Several Commonly Used Data Files and Their Reference Simulation in ADS

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Several Commonly Used Data Files and Their Reference Simulation in ADS [Copy link]

Several Commonly Used Data Files and Their Reference Simulation in ADS

1. .SnP file:
linear S parameter file (can also be G-, H-, Y-, and Z-parameters), n can be a number between 1 and 99. When n = 2, that is, a two-port device, noise parameters can be included.
There are two ways to generate .SnP files. One is to manually edit the text file yourself, and the other is to export and generate from existing data (which can be data obtained by ADS simulation or data obtained by testing with instruments such as network analyzers).
(1) Manual editing
Use Notepad to write the S parameters in the datasheet provided by the manufacturer in the specified format and save it as a .SnP file. Then use the SnP module in Data Items to reference the file, and then use the module as an S parameter model for circuit-level and system-level simulation. The format is as follows:
! The statements starting with __ are used as prefixes for comment statements and will be ignored when the program is running.
The definition format of the statements should be stated at the beginning of the file, including frequency unit, parameter type, data format, and normalized resistance value, with a # sign as the leading character:

For .s1p files: # [HZ/KHZ/MHZ/GHZ] [S/Y/Z] [MA/DB/RI] [R n]
For .s2p files: # [HZ/KHZ/MHZ/GHZ] [S/Y/Z/G/H] [MA/DB/RI] [R n]
For .s3p/.s4p files: # [HZ/KHZ/MHZ/GHZ] [S] [MA/DB/RI] [R n]
For example: # GHZ S MA R 50
1-port Component, Magnitude-Angle format:

(Columns: f Mag Ang)
f |S11| <S11
2-port Component, Magnitude-Angle format:

f |S11| <S11 |S21| <S21 |S12| <S12 |S22| <S22
The format of the added noise parameter is:
x1 x2 x3 x4 x5

x1 = frequency unit
x2 = minimum noise figure (dB)
x3 = source reflection coefficient to achieve minimum noise figure (MA)
x4 = phase (angle) of reflection coefficient (MA)
x5 = normalized noise resistance

For example: ! NOISE PARAMETERS
4 .7 .64 69 .38
18 2.7 .46 -33 .40
(2) Export data generation:
use the "write" command of the HP-IB control.

The reference simulation controls of the following three files are all in System-Data Models.
2. .S2D file:
small signal/large signal S parameter file, which is an S parameter file generated by the system in MDIF format. It can describe small signal data, noise data, nonlinear data and intermodulation data; it can also describe nonlinearity as a function of the drive power or the comprehensive representation of the third-order intermodulation intercept point, 1db gain compression point, saturation power, and gain compression at saturation.

3. .P2D file:
Like the .S2D file, the P2D file is also a system-generated S parameter file in MDIF format, but it is a large signal S parameter file. This file can be generated by the P2D simulator in the LSSP simulation panel, so it generates large signal S parameters related to power. This file can be used for system-level simulation after being referenced by the AMPP2D model.

4. .IMT file:
used to analyze the harmonics of the mixer. It is a table of mixing intermodulation products defined by the user and is used
for circuit simulation using the MIXERIMT2 module.