Single sweep VNA spectrum analyser is a first, says Anritsu
A spectrum analyser option can be installed on the VectorStar vector network analyser (VNA) to create what Anritsu claimed is the first single sweep vector network analyser (VNA) spectrum analyser. The option enables it to conduct single connection VNA and spectrum-based measurements. The VectorStar has been enhanced to support 70kHz to 220GHz and can be used in a testing environment to verify active and passive devices during the design, troubleshooting, or characterisation stages.
The spectrum analyser option is compatible with all baseband VectorStar models, whether broadband or banded system configurations. Integrating VNA / spectrum analyser capability provides engineers with a means to quickly transfer a challenging VNA measurement to the spectrum analyser without changing the test setup or having to use multiple instruments. It is particularly beneficial for applications involving mixers and amplifiers, including those with multiple outputs or I/O comparisons, said Anritsu.
The VNA spectrum analyser instrument enables simultaneous, sequential S-parameter and spectrum analysis. Spectral domain measurements of harmonics, spurious, other distortion products, and general frequency content can be made with the single instrument and engineers can analyse VNA-like and spectrum analyser-like response of a device under test (DUT).
The VNA-spectrum analyser can be used for on-wafer measurements, as VectorStar is able to make a direct connection to an on-wafer device. Mounting and demounting of on-wafer devices, which can cause major errors in measurement, are therefore eliminated. Power calibration can be conducted at the probe tip for greater accuracy and repeatability.
Engineers can also use the VNA source as a stimulus and any port as a receiver for scalar measurements. Using the multiple test ports on the VNA delivers multi-channel spectrum analysis that is synchronised with the internal swept signal generators. Spectrum analysis for broadband and banded is also available with Anritsu or other millimeter (mmWave) modules.
Two configurations are available in the spectrum analyser option. The standard VNA mode supports point-based spectrum analysis for faster measurements, and is suitable for known signal analysis. For unknown signal analysis, the spectrum analyser option can be configured with a traditional sweep-based spectrum analyser.
The spectrum analyser option will be showcased at European Microwave Week 2022 in Milan (27 to 29 September) using the VectorStar ME7838G VNA. Visit Anritsu at booth B22.
