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.
| Model | Frequency Range (GHz) | Waveguide | Minimum Directivity (dB) | Coupling (3, 10 & 20 dB) | Additional Primary Arm Loss (dB) | Primary Arm VSWR * | Secondary Arm VSWR | |||
| WG | R | WR | Sensitivity (±dB) | Nominal Accuracy (dB)** |
||||||
| 10131 | 2.60 - 3.95 | 10 | 32 | 284 | 40 | 0.5 | 5% | Not Applicable | 1.03 | 1.1 |
| 11A131 | 3.22 - 4.90 | 11A | 40 | 229 | 40 | 0.5 | 5% | 1.03 | 1.1 | |
| 12131 | 3.94 - 5.99 | 12 | 48 | 187 | 40 | 0.5 | 5% | 1.03 | 1.1 | |
| 13131 | 4.64 - 7.05 | 13 | 58 | 159 | 40 | 0.5 | 5% | 1.03 | 1.1 | |
| 14131 | 5.38 - 8.18 | 14 | 70 | 137 | 40 | 0.5 | 5% | 1.03 | 1.1 | |
| 15131 | 6.58 - 10.0 | 15 | 84 | 112 | 40 | 0.5 | 5% | 1.03 | 1.1 | |
| 16131 | 8.20 - 12.5 | 16 | 100 | 90 | 40 | 0.5 | 5% | 1.03 | 1.1 | |
| 17131 | 9.84 - 15.0 | 17 | 120 | 75 | 40 | 0.5 | 5% | 1.03 | 1.1 | |
| 18131 | 11.9 - 18.0 | 18 | 140 | 62 | 40 | 0.5 | 5% | 1.03 | 1.1 | |
| 19131 | 14.5 - 22.0 | 19 | 180 | 51 | 40 | 0.5 | 5% | 1.03 | 1.1 | |
| 20131 | 17.6 - 26.7 | 20 | 220 | 42 | 40 | 0.75 | 7% | 0.3 | 1.03 | 1.2 |
| 21131 | 21.7 - 33.0 | 21 | 260 | 34 | 40 | 0.75 | 7% | 0.4 | 1.03 | 1.2 |
| 22131 | 26.4 - 40.1 | 22 | 320 | 28 | 40 | 0.75 | 7% | 0.5 | 1.03 | 1.2 |
** Nominal coupling accuracy for 3 dB and 6 dB couplers is ± 0.5 dB.
Outline Dimensions
| Model | Dimensions (mm) | Weight (kg) | ||||||
| A | B | C | 3 dB | 10 dB | 20 dB | |||
| 3 dB | 10 dB | 20 dB | ||||||
| 10131 | On request | 1215 | 1029 | 85 | 130 | On request | 10.6 | 8 |
| 11A131 | 1432 | 965 | 817 | 70 | 100 | 8.4 | 5.7 | 4.6 |
| 12131 | 1233 | 853 | 733 | 60 | 90 | 6.2 | 4.3 | 3 |
| 13131 | 1108 | 785 | 676 | 55 | 75 | 4.7 | 3.3 | 2.6 |
| 14131 | 991 | 706 | 615 | 50 | 60 | 3.7 | 2.6 | 2.2 |
| 15131 | 766 | 534 | 460 | 35 | 50 | 2 | 1.5 | 1.3 |
| 16131 | 658 | 476 | 417 | 35 | 45 | 1.3 | 1 | 0.8 |
| 17131 | 538 | 387 | 338 | 35 | 40 | 1 | 0.8 | 0.6 |
| 18131 | 465 | 340 | 298 | 30 | 35 | 1 | 0.8 | 0.6 |
| 19131 | 397 | 300 | 262 | 30 | 35 | 0.4 | 0.4 | 0.3 |
| 20131 | 314 | 228 | 201 | 25 | 25 | 0.25 | 0.18 | 0.16 |
| 21131 | 284 | 215 | 194 | 25 | 25 | 0.25 | 0.18 | 0.16 |
| 22131 | 237 | 180 | 162 | 24 | 29 | 0.2 | 0.16 | 0.14 |
