The Keysight (Agilent) E9304A is an average power sensor engineered for precise power measurements across low-frequency and RF applications from 9 kHz to 6 GHz, with optional extension to 18 GHz. Its dual-path architecture—separate low and high power measurement channels—delivers calibration factor uncertainty of 1.7% to 2.2% across the low power path and 1.8% to 3.4% across the high power path, depending on frequency and operating temperature.
The sensor measures average power from −60 dBm (1 nW) to +20 dBm (100 mW) continuously, with peak power handling to +33 dBm (2 W) for pulse widths under 10 µs. Measurement throughput reaches 400 readings per second. A Type-N male connector ensures standard RF integration. Standing wave ratio performance ranges from 1.13 to 1.20 across the operating band. On-board EEPROM stores calibration factors, linearity data, and temperature compensation coefficients for autonomous operation and traceability.
Technical Specifications
• Frequency Range: 9 kHz to 6 GHz (expandable to 18 GHz with Option H18)
• Power Range (Low Path): −60 dBm to −10 dBm
• Power Range (High Path): −10 dBm to +20 dBm
• Maximum Average Power: +25 dBm (320 mW)
• Maximum Peak Power: +33 dBm (2 W) at pulse widths < 10 µs
• Measurement Speed: Up to 400 readings per second
• Connector: Type-N (Male)
• Maximum DC Voltage Rating: 5 Vdc
• Calibration Factor Uncertainty (Low Path): 1.7% to 2.2% across all frequency bands and temperature ranges
• Calibration Factor Uncertainty (High Path): 1.8% to 3.4% across all frequency bands and temperature ranges
• SWR (9 kHz to < 2 GHz): 1.13 @ 25°C ±10°C; 1.15 @ 0°C to 55°C
• SWR (2 GHz to 6 GHz): 1.19 @ 25°C ±10°C; 1.20 @ 0°C to 55°C
– Key Features
• Dual independent measurement paths for optimal accuracy across full dynamic range
• Firmware-configurable integration with EPM, EPM-P, and P-series power meters
• On-device calibration data storage eliminates external dependency
• Temperature-compensated measurements across 0°C to 55°C operating range
– Typical Applications
• Research and development testing
• Manufacturing test and acceptance
• EMC/EMI compliance verification
– Compatibility & Integration
The E9304A integrates with Keysight EPM (N1913A/14A, E4418B/19B), EPM-P (E4416A/17A), and P-series (N1911A/12A) power meters. Specific firmware and DSP code revisions may be required for certain meter models.
