The Agilent/Keysight E4446A is a high-performance spectrum analyzer for RF, microwave, and millimeter-wave signal analysis up to 44 GHz. Built for aerospace, defense, telecommunications, and research environments, it delivers signal characterization across a wide frequency span with precise amplitude accuracy, low noise floor, and excellent phase noise performance.
– Technical Specifications
Frequency Coverage
• 3 Hz to 44 GHz (DC coupled)
• Up to 325 GHz with external mixers
Frequency Reference & Accuracy
• Aging rate: ±1 × 10⁻⁸/year (typically ±1 × 10⁻⁷/year)
• Temperature stability: ±1 × 10⁻⁸ (20–30 °C), ±5 × 10⁻⁸ (0–55 °C)
• Initial calibration accuracy: ±7 × 10⁻⁸
• Marker frequency counter accuracy: ±(marker frequency × frequency reference accuracy + 0.100 Hz)
• Delta counter accuracy: ±(delta frequency × frequency reference accuracy + 0.141 Hz)
• Counter resolution: 0.001 Hz
Resolution Bandwidth (RBW)
• Range: 1 Hz to 3 MHz (10% steps), plus 4, 5, 6, 8 MHz
• Bandwidth accuracy: ±0.5% to ±1.5% depending on frequency range
Video Bandwidth (VBW)
• Range: 1 Hz to 3 MHz (10% steps), plus 4, 5, 6, 8 MHz and wide open
• Accuracy: ±6% nominal
Frequency Span
• 0 Hz (zero span) to maximum frequency
• Resolution: 2 Hz
• Accuracy: ±[0.2% × span + span/(sweep points – 1)]
Sweep Configuration
• Sweep points: 101 to 8192
• Gated sweep gate length: 10 µs to 500 ms
• Gated sweep delay range: 0 to 500 ms
• Gate delay jitter: 33.3 ns p-p nominal
• Gated FFT delay range: –150 to +500 ms with 100 ns resolution
Amplitude Performance
• Displayed average noise level (DANL): typically –154 dBm/Hz
– Key Features
• Swept and FFT analysis modes with independent span and RBW control
• Gated measurement capability for time-domain signal isolation
• Precise marker frequency counter with 0.001 Hz resolution
• Ultra-low noise floor and stable frequency reference for sensitive applications
– Typical Applications
• RF/microwave component characterization and troubleshooting
• Aerospace and defense signal analysis
• Telecommunications system validation
• Research and development testing
– Compatibility & Integration
External mixer support extends analysis capability to 325 GHz.
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