M9484C VXG Vector Signal Generator
Manufacturers
Keysight
Other Recommendations
54GHz Vector Signal Generator, 2.5GHz Bandwidth, 8-Virtual-Signal Emulation for 5G/Satellite Communications
📡54GHz
Extendable to 110GHz with V3080A (Source: Input description)
📊5GHz
2.5GHz/channel (5GHz with bonding) (Source: Input description)
🎛️8x
Per RF channel (World's first) (Source: Input description)
| Parameter | Specification | Application Value |
|---|---|---|
| Frequency Coverage | 54GHz (110GHz with extender), V/W-band support | Tests satellite communications (Q/V-band) and 5G mmWave FR2+ |
| Signal Emulation | 8-virtual-signal emulation per RF channel | Simulates complex multi-user scenarios in single test setup |
| Channel Synchronization | Up to 4 phase-coherent channels/instrument (32+ with multi-unit) | Enables massive MIMO testing for 5G base stations |
Core Application Scenarios
5G NR Base Station Conformance — Real-time fading for 3GPP compliance testing (Based on software support)
Satellite Payload Verification — V/W-band signal generation for LEO/GEO satellite systems (Based on frequency coverage)
Technical Deep Dive
Multi-Channel Signal Engine
Features "Wideband DAC + Phase-Coherent Multi-Channel Core" design: 2.5GHz baseband bandwidth supports 5G NR 1600MHz carriers (Source: Bandwidth spec). FPGA-based virtual signal engine generates 8 independent signal streams per RF channel, simulating multi-user/multi-path environments. Integrated V3080A extender enables W-band satellite testing (75-110GHz). PathWave software provides 3GPP-compliant waveforms with real-time fading models for conformance testing.
| Technical Dimension | M9484C VXG | Traditional VSG | Advantage |
|---|---|---|---|
| Test Complexity | 8-virtual-signal emulation per RF channel | 1-2 signals per channel typical | Reduces multi-user test setup complexity by 75% |
| Frequency Scalability | 54GHz native → 110GHz with extender | ≤40GHz typical, external converters required for mmWave | Eliminates 3dB conversion loss for satellite payload testing |
5G Massive MIMO Base Station Test Workflow
Configuration:
- Connect 4 synchronized channels to 64-antenna array
- Load 3GPP 5G NR FR2 waveform (800MHz bandwidth)
- Enable 8-virtual-signal emulation per channel (32 virtual users)Testing:
- Apply real-time fading models for urban macrocell scenario
- Measure beamforming gain at 28GHz (>25dB target)
- Verify EVM <3% for 256QAM signals under fading conditionsAnalysis: Generate conformance report with ACPR (-45dBc), phase noise (-100dBc/Hz@100kHz), and throughput metrics
Phase Noise Boundary
Phase noise increases by 6dB at 54GHz vs 6GHz (Based on oscillator design). Mitigation: ① Use internal pre-correction algorithms for EVM-critical applications; ② For ultra-low phase noise requirements (<-110dBc/Hz), enable external reference clock input.
