Agilent/Keysight 8474E

The Agilent/Keysight 8474E is a high-performance RF detector engineered for precise power measurement across microwave and RF systems from 0.01 to 50 GHz. Built on a gallium arsenide planar-doped barrier detecting element, it delivers exceptionally flat frequency response, superior square-law linearity, and stable performance across temperature variations. The detector exhibits high ESD resistance and minimal unit-to-unit frequency response variation, making it suitable for both laboratory and field deployment.

– Technical Specifications

• Frequency Range: 0.01 to 50 GHz
• Detecting Element: Gallium arsenide, planar-doped barrier (PDB)
• Frequency Response Flatness:
– ± 0.4 dB to 26.5 GHz
– ± 0.6 dB to 40 GHz
– ± 1.0 dB to 50 GHz
• Maximum SWR: 1.2 (to 26.5 GHz), 1.6 (to 40 GHz), 2.8 (to 50 GHz)
• Low Level Sensitivity: > 0.4 mV/µW to 40 GHz; > 0.34 mV/µW to 50 GHz
• Maximum Continuous Input Power: 200 mW
• Maximum Short-Term Input Power (< 1 minute): 1 W
• Unit-to-Unit Tracking: Typically ± 0.3 dB or better
• Output Polarity: Negative (default); Option 103 provides positive output
• Input Connector: 2.4 mm male
• Output Connector: SMC male
• Weight: 9.1 grams

– Key Features

• PDB diodes exhibit maximum 3% square-law response variation from 2 to 18 GHz, compared to 9.5% for Schottky detectors
• Superior square-law linearity versus point-contact or Schottky designs
• Option 102 adds external square-law load with ± 0.5 dB ideal square-law deviation
• Temperature-stable frequency response
• High electrostatic discharge resistance

– Typical Applications

• Signal monitoring and power control
• Automated RF and microwave test systems
• Radar and satellite testing
• Wireless communications measurements
• Microwave backhaul characterization