The Agilent/Keysight R382A is a waveguide variable attenuator engineered for precision attenuation control across R-band microwave frequencies. This WR-28 component delivers stable, repeatable attenuation from 0 to 50 dB through a resistive-card mechanism that rotates independently of temperature and humidity—critical for RF and microwave measurement systems where environmental drift degrades performance. The R382A handles 1 Watt CW power and maintains attenuation accuracy of ±0.2% or 0.1 dB (whichever is greater) across its full operating range. Its reflection coefficient remains below 0.07 (1.15 SWR maximum) throughout all frequencies and attenuation settings, ensuring minimal signal distortion in test configurations. Large, easy-to-read dials enable rapid manual control. Residual attenuation stays below 1 dB at zero setting.
Technical Specifications
• Frequency Range: 26.5 to 40 GHz
• Attenuation Range: 0 to 50 dB
• Attenuation Accuracy: ±0.2% or 0.1 dB (whichever is greater)
• Incremental Accuracy: ±2% of reading in dB, or 0.1 dB (whichever is greater)
• Residual Attenuation: Less than 1 dB (at zero setting)
• Maximum SWR: 1.15
• Reflection Coefficient: Less than 0.07
• Maximum CW Power: 1 Watt
• Waveguide Designator: EIA WR-28 (MIL-W-85/3-008)
• Flange Type: UG-599/U (MIL-F-3922/54C-003)
• Weight: Approximately 5 lbs (2.3 kg)
– Key Features
• Resistive-card attenuation mechanism insensitive to temperature and humidity fluctuations
• Highly stable performance across 0–50 dB range
• Rapid manual adjustment via large calibrated dials
• Low reflection coefficient across entire frequency and attenuation span
– Typical Applications
• RF and microwave test and measurement systems
• Signal level control in demanding laboratory environments
• Precision attenuation in R-band frequency testing
– Compatibility & Integration
The R382A interfaces directly with WR-28 waveguide systems via standard UG-599/U flanges. Operation and service guidance is provided in the 382A Variable Attenuator manual, which covers the K382A, P382A, R382A, and X382A series.
