VNA covers single sweep NF measurements over 70 kHz to 125 GHz, extends coverage to 750 GHz: Page 2 of 3

July 04, 2012 // By Jean-Pierre Joosting
Anritsu Company has introduced noise figure measurement capability for its VectorStar MS4640A and ME7838A Vector Network Analyzers (VNAs). Option MS4640A-041 equips VectorStar with 70 kHz to 125 GHz noise figure measurement, enabled in part by a unique receiver optimized for measurements from 30 GHz to 125 GHz.
differential millimeter-wave (mm-wave) component development. Featuring best-in-class stability and power level control, as well as frequency coverage of 70 kHz to 110 GHz in a compact design, the ME7838A offers R&D engineers a highly accurate test tool that reduces measurement times, controls cost-of-test, and helps improve time to market.

The ME7838A broadband VNA system utilizes an advanced design that eliminates the need for large, heavy mm-wave modules and coax combiners. This design allows the ME7838A to be mounted on a smaller probe station using standard positioners. Direct connections to the probes can be achieved in a 2 port configuration due to the design, further reducing space requirements, while eliminating high-frequency cable loss and improving the system’s raw directivity. In a 4 port system the compact size of the mm-wave modules means short RF cables can be used to provide best available dynamic range and performance. Because of this, the ME7838A delivers industry-best stability and longer measurement cycles between calibrations.

The system configuration includes the MS4640A VectorStar and 3739A test set, which operates the mm-wave modules. In addition to claiming the widest broadband frequency coverage, the ME7838A system also claims best-in-class RF performance, due to a real-time power leveling control that provides the best power accuracy and stability to power levels as low as -55 dBm. The system has industry-best dynamic range of 108 dB at 65 GHz and 107 dB at 110 GHz, and the fastest measurement speed of 55 ms for 201 points at 10 kHz IFBW.

Millimeter-ranges to 750 GHz.

A 4-port configuration for the ME7838A VectorStar VNA extends the measurement system’s capability to 750 GHz and higher. Incorporating a number of design features that result in high performance, the ME7838A provides R&D engineers designing 4-port or differential millimeter-wave (mm-wave) components with the ability to sweep power across a wide range at frequencies up to 750 GHz using external mm-wave modules without the need for manual attenuators.

The VectorStar ME7838A

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