Modular two-port VNAs that combine performance and ease of use

Anritsu Company introduces the ShockLine ME7869A distributed modular two-port VNAs that can execute long-distance full vector S-parameter measurements over wide distances of up to 100m. Three models – operating up to 8GHz, 20GHz, and 43.5GHz, respectively – supply unprecedented cost-efficiency, flexibility, and ease of use to various existing and emerging commercial and defence antenna design applications.

The device is configured with two MS46131A one-port VNAs that can each be directly connected to the AUT. The cable length for each VNA module may be equal or different, depending on the application. It removes the necessity for long RF coaxial cables that produce high loss and phase and magnitude instability. The unique design meets the requirement to accurately and repeatably measure antennas over long distances, such as in anechoic chambers and antenna test ranges.

The company's PhaseLync synchronisation technology enables two MS46131A VNAs to phase synchronise with each other over the full 100m distance. PhaseLync improves the dynamic range and measurement stability of S-parameter measurements by removing the necessity for long cables required with conventional benchtop VNAs.

Another key benefit of the distributed modular VNA solution is the MN25132A control module, which significantly streamlines installation. It acts as a junction for the cables and supplies power to the two VNAs. There is no necessity to attach separate power supplies to the two VNA heads. The control module also interfaces the two VNAs to a laptop configured with ShockLine software.

The device brings performance, cost, and simplicity benefits to any insertion loss application that needs long cable runs at frequencies up to 43.5GHz compared to alternative costly benchtop VNAs that need superior dynamic range. The device can be used in satellite, materials measurement, aerospace and defence, and signal integrity environments.