 4.9011A40229460.55%N/A1.031.10
121323.94 - 5.991248187460.55%N/A1.031.10
131324.64 - 7.051358159460.55%N/A1.031.10
141325.38 - 8.181470137460.55%N/A1.031.10
151326.58 - 10.01584112460.55%N/A1.031.10
161328.20 - 12.51610090460.55%N/A1.031.10
171329.84 - 15.01712075430.55%N/A1.031.10
1813211.9 - 18.01814062430.55%N/A1.031.10
1913214.5 - 22.01918051430.55%0.21.031.10
2013217.6 - 26.72022042430.757%0.31.031.20
2113221.7 - 33.02126034430.757%0.41.031.20
2213226.4 - 40.12232028430.757%0.51.031.20

* Primary arm VSWR specification is 1.10:1 for all 3 dB couplers.
** Nominal coupling accuracy for 3 dB and 6 dB couplers is ± 0.5 dB.

Outline Dimensions

           
ModelFrequency Range (GHz)WaveguideMinimum Directivity (dB)Coupling (3, 10 & 20 dB)Additional Primary Arm Loss (dB)Primary Arm VSWR*Secondary Arm VSWR
WGRWRSensitivity
(±dB)
Nominal Accuracy (dB)**
101322.60 - 3.951032284460.55%N/A1.031.1
11A1323.22 - 4.9011A40229460.55%N/A1.031.1
121323.94 - 5.991248187460.55%N/A1.031.1
131324.64 - 7.051358159460.55%N/A1.031.1
141325.38 - 8.181470137460.55%N/A1.031.1
151326.58 - 10.01584112460.55%N/A1.031.1
161328.20 - 12.51610090460.55%N/A1.031.1
171329.84 - 15.01712075430.55%N/A1.031.1
1813211.9 - 18.01814062430.55%N/A1.031.1
1913214.5 - 22.01918051430.55%0.21.031.1
2013217.6 - 26.72022042430.757%0.31.031.2
2113221.7 - 33.02126034430.757%0.41.031.2
2213226.4 - 40.12232028430.757%0.51.031.2