MVG adds FPGA timing unit for RF testing

MVG has developed an FPGA-based Pulse Synch Unit for RF and antenna measurement systems, providing high-speed timing, trigger, and synchronisation control across complex test environments.

The unit is designed to coordinate multiple devices in antenna measurement ranges, active phased-array calibration, radar cross-section testing, payload validation, and automated RF test systems. An integrated FPGA acts as the master control unit, generating high-speed LVDS pulse chains with signal-edge resolution of around 2.5ns.

Four independent RJ45 output ports are provided, each supporting four synchronised pulse chains for a total of 16 outputs. Standard shielded CAT5 cabling connects peripheral boards, where signals are converted to TTL. The system also includes optically isolated RJ45 channels, a 26-pin high-density D-sub connector with 16 I/O channels, Ethernet TCP/IP, USB-C, and 24V DC input.

As RF systems become more distributed and software-defined, measurement quality increasingly depends on coordination between instruments rather than on standalone instrument performance alone. Signal generators, switching matrices, positioners, receivers, motion systems, and acquisition hardware must operate in tightly controlled sequences when measuring active antennas, radar assemblies, or payload subsystems.

Test environments for phased-array and electronically steered systems place particular pressure on timing. Phase, amplitude, switching state, beam direction, and receive-chain configuration may all need to be aligned during a measurement cycle. Loose trigger arrangements can introduce uncertainty, especially where the system under test changes state rapidly or where multiple channels must be observed together.

Automation is also changing the shape of RF measurement. The use of AI-assisted vector network analysis and high-performance direct-RF FPGA platforms such as Altera’s Agilex 9 family shows how measurement and signal-processing workflows are becoming more programmable. MVG’s unit sits at the timing layer of that shift, providing deterministic pulse control for test setups that are no longer built around a single instrument.

Aerospace and defence systems are among the most demanding applications for this type of synchronisation. Modern radar, electronic warfare, satellite payload, and antenna systems rely on active arrays, digital beamforming, wideband receivers, and highly agile RF front ends. Testing those systems requires repeatability across multiple operating states, with measurements aligned tightly enough to support calibration, qualification, and fault diagnosis.

The same pressure is visible in contested-spectrum work, where programmes such as CRENIC’s UK electronic warfare testing activity are placing more emphasis on controlled RF environments. Although MVG’s Pulse Synch Unit is a test-system component rather than an electronic warfare product, the underlying need is shared: accurate RF measurement depends on timing discipline as much as on frequency coverage or dynamic range.

Production and qualification teams also face practical bottlenecks. Anechoic chambers, compact antenna test ranges, and specialised RF instrumentation are expensive assets, and unreliable setups can consume valuable test time. A dedicated timing unit can improve repeatability, shorten configuration work, and support more consistent automated test routines across development and manufacturing.

MVG’s release reflects a broader movement from instrument-centred RF testing towards coordinated measurement ecosystems. As antenna systems become more active, adaptive, and integrated, timing and trigger control will have a larger influence on whether test results are accurate, repeatable, and useful beyond the laboratory setup in which they were captured.