Agilent/Keysight E4447A

The Keysight E4447A is a spectrum analyzer that measures and monitors complex RF, microwave, and millimeter-wave signals from 3 Hz to 42.98 GHz. Part of the PSA series, it delivers an all-digital IF architecture with precise internal frequency reference and automatic alignment. The instrument combines exceptional noise floor performance, amplitude accuracy, and phase noise characteristics with flexible resolution and video bandwidth settings.

Optional external mixing extends measurement capability to 325 GHz, enabling coverage across millimeter-wave and submillimeter-wave bands. Engineers in cellular communications, aerospace, and defense rely on the E4447A for R&D validation and manufacturing test, where its dynamic range, analysis bandwidth, and modulation analysis personalities accelerate signal characterization workflows.

Technical Specifications

• Frequency range: 3 Hz to 42.98 GHz (DC coupled); 20 MHz to 42.98 GHz (AC coupled)


• Displayed average noise level: -154 dBm


• Absolute amplitude accuracy: ±0.19 dB


• Phase noise: -118 dBc/Hz at 10 kHz offset


• W-CDMA ACLR dynamic range: 81 dB


• Resolution bandwidth: 1 Hz to 3 MHz in 10% steps; 4, 5, 6, 8 MHz; wide open


• Video bandwidth: 1 Hz to 3 MHz in 10% steps; 4, 5, 6, 8 MHz; wide open


• External mixing: Extends measurement to 325 GHz

Key Features

• All-digital IF section for superior measurement fidelity


• 2 dB step attenuator for dynamic range optimization


• Supports up to 16 optional measurement personalities


• Flexible analysis bandwidth and RBW settings for speed/selectivity trade-offs


• Internal power supply with standard and optional rackmount/handle configurations

Typical Applications

• Cellular and wireless signal characterization


• Aerospace and defense RF/microwave testing


• Phase noise and noise figure measurement


• Digital modulation analysis


• EMC/EMI compliance assessment

Compatibility & Integration

• Measurement personalities: Noise figure (Option 219), phase noise (Option 226), measuring receiver (Option 233), EMC (Option 239), flexible digital modulation (Option 241), CDMA2000 (Option B78)


• External source control: Option 215


• USB device I/O: Option 111


• External mixing: Option AYZ for signals up to 325 GHz