The Wiltron 3635B is a millimeter-wave test set that extends the Wiltron 360B Vector Network Analyzer into the millimeter-wave frequency domain. It characterizes transmission and reflection properties of RF and microwave components operating at 75 GHz to 110 GHz, where coaxial measurement techniques prove insufficient. The 3635B delivers precision measurements of magnitude, phase, and group delay with automatic 12-term vector error correction for accurate device characterization.
Technical Specifications
• Frequency Range: 75 GHz to 110 GHz
• Measurement Capabilities: Complex transmission and reflection characteristics of two-port devices; magnitude, phase, and group delay with error-corrected measurements
• Error Correction: Automatic 12-term vector error correction
• Port 1 Power: +3 dBm (typical)
• Port 2 Maximum Signal: +20 dBm (general order of magnitude)
• Dynamic Range: Exceeds 100 dB
• Calibration Method: LRL (Line-Reflect-Line) calibration, suitable for non-insertable devices
• Dispersion Compensation: Selectable—Coaxial, Waveguide, or Microstrip
• Reference Plane: Selectable as Middle of line 1 or Ends of line 1
– Key Features
• Integrates with Wiltron 360B VNA mainframe for extended frequency coverage
• Utilizes 3640 and 3641 Series modules for 33 GHz to 110 GHz operation
• Includes tripler assemblies for millimeter-wave frequency generation
• Supports multiple calibration kits for different connector types (SMA, GPC-7)
• Modular architecture with individual PCBs and RF components
– Typical Applications
• Characterization of millimeter-wave passive and active components
• Two-port network parameter measurements at frequencies above 75 GHz
• High-frequency component validation in automotive radar, 5G, and satellite systems
• Transmission line and waveguide characterization
– Compatibility & Integration
The 3635B operates as a dedicated test set within the Wiltron 360B VNA system ecosystem. It interfaces directly with the 360B mainframe and accommodates waveguide connections typical of millimeter-wave applications. Integration with 3640 and 3641 Series modules enables seamless frequency extension to 110 GHz.
