The Weinschel VM4A is a fixed coaxial RF attenuator engineered for precision signal attenuation across broad frequency ranges. This 50 Ohm impedance component delivers stable, accurate attenuation with minimal signal reflection, making it suitable for test systems, measurement applications, and signal conditioning in RF/microwave circuits.
Technical Specifications
Electrical Performance
• Nominal Impedance: 50 Ohms
• Attenuation Values: Available in fixed dB increments (1 dB to 60 dB and higher)
• Attenuation Accuracy: Maximum deviation typically ±0.3 dB to ±1.5 dB across frequency
• VSWR: 1.15:1 up to 4 GHz; increases at higher frequencies (up to 1.35:1 or 1.80:1 dependent on model)
• Insertion Loss: 0.2 dB to 1.0 dB typical
• Temperature Coefficient: < 0.0003 dB/dB·°C
• Power Coefficient: < 0.001 dB/dB·W
Power Handling
• Average Power: 0.5 W to 5 W at 25°C (higher power models available up to 1000 W)
• Peak Power: 0.5 kW to 1 kW
Operating Environment
• Frequency Range: DC to multiple GHz limits (6 GHz, 12.4 GHz, 18 GHz, 26.5 GHz, 40 GHz, or 50 GHz dependent on model)
• Operating Temperature: 0°C to 85°C
• Storage Temperature: -55°C to +125°C
– Key Features
• Stainless steel connector construction meeting MIL-DTL-3933 environmental specifications
• SMA or Type N connectors available; MIL-STD-348A interface compliance
• Low VSWR ensures minimal signal reflection across operating range
• Exceptional temperature and power stability for repeatable measurements
• Designed for demanding military and industrial applications
– Typical Applications
• RF/microwave test and measurement systems
• Signal power conditioning and leveling
• Impedance matching networks
• High-reliability military and aerospace systems
– Compatibility & Integration
Connector interface dimensions conform to MIL-STD-348A with mating compatibility per MIL-PRF-39012, enabling integration into standard RF test configurations and existing measurement setups.
