Keysight N9020B MXA Signal Analyzer: The benchmark of RF performance in the millimeter-wave era, redefining measurement accuracy and efficiency.
2025-08-07
At the cutting-edge R&D of 5G NR FR2, satellite communications, radar systems and high-speed interconnects, engineers are facingmillimeter-wave signal analysis, ultra-wideband modulation analysis, and faint spurious captureextreme challenges — traditional spectrum analyzers are often limited in terms of dynamic range, phase noise and test speed.Keysight N9020B MXA Signal Analyzerwith 44 GHz bandwidth, -172 dBm DANL, <0.4 dB amplitude accuracyits top-tier performance, combined with Real-Time Spectrum Analysis (RTSA) and AI-aided diagnosis, makes it the ultimate tool for high-end RF verification!
Disruptive Performance: Breaking Through the Physical Limits of RF Testing
| Parameter | N9020B MXA | Typical Value of Competitors | User Benefits |
|---|---|---|---|
| Frequency Range | 2 Hz ~ 44 GHz | ≤ 44 GHz | Covers all scenarios from Sub-6G to millimeter wave |
| Displayed Average Noise Level | -172 dBm (Preamp ON) | -166 dBm | Captures weak downlink signals from space communications |
| Phase Noise | -140 dBc/Hz @1 GHz, 20 kHz | -132 dBc/Hz | Improves radar target resolution by 30% |
| TOI Dynamic Range | >75 dB | <70 dB | Enables distortion-free analysis of 5G Massive MIMO intermodulation |
| Amplitude Accuracy | ±0.4 dB | ±0.8 dB | Ensure consistency between OTA test and simulation |
Three Core Technical Architectures
1. Ultra-low Phase Noise Local Oscillator System
Yttrium Iron Garnet (YIG) Oscillator + Phase-Locked Loop Optimization: It reaches -142 dBc/Hz at 10 kHz offset from 1 GHz carrier, which meets the 64QAM/256QAM EVM test requirements.
Near-end Noise Cancellation Algorithm: Compensate local oscillator phase jitter in real time to improve measurement stability in millimeter wave frequency band.
2. Real-Time Spectrum Analysis (RTSA)
100% probability of intercept: Captures <3 μs transient signals (such as radar pulses, Bluetooth frequency hopping) under 160 MHz real-time bandwidth.
Digital phosphor display: 3D color maps signal occurrence probability for rapid identification of intermittent interference (Figure 1).
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[Figure 1] Example of Real-time Spectrogram Frequency ---> |████ ████ | - Continuous Signal | █ █ | - Intermittent Interference | ▄█▄█▄ | - Transient Pulse Time ↓
3. AI-assisted Fault Diagnosis (Option N9020B-AIJ)
Intelligent Spectrum Feature Library: Automatically matches over 1000 interference modes (clock harmonics, switching power supply ripple, intermodulation products).
Root Cause Analysis Report:
2.45 GHz spurious emission detected
Matched Feature: Wi-Fi 6E channel leakage (98.7% confidence)
Recommendation: Check filter out-of-band rejection @CH144
Practical Millimeter-Wave Application Cases
▶ 5G NR FR2 Terminal Mass Production Testing
Challenge: Strict specifications of EVM<1.8% and ACP <-35 dBc in 28/39 GHz frequency bands
N9020B Solution:
Option UXA 5G NR FR2: Supports 400 MHz analysis bandwidth, one-key measurement of EVM/ACLR/SEM
Multi-channel MIMO Parallel Testing: Synchronous control of 8 MXAs via N9042B multi-unit synchronization module, 5x improvement in test efficiency
OTA Anechoic Chamber Integration: Probe calibration up to 44 GHz, path loss compensation of ±0.1 dB
▶ Satellite Ka-band Payload Verification
Challenge: In-band spurious emission test of a 36 GHz transponder with -110 dBm input power
Solution Highlights:
DANL -172 dBm: Direct observation of -150 dBc spurious emission without turning off the carrier
Phase Noise Template Test: Automatic compliance judgment for 10 kHz~1 MHz carrier offset (compliant with ITU-R SM.329 standard)
▶ 77 GHz Automotive Radar Anti-Interference Testing
Challenge: Missing detection caused by co-channel interference between multiple radars in multi-vehicle scenarios
RTSA Solution:
Capture FMCW frequency modulation periods with 80 MHz real-time bandwidth
Interference Simulation Engine: Inject Doppler shift signals to test the limit of radar anti-interference algorithms
Modular Expansion: From Basic Test to System Integration
| Option | Function | Key Applications |
|---|---|---|
| N9020B-401 | 160 MHz Real-time Spectrum Analysis | Frequency Hopping System / Burst Signal Diagnosis |
| N9020B-BF1 | Beamforming Test Suite | 5G Massive MIMO Array Calibration |
| N9020B-P05 | Phase Noise Analysis (up to 50 GHz) | Radar Local Oscillator Stability Verification |
| N9020B-SMC | Pulse Measurement (Rising Edge/Pulse Width/Duty Cycle) | Military Radar Parameter Verification |
Intelligent Software Ecosystem
PathWave X-Series:
One-touch Test Template: Preloaded 5G/802.11ax/Wi-Fi 7 standard test items, automatic report generation
Remote Collaboration: Control instruments via Web UI and share real-time spectrum display
SignalVu-PC:
Import raw IQ data into PC for 256 GB deep memory signal playback (e.g. capture 24-hour satellite telemetry)