Analyzer Test Port Cables

Analyzer test port cables connect the output ports of vector network analyzers (VNAs), spectrum analyzers, and signal analyzers to the device under test or external test fixtures. These cables are engineered for phase stability, low insertion loss, and consistent electrical performance across wide frequency ranges — characteristics that are critical when the cable is included within the calibrated measurement path. Unlike general-purpose RF cables, test port cables maintain tight impedance tolerances and minimize reflections that would otherwise degrade measurement accuracy.

Available in armored and semi-flexible constructions, test port cables are designed to withstand repeated flexure in laboratory environments while maintaining their electrical characteristics. Common connector types include Type-N, SMA, 3.5 mm, 2.92 mm, and 2.4 mm, with frequency ratings up to 67 GHz for millimeter-wave VNA applications. Cable length options typically range from 0.5 m to 5 m to suit a variety of bench configurations.

Typical Applications

Extending VNA test ports to reach devices under test in fixturing and on-wafer measurement setups
Signal routing in automated test equipment (ATE) systems and RF switch matrix configurations
Microwave and millimeter-wave component characterization in R&D and production test laboratories
On-site testing of antenna systems, cables, and connectors in field deployments
Interference and pre-compliance measurements in EMC laboratory setups

Popular Brands

Anritsu manufactures a comprehensive range of test port cables for their MS46000 and VectorStar VNA series, including armored variants rated to 26.5 GHz and beyond. Keysight offers phase-matched and phase-stable cables optimized for their PNA series instruments. Rohde & Schwarz provides precision test port cables for their ZNA and ZVA VNA platforms.