what's the difference of vector/scalar network analyzer?

[pigkiller]

furthermore,what's the nonlinear network analyzer?

 

[flatulent]

Both types measure the two port parameters. The vector type gives you magnitude and phase. The scalar is just magnitude.

I have never heard of a nonlinear network analyzer.

 

[Element_115]

A Scalar Analyzer is kind of like a sweepped Spectrum Analyzer
with a S11 read out(you can see gain or Power but don't trust the
power reading use a power meter), and the VNA gives all
S-Parameters. This just a basic explanation

Hope this helps

 

[eladg]

furthermore,what's the nonlinear network analyzer?

The scalar is just magnitude so u can not mesure phas and it is less aqurde ( .

 

[buta]

Some Scalar analyzers use power sensors to measure the magnitude. The power sensor usually measures the total power of the whole spectrum (including fundamental signal and its higher order components)

 

[AL0117]

There is a nice appnote on the @gilent test and measurement site (replace @ with a), it describes the principles of operation

**broken link removed**

The NA-s could be scalar and vector types, but the detection modes also could be wide band (diode) and narrow band (tuned receiver).

I have at my work a scalar network analyser with wide band diode detector, and some times it gives me a lot of headache due to the wide band nature of the detector(especially when I am testing filters): it is very sensitive to the harmonic content of the sweep generator.

Regards, Al

 

[boy]

Nonlinear network analyzer can give you also the amplitude and phase of the harmonic which is generated by the nonlinear circuit.

 

[flyhigh]

I was at Agilent workshop last year when they presented nonlinear/ large S par NA. Nonlinear NA is for the moment in development phase, it is not a piece of equipment but a number of instruments, including a standard NA, harmonic tuners etc. You can measure, as stated above, a complete nonlinear behaviour of your device. Results shown are quite promising for accurate prediction e.g. of PA performance concerning IMD and other nonlinear parameters. It is quite a procedure to use, a simple measurement is a whole day exersise including very complicated callibration. Even a mesured data interpretation is not straight forward, Agilent can do it for you as a service.

flyhigh

 

[hyuang]

NVA can measure the all phase parameter