rfchain.cumiip3

Cascaded noise figure of the RF chain object

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Syntax

ip3val = cumiip3(obj)

Description

ip3val = cumiip3(obj) returns the cascaded input-referred third-order intercept for each stage of the RF chain object obj. The input-referred third-order intercept is calculated using the formula:

1/iip3lin(total) =  1/iip3lin(1)+g1/iip3lin(2)+(g1*g2)/iiplin(3)+.... where, iip3lin = iip3 (linear values)

example

Examples

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Open Live Script

Assign stage-by-stage values of gain, noise figure, IIP3 and stage names.

g = [11 -3 7];
nf = [25 3 5];
i3 = [19 Inf 3];
nm = {'amp1','filt1','lna1'};

Create an RF chain object.

rfch = rfchain(g,nf,'IIP3',i3,'Name',nm);

Calculate cascaded iip3 value.

iip3val = cumiip3(rfch)
iip3val = 1×3

   19.0000   19.0000   -5.0173

Input Arguments

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RF chain object, specified as an rfchain object.

Output Arguments

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Cascaded input-referred third-order intercept for RF chain object, returned as vectors. The vector length is equal to the number of stages in the RF chain object.

Version History

Introduced in R2014b

See Also

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