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Working with S, Y, Z Parameters<br />

Instantiating a Block Defined by X-Parameters<br />

• PIN: IP1 IN1 ... IPN INN<br />

The 2×N pins of the N-port model will be connected to nodes IP1 IN1 ... IPN INN.<br />

Description<br />

X-parameter files are identified with the .xnp extension (where n represents the number of<br />

ports). To compute accurate results, it is recommended to adapt output ports, that is, to match<br />

the port impedances with the port impedances used while generating X parameters.<br />

• Transient, SSTAC and SSTNOISE simulations are not supported.<br />

• Multi-tone extraction/simulation is not supported.<br />

• Memory effects are not supported.<br />

• X-parameter blocks do not generate noise.<br />

Eldo RF generates X-parameter data in the Generic MDIF (GMDIF) version 2.0 file format,<br />

with the .XFILE command similar to the S parameters .FFILE command. See Generating<br />

X-Parameters in the Eldo RF User’s Manual.<br />

Eldo® User's Manual, 15.3 711

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