The Keysight 8471E is a planar-doped barrier diode detector engineered for RF and microwave signal detection from 0.01 GHz to 12 GHz. Built on proven PDB diode technology, this detector delivers stable, consistent performance across a broad frequency spectrum. It excels in leveling loops, power monitoring, and wideband video detection applications where precision and reliability are essential.
Technical Specifications
Frequency Range: 0.01 GHz to 12 GHz (10 MHz to 12 GHz)
Frequency Response:
• ±0.23 dB to 4 GHz
• ±0.6 dB to 8 GHz
• ±0.85 dB to 12 GHz
Maximum SWR (Standing Wave Ratio):
• 1.2 to 4 GHz
• 1.7 to 8 GHz
• 2.4 to 12 GHz
Power Handling:
• Maximum operating input power: 200 mW
• Typical short-term maximum input power (< 1 minute): 0.7 W
Electrical Characteristics:
• Low-level sensitivity: Greater than 0.5 mV/µW
• Diode video impedance (RV): Approximately 1.5 kΩ at 25 °C and Pin ≤ –20 dBm
• RF bypass capacitor (CB): Approximately 30 pF nominal
• Output polarity: Negative (standard); positive polarity available with option 103
Connectors:
• Input: SMA male
• Output: SMC male
– Key Features
• Wideband operation spanning three octaves enables multi-band measurement without detector switching
• Predictable frequency response ensures accurate signal quantification across the entire operating range
• Low-cost design without performance compromise
– Typical Applications
• Leveling loops in RF instrumentation
• Power monitoring in microwave systems
• Wideband video detection
– Compatibility & Integration
The 8471E integrates into Keysight RF and microwave instrumentation ecosystems and is compatible with the 8474 line of PDB detectors.
