The Anritsu MS4640B VectorStar is a high-performance vector network analyzer engineered for precision S-parameter measurements spanning RF, microwave, and millimeter-wave frequencies. It delivers measurement speeds as fast as 20 µs per data point with dynamic range up to 142 dB, making it suitable for demanding device characterization, filter validation, and component testing across multiple frequency bands.
## Technical Specifications
**Frequency Coverage**
• Base models: 10 MHz to 20 GHz (MS4642B), 10 MHz to 40 GHz (MS4644B), 10 MHz to 50 GHz (MS4645B), 10 MHz to 70 GHz (MS4647B)
• Optional low-end extension: 70 kHz available on all base models
• Extended broadband configurations: 70 kHz to 110 GHz (ME7838E) or 70 kHz to 145 GHz (ME7838D)
• mmWave module capability: Up to 1.1 THz (1100 GHz)
**Measurement Performance**
• Source power: +12 dBm standard, +14 dBm high available power
• Receiver compression point: +15 dBm at 70 GHz
• Test port directivity: Up to 50 dB
• Source and load match: Up to 50 dB each
• Graph points: Up to 100,000
**Port Configuration**
• Standard: 2 ports
• Expandable to 4 ports with MN4694C (to 40 GHz) or MN4697C (to 70 GHz)
## Key Features
• **PulseView™:** 2.5 ns pulse resolution with 100 dB dynamic range for real-time pulse characterization
• **DifferentialView™:** Simultaneous 4-port single-ended or balanced measurements with True Mode Stimulus capability
• **Noise Figure Measurement (Option MS4640B-041):** Cold source technique from 70 kHz to 125 GHz
• **Time Domain Analysis (Option MS4640B-002):** Enhanced accuracy for impulse and time-domain characterization
• **IMDView™:** Active real-time intermodulation distortion measurement with internal combiner option for seamless S-parameter/IMD switching
• **Spectrum Analyzer (Option 49):** Single-sweep spectral analysis from 70 kHz to 220 GHz using mm-wave modules
• **Calibration:** Automatic via external modules or manual; Precision AutoCal™ units supported
## Typical Applications
Component characterization, device validation, filter and amplifier measurement, transmission line analysis, differential signaling networks, and high-frequency material property extraction.
## Compatibility & Integration
Universal Fixture Extraction (UFX) software enables advanced fixture de-embedding and network transformation. Compatible with precision calibration modules and external mmWave measurement accessories.
