The Keysight W8486A is a waveguide power sensor engineered for precise average power measurements across the W-band frequency spectrum. Operating from 75 GHz to 110 GHz, it measures power levels from -30 dBm to +20 dBm using a diode sensing element. The sensor integrates directly into waveguide systems via a WR-10 (UG-387/U) flange, minimizing signal loss and measurement uncertainty. Its exceptional SWR performance—less than 1.08 across the band and below 1.076 at the 50 MHz calibration port—significantly reduces mismatch uncertainty in demanding millimeter-wave applications.
Technical Specifications
Frequency and Power
• Frequency range: 75 GHz to 110 GHz
• Power measurement range: -30 dBm to +20 dBm
• Sensing element: Diode
Electrical Performance
• Maximum SWR: < 1.08
• SWR at 50 MHz: < 1.076
• Waveguide flange: WR-10 (UG-387/U)
• Calibration port: 50 MHz
Physical Characteristics
• Dimensions: 38 mm × 199 mm × 60 mm
• Net weight: 0.426 kg
• Recommended calibration cycle: 1 year
– Key Features
• Diode-based sensing element for reliable average power detection
• NIST-traceable calibration for millimeter-wave applications
• Excellent SWR performance minimizes mismatch-related measurement errors
• Direct WR-10 waveguide integration with minimal transition loss
• 50 MHz calibration port supports system verification and recalibration
– Typical Applications
• W-band power measurement in radar and communication systems
• Millimeter-wave component characterization
• High-frequency amplifier and transmitter testing
• Waveguide system validation and performance monitoring
– Compatibility & Integration
The W8486A connects to Keysight power meters across multiple product families:
• Current platforms: EPM series (E4418B/19B, N1913A/14A), EPM-P series (E4416A/17A), P-Series (N1911A/12A)
• Legacy support: 70100A, E1416A, 435B, 436A, 437B, 438A, E4418A, E4419A, and discontinued EPM meters (N1913/14A)
