Flann Crossguide Couplers consist of two waveguides joined at 90˚ with the coupling element mounted in the common broad wall. Couplers are available in 3 or 4 port configurations and standard
coupling values are 20, 30, 40 and 50 dB; directivity for models up to 18 GHz is better than 20 dB over the specified frequency range.
The compactness of the crossguide coupler suits many applications where space is at a premium and directivity is not the prime consideration, e.g. power and frequency monitoring and isolating
local oscillators. Models are available with combinations of waveguide and coaxial ports.
Special multiport crossguide couplers can be manufactured to suit customers’ requirements.
Specifications:
| Model | Frequency Range (GHz) | Waveguide | Minimum Directivity (dB) | Coupling | Dimensions (mm) | Weight (kg) | ||||||
| WG | R | WR | Sensitivity (dB) | Nominal Accuracy (dB) | A | B | C | 3 Port | 4 Port | |||
| 10270 | 2.60 - 3.95 | 10 | 32 | 284 | 20 | ±1.5 | ±2 | 90 | 34 | 308 | 5 | 4.9 |
| 11A270 | 3.22 - 4.90 | 11A | 40 | 229 | 20 | ±1.5 | ±2 | 62.5 | 29 | 256 | 2.3 | 1.9 |
| 12270 | 3.94 - 5.99 | 12 | 48 | 187 | 20 | ±1.5 | ±2 | 61.5 | 22 | 227 | 2.1 | 2 |
| 13270 | 4.64 - 7.05 | 13 | 58 | 159 | 20 | ±1.5 | ±2 | 58 | 21 | 224 | 1.8 | 1.7 |
| 14270 | 5.38 - 8.18 | 14 | 70 | 137 | 20 | ±1.5 | ±2 | 55 | 15.5 | 179 | 1.4 | 1.3 |
| 15270 | 6.58 - 10.0 | 15 | 84 | 112 | 20 | ±1.5 | ±2 | 42.5 | 12.6 | 164 | 0.7 | 0.65 |
| 16270 | 8.20 - 12.5 | 16 | 100 | 90 | 20 | ±1.5 | ±2 | 36 | 10.5 | 136 | 0.4 | 0.4 |
| 17270 | 9.84 - 15.0 | 17 | 120 | 75 | 20 | ±1.5 | ±2 | 32.5 | 9.5 | 108 | 0.35 | 0.35 |
| 18270 | 11.9 - 18.0 | 18 | 140 | 62 | 20 | ±1.5 | ±2 | 30 | 8 | 96 | 0.25 | 0.25 |
| 19270 | 14.5 - 22.0 | 19 | 180 | 51 | 18 | ±1.5 | ±2 | 30 | 7 | 90 | 0.22 | 0.22 |
| 20270 | 17.6 - 26.7 | 20 | 220 | 42 | 18 | ±1.5 | ±2 | 22.5 | 4.5 | 65 | 0.1 | 0.1 |
| 21270 | 21.7 - 33.0 | 21 | 260 | 42 | 18 | ±2 | ±2 | 22.5 | 4.7 | 73 | 0.1 | 0.1 |
| 22270 | 26.4 - 40.1 | 22 | 320 | 28 | 18 | ±2 | ±2 | 20.7 | 3.8 | 50 | 0.07 | 0.07 |
| 23270 | 33.0 - 50.1 | 23 | 400 | 22 | 15 | ±2 | ±2 | 20 | 3 | 48 | 0.08 | 0.08 |
| 24270 | 39.3 - 59.7 | 24 | 500 | 19 | 15 | ±2 | ±2 | 20 | 2.5 | 48 | 0.08 | 0.08 |
| 25270 | 49.9 - 75.8 | 25 | 620 | 15 | 15 | ±2 | ±2 | 14 | 2 | 34.5 | 0.07 | 0.07 |
| 26270 | 60.5 - 92.0 | 26 | 740 | 12 | 10 | ±2.5 | ±2.5 | 14 | 1.6 | 34.5 | 0.07 | 0.07 |
| 27270 | 73.8 - 112 | 27 | 900 | 10 | 10 | ±2.5 | ±2.5 | 14 | 1.4 | 34.5 | 0.07 | 0.07 |
| 28270 | 92.3 - 140 | 28 | 1200 | 8 | 10 | ±2.5 | ±2.5 | 14 | 1.1 | 34.5 | 0.07 | 0.07 |
| 29270 | 114 - 173 | 29 | 1400 | 6 | Specifications available on request |
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| 30270 | 145 - 220 | 30 | 1800 | 5 | ||||||||
| 31270 | 172 - 261 | 31 | 2200 | 4 | ||||||||
| 32270 | 217 - 330 | 32 | 2600 | 3 | ||||||||
