Agilent / Keysight E4446A 44GHz PSA Spectrum Analyzer

The Keysight E4446A is a 44 GHz PSA Spectrum Analyzer engineered for precise RF, microwave, and millimeter-wave signal analysis. This instrument delivers absolute amplitude accuracy of ±0.19 dB and a displayed average noise level of –155 dBm, enabling detection and characterization of low-level signals across demanding aerospace, defense, and communications applications. The analyzer combines an all-digital IF section with an accurate internal reference to ensure measurement integrity across its entire frequency range.

Technical Specifications

• 3 Hz to 44 GHz (base configuration)


• Extends to 110 GHz with Agilent external mixers; 325 GHz with third-party mixers Amplitude Performance


• Absolute amplitude accuracy: ±0.19 dB


• Frequency response flatness: ±0.11 dB


• W-CDMA ACLR dynamic range: 81 dB; typical dynamic range: 78 dB


• Displayed average noise level: –155 dBm, –154 dBm


• Phase noise: –118 dBc/Hz at 10 kHz offset Resolution Bandwidth


• Range: 1 Hz to 3 MHz (10% steps), plus 4, 5, 6, 8 MHz


• 160 total settings available


• Selectivity (–60 dB/–3 dB): 4.1:1 nominal Analysis Bandwidth


• 40 MHz standard; 80 MHz with Option 122 or 140


• 80 MHz digitizer available Measurement Modes


• Swept and FFT measurement modes


• FFT optimized for narrow-span measurements and low-level spur detection

Key Features

• 2 dB step attenuator with flexible resolution bandwidth customization


• Bandwidth accuracy specifications from 1 Hz to 1.5 MHz (±2% nominal for –3.01 dB bandwidth)


• EMI bandwidth options: CISPR-compliant (200 Hz, 9 kHz, 120 kHz, 1 MHz) and MIL STD 461E-compliant (10 Hz to 1 MHz)


• Built-in measurement personalities for channel power, occupied bandwidth, adjacent channel power (ACP), multi-carrier ACP, CCDF statistics, harmonic distortion, burst power, TOI, and spurious emissions


• Format-based setups for IS-95A, J-STD-008, GSM/EDGE, W-CDMA, cdma2000, Bluetooth, TETRA, and 802.11 standards

Optional Capabilities

• Phase noise measurement personality


• Digital demodulation hardware (B7J option)


• Spectrum emission mask analysis


• Programming code compatibility suite