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Features

  • High Directivity
  • Models from 2.6 GHz to 40.1 GHz

The Flann Series 131 Directional Couplers are suitable where high quality is to be incorporated at moderate cost.

A high directivity is offered in all waveguide sizes within the frequency range 2.6 GHz to 40.1 GHz. The standard coupling values are 3, 10 and 20 dB, other values for example 6, 30 and 40 dB can be supplied.

IMPORTANT! All directivities quoted include the measuring port and flange performance when connected to an ideal termination.

4 port couplers can be supplied to order, however the directivity will be less than for 3 port units.

           
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)**
101312.60 - 3.951032284400.55%Not Applicable1.031.1
11A1313.22 - 4.9011A40229400.55%1.031.1
121313.94 - 5.991248187400.55%1.031.1
131314.64 - 7.051358159400.55%1.031.1
141315.38 - 8.181470137400.55%1.031.1
151316.58 - 10.01584112400.55%1.031.1
161318.20 - 12.51610090400.55%1.031.1
171319.84 - 15.01712075400.55%1.031.1
1813111.9 - 18.01814062400.55%1.031.1
1913114.5 - 22.01918051400.55%1.031.1
2013117.6 - 26.72022042400.757%0.31.031.2
2113121.7 - 33.02126034400.757%0.41.031.2
2213126.4 - 40.12232028400.757%0.51.031.2

* 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

         
ModelDimensions (mm)Weight (kg)
ABC3 dB10 dB20 dB
3 dB10 dB20 dB
10131On request1215102985130On request10.68
11A1311432965817701008.45.74.6
12131123385373360906.24.33
13131110878567655754.73.32.6
1413199170661550603.72.62.2
15131766534460355021.51.3
1613165847641735451.310.8
17131538387338354010.80.6
18131465340298303510.80.6
1913139730026230350.40.40.3
2013131422820125250.250.180.16
2113128421519425250.250.180.16
2213123718016224290.20.160.14