Fixed RF attenuators – 75 ohms, N connector and DC to 4 GHz: BM10081 series | Bracke Manufacturing
Bracke BM10081 fixed 75-ohm RF attenuators with N connectors, a 2 W power rating, DC to 4 GHz operation and attenuation values from 1 to 30 dB.
The Bracke BM10081 series consists of fixed coaxial RF attenuators for 75-ohm signal paths with an N connector. All models cover a frequency range from DC to 4 GHz and have a specified power rating of 2 W.
The series is available with fixed attenuation values of 1, 2, 3, 6, 10, 20 and 30 dB. Attenuation accuracy ranges from ±0.4 to ±0.8 dB, depending on the selected model. A maximum VSWR of 1.30:1 is specified for every listed reference.
Advantages
- 75-ohm system impedance: For compatible coaxial RF signal paths and measurement chains.
- Frequency range from DC to 4 GHz: Common specified frequency coverage across all versions.
- Seven fixed attenuation values: Choice of 1, 2, 3, 6, 10, 20 or 30 dB.
- 2 W power rating: Common specified RF power across the series.
- Defined attenuation accuracy: Model-specific values from ±0.4 to ±0.8 dB.
- Consistent maximum VSWR: 1.30:1 for all listed models.
Key features
- Product type: Fixed coaxial RF attenuator
- Manufacturer: Bracke Manufacturing
- Product series: BM10081
- Impedance: 75 ohms
- Connector: N
- Frequency range: DC to 4 GHz
- Power rating: 2 W
- Attenuation values: 1, 2, 3, 6, 10, 20 and 30 dB
- Attenuation accuracy: ±0.4 to ±0.8 dB, depending on the model
- Maximum VSWR: 1.30:1
Typical applications
- Defined signal-level reduction in coaxial 75-ohm RF signal paths
- Level adjustment between signal sources, components and measurement instruments
- RF measurement and test setups up to 4 GHz
- Testing and characterisation of 75-ohm RF components and assemblies
- Integration into laboratory, development and production environments
- Signal conditioning in systems using N connectors
Additional information
The appropriate BM10081 reference is selected according to the required attenuation value and permitted attenuation deviation. EMCO supports the technical selection of the appropriate model and its positioning within the complete 75-ohm measurement or system chain.
Model comparison
| Reference | Attenuation | Attenuation accuracy | Frequency range | Power rating | Max. VSWR |
|---|---|---|---|---|---|
| BM10081.1 | 1 dB | ±0.4 dB | DC to 4 GHz | 2 W | 1.30:1 |
| BM10081.2 | 2 dB | ±0.4 dB | DC to 4 GHz | 2 W | 1.30:1 |
| BM10081.3 | 3 dB | ±0.4 dB | DC to 4 GHz | 2 W | 1.30:1 |
| BM10081.6 | 6 dB | ±0.4 dB | DC to 4 GHz | 2 W | 1.30:1 |
| BM10081.10 | 10 dB | ±0.6 dB | DC to 4 GHz | 2 W | 1.30:1 |
| BM10081.20 | 20 dB | ±0.6 dB | DC to 4 GHz | 2 W | 1.30:1 |
| BM10081.30 | 30 dB | ±0.8 dB | DC to 4 GHz | 2 W | 1.30:1 |
