The Narda 766-20 is a fixed coaxial attenuator designed for precise signal power reduction across DC to 4 GHz. It delivers a constant 20 dB insertion loss with 50 ohm nominal impedance and handles 20 W average input power, making it suitable for RF and microwave test benches requiring reliable attenuation and significant power dissipation.
Technical Specifications
• Frequency Range: DC to 4 GHz
• Attenuation Value: 20 dB
• Maximum Input Power (Average): 20 W
• Impedance: 50 ohms nominal
• Connector Type: Type N
• Attenuation Accuracy: ±0.5 dB or ±2% of stated value, whichever is greater
• VSWR: Less than 1.35:1 across operating frequency range
• Operating Temperature Range: −55°C to +125°C
– Key Features
• Fixed 20 dB attenuation across entire frequency range
• Type N connectors for standard RF system integration
• High power handling: 20 W rated input
• Flat frequency response from DC to 4 GHz
• Predictable attenuation accuracy within ±0.5 dB
• Low VSWR performance minimizes reflections
• Wide temperature operating envelope
– Typical Applications
• Signal power reduction in RF test setups
• Power attenuation in microwave measurement systems
• Impedance matching and reflection minimization
• High-power RF signal conditioning
• Laboratory and industrial RF measurement environments
– Compatibility & Integration
The 766-20 interfaces with Type N equipped RF instruments including signal generators, spectrum analyzers, power meters, and test equipment. Its 50 ohm impedance aligns with standard USA RF system specifications, ensuring direct integration into existing measurement infrastructures without impedance mismatch complications.
