New VNA test cables designed to mitigate phase change over 75,000 flexure cycles

A new line of ruggedized phase-stable VNA test cables operating up to 40GHz has been introduced by Pasternack. The cables are specially designed to withstand the rigours of test lab use and production testing for 50ohm communications systems.

The cables can be ordered with male or female versions of SMA or Type-N connectors for cables operating to 18GHz, 2.92mm connectors for cables operating to 26.5GHz or 2.4mm connectors for test cables performing up to 40GHz. Torsion resistant connector heads are directly attached to stainless steel conduit style armouring providing a rugged design for up to 5,000 mating cycles with proper care. The cable's armouring enhances amplitude and phase stability by preventing stress due to over bending while maintaining the flexibility required for testing in a lab environment.

The VNA test cables have a maximum phase change of +/-2 degrees at 18GHz, +/-3 degrees at 26.5GHz and +/-5 degrees at 40GHz with typical calibration procedures. Minimal phase change is essential because amplitude and phase variation following VNA calibration can cause inaccurate S Parameter measurements. As a result, amplitude and phase stable cables are needed to make accurate Vector Network Analyzer measurements. The amplitude and phase-stable ruggedized VNA test cables provide the reliable and repeatable, accurate test results users require. Says the company.

"Our new VNA test cables provide industry-leading performance up to 40GHz," said Steve Ellis, interconnect product manager, Pasternack. "These test cables are rated to 5,000 mating cycles and 75,000 flexure cycles while still exhibiting excellent amplitude and phase stability to the given frequency."