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 Network Analyzers using S4VNA software

In this format, stimulus values are plotted along X-axis and the measured data are plotted along Y-axis (See figure below).

Rectangular format

Rectangular format

To display complex-valued S-parameters along the scalar Y-axis, it must be transformed into a real number. Rectangular formats involve various types of transformation of an S-parameter

,

where real part of S-parameter complex value,

imaginary part of S-parameter complex value.

There are eight types of rectangular formats depending on the measured value plotted along Y-axis (See table below).

Rectangular Formats

Format Type Description

Label

Data Type (Y-axis)

Measurement Unit (Y-axis)

Logarithmic Magnitude

Log Mag

S-parameter logarithmic magnitude: ,

Decibel (dB)

Voltage Standing Wave Ratio

SWR

Dimensionless value

Phase

Phase

S-parameter phase from –180° to +180°:

Degree (°)

Expanded Phase

Expand Phase

S-parameter phase, measurement range expanded to from below –180° to over +180°

Degree (°)

Group Delay

Group Delay

Signal propagation delay within the DUT: ,,

Second (sec.)

Linear Magnitude

Lin Mag

S-parameter linear magnitude:

Dimensionless value

Real Part

Real

S-parameter real part:

Dimensionless value

Imaginary Part

Imag

S-parameter imaginary part:

Dimensionless value

The format for each trace of the channel can be selected individually. The trace must be activated before setting the format.

Format Log Mag2

To choose a rectangular format, use the following softkey:

Format

Then select the desired format:

Logarithmic magnitude

SWR

Phase

Expanded phase

Group delay

Linear magnitude

Real part

Imaginary part

 

 

 


note

The display format can be set using the mouse (See Display Format Setting).


 

Rev.:  22.4