The Anritsu ME7838D4 VectorStar is a 4-port broadband vector network analyzer engineered for precise characterization of microwave and millimeter-wave components across frequencies from 70 kHz to 145 GHz, with operational capability extending to 150 GHz. Millimeter-waveguide configurations reach 1.1 THz. The system delivers 109 dB dynamic range at 110 GHz and 102 dB at 220 GHz, with stability of 0.1 dB over 24 hours. Four-port architecture enables complex device and component testing in R&D, manufacturing, and quality control environments.
## Technical Specifications
**Frequency Coverage:**
• Broadband system: 70 kHz to 145 GHz (40 kHz to 150 GHz operational)
• Millimeter-waveguide system: 50 GHz to 1.1 THz
• Banded millimeter-wave configurations: up to 1.1 THz
**Dynamic Range:**
• 109 dB at 110 GHz
• 102 dB at 220 GHz
**Stability:**
• 0.1 dB over 24 hours at 25°C
• S21 phase stability: typically better than 1 degree over 24 hours
## Key Features
**Broadband Single Sweep:** Extends from 70 kHz for enhanced low-end frequency response, enabling improved device modeling and DC extrapolation across the full measurement range.
**Millimeter-Wave Performance:** Incorporates Nonlinear Transmission Line (NLTL) technology in compact, lightweight mmWave modules optimized for wafer probe station integration. Positive raw directivity across multiple bands provides enhanced calibration stability.
**Advanced Measurement Modes:** Supports noise figure measurements to 125 GHz using the 3744x-Rx receiver, with optimized noise performance from 30 GHz to 125 GHz. Differential noise figure option available. Spectrum analyzer capability—world’s first single-sweep implementation—covers 70 kHz to 220 GHz using mm-wave modules for harmonic, spur, and distortion product analysis. Supports 4-port single-ended and balanced differential measurements.
## System Architecture
Multiport broadband configuration pairs MS4647A or MS4647B VNA (with Option 007 and Option 08x) with MN4697C multiport test set, 3736B and 3739C broadband test sets, and four MA25300A mmWave modules. Multiport banded systems integrate MS464xA/B VNA with MN4694C multiport test set and 3736B/3739C broadband test sets paired with four 3744A-EE, 3744A-EW, or OML/VDI mmWave modules.
## Typical Applications
Component and device characterization across microwave and millimeter-wave frequencies; on-wafer measurements; noise figure analysis; harmonic and distortion product identification.
