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Anritsu signal analyzer provides MATLAB link

Posted: 24 May 2004 ?? ?Print Version ?Bookmark and Share

Keywords:anritsu? signal analyzer? matlab? development tool? mathworks?

Communications test equipment vendor Anritsu is jumping into the high-end signal analyzer fray with the release of an instrument that provides a direct link to the popular MATLAB development tool from The MathWorks. MATLAB does numerical computations with matrices and vectors, and displays information graphically.

Signal analyzers are vital tools for wireless developers. They combine a spectrum analyzer for measuring system performance in the frequency domain, with a vector signal analyzer (VSA) for measuring signals in the modulation domain.

Analyzer vs VSA tradeoffs

The problem with these instruments, however, is that in order to combine testing capabilities, you would either have to tradeoff spectrum analyzer or VSA performance. By starting from scratch and by developing custom microwave circuits, Anritsu is hoping to take that tradeoff away with the release of its Signature signal analyzer family.

The Signature instruments are Windows XP-based test boxes with a 100Hz to 8GHz operating frequency range. These test instruments also provide an optional 30MHz resolution bandwidth for capturing, measuring, and analyzing wide-modulation signals.

During the development of the Signature, Anritsu implemented a homegrown 9.5GHz to 17.5GHz synthesized first LO (local oscillator), and a 9.5GHz IF strip. This fundamental mixing approach permits the entire 100Hz to 8GHz frequency range to be measured in one sweep - without band-switching or pre-selection.

The mixing approach also lets a Signature family member deliver a 23dBm third-order intercept (TOI) point, with less than a -147dBm displayed average noise level. The instruments in the family also sport a typical amplitude accuracy of better than 0.65dB over the entire frequency range.

Digital modulation analysis

For digital modulation analysis, a Signature box provides optional measurements for error vector magnitude (EVM), carrier leakage, and I/Q imbalance. The signal analyzer also offers better than 80dB wideband CDMA (W-CDMA) adjacent channel power ratio (ACPR), and 2 percent error vector magnitude.

To support new or proprietary digital modulation schemes, Anritsu is offering a MATLAB connectivity Option for its Signature products. The option supports live update viewing of MATLAB-processed results with measurements.

The first member of the signature family, dubbed the Model MS2781A, will be available 16 weeks after receipt of order for about $49,500. The 30MHz IF bandwidth option is priced at about $27,000. The MATLAB option is available for $1,000.

- Alex Mendelsohn


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