Active scattering parameter matrix.
Active scattering parameters are simply inverted s-parameters, defined as a = 1/s. Useful in analysis of active networks. The a-matrix is a 3-dimensional
numpy.ndarraywhich has shape fxnxn, where f is frequency axis and n is number of ports. Note that indexing starts at 0, so a11 can be accessed by taking the slice a[:,0,0].
Returns: a – the active scattering parameter matrix. Return type: complex
numpy.ndarrayof shape fxnxn