Agilent/Keysight V8486A

The Agilent/Keysight V8486A is a diode-based waveguide power sensor engineered for accurate average power measurements across the V-band (50 GHz to 75 GHz). Using Modified Barrier Integrated Diode (MBID) technology, the sensor converts AC voltage to a DC signal proportional to the square of the AC voltage, delivering true-average detection with minimal measurement uncertainty. An excellent SWR of 1.06 (>30 dB return loss) reduces mismatch errors inherent in high-frequency power measurement.

Technical Specifications

• Frequency Range: 50 GHz to 75 GHz


• Power Range: −30 dBm to +20 dBm (1 µW to 100 mW); −60 dBm to +20 dBm with Option H02


• Maximum Power: 200 mW average; 40 W peak (10 µs pulses, 0.5% duty cycle)


• Power Linearity: 30 dB return loss)


• Sensing Element: Diode power sensor with square-law characteristic


• Calibration Port: 50 MHz Type-N connector; NIST-traceable calibration at millimeter-wave frequencies


• Waveguide Interface: Precision V-band (EIA WR-15, IEC R-620, British WG-25, JAN RG-273, MIL-W-85/3-018, UG-385/U flange)


• Dimensions: 199 mm × 60 mm × 38 mm


• Weight: 0.4 kg (net)

Key Features

• Modified Barrier Integrated Diode (MBID) technology for reliable true-average detection


• Precision-machined waveguide interface with tight aperture control and flatness tolerances


• Calibration factors printed on sensor; manual entry into power meter (no internal EEPROM)


• Protective plastic flange cover included

Compatibility & Integration The V8486A integrates with Keysight and legacy Agilent power meters via Type-N calibration port and precision waveguide flange connection. Calibration factors require manual meter entry for each measurement session.