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ispassive - Check passivity of N-port S-parameters

Syntax

[result, index_non_passive] = ispassive(s_params)

Description

[result, index_non_passive] = ispassive(s_params) checks the passivity of sparams, an array of N-port S-parameters. If all the S-parameters are passive, ispassive sets result equal to 1 (true). Otherwise, result is equal to 0 (false). index_non_passive is a vector of indices corresponding to the non-passive S-parameters in sparams. If result is true, index_non_passive is empty.

Examples

Check the passivity of an S-parameters array; separate non-passive S-parameters into a new array:

%Read a Touchstone data file
ckt = read(rfckt.passive, 'passive.s2p')
%Check the passivity
data = ckt.AnalyzedResult
[result, index] = ispassive(data.S_Parameters);
%Get the non-passive S-parameters
if ~(result)
     AllNonPassiveSparams = data.S_Parameters(:,:,index);
     FirstNonPassiveSparams = AllNonPassiveSparams(:,:,1)
end

ispassive - Check passivity of N-port S-parameters

Syntax

Description

Examples

See Also

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