/// <summary>
/// Cascades (embeds) a series of <see cref="NetworkParametersMatrix"/> between subsequently connected ports to render a single composite
/// <see cref="NetworkParametersMatrix"/> defining the relationship between the ports of the first device and the ports of the final device.
/// </summary>
/// <remarks>Cascading is performed by first converting the input matrices to <see cref="TransferParametersMatrix"/> types, and then using
/// matrix multiplication to combine into a single T-parameter matrix. This matrix is then converted back to the original parameter matrix type.</remarks>
/// <param name="matrices">A list of matrices to be cascaded.</param>
/// <returns>A single composite <see cref="NetworkParameter"/> describing the network from the ports of the first device to the ports of the final device.</returns>
public static TMatrix Cascade <TMatrix>(IEnumerable <TMatrix> matrices) where TMatrix : NetworkParametersMatrix
{
if (matrices == null || !matrices.Any())
{
throw new ArgumentException("Argument cannot be null or empty", nameof(matrices));
}
using IEnumerator <NetworkParametersMatrix> enumer = matrices.GetEnumerator();
enumer.MoveNext();
NetworkParametersMatrix p1 = enumer.Current;
while (enumer.MoveNext())
{
NetworkParametersMatrix p2 = enumer.Current;
TransferParametersMatrix t1 = p1.ToTParameters();
TransferParametersMatrix t2 = p2.ToTParameters();
TransferParametersMatrix composite = t1 * t2;
p1 = composite;
}
return(p1.ConvertParameterType <TMatrix>());
}
/// <summary>
/// Cascades (embeds) a series <see cref="NetworkParametersMatrix"/> objects for all common frequencies between subsequently connected ports to render a single composite
/// <see cref="NetworkParametersCollection{TMatrix}"/> defining the relationship between the ports of the first device and the ports of the final device across frequency.
/// </summary>
/// <param name="collections">The array of <see cref="NetworkParametersCollection{TMatrix}"/> objects to cascade.</param>
/// <returns>A new composite <see cref="NetworkParametersCollection{TMatrix}"/> describing the network from the ports of the first device to the ports of the final device across frequency.</returns>
public static NetworkParametersCollection <T> Cascade <T>(params INetworkParametersCollection[] collections) where T : NetworkParametersMatrix
{
var allFrequencies = collections.SelectMany(c => c.Frequencies).Distinct();
NetworkParametersCollection <T> collection = new NetworkParametersCollection <T>(collections[0].NumberOfPorts);
foreach (var frequency in allFrequencies)
{
collection[frequency] = (T)NetworkParametersMatrix.Cascade(collections.Select(c => c[frequency]).ToList());
}
return(collection);
}
/// <summary>
/// Adds support for the ValueTuple deconstruction syntax for this object.
/// </summary>
public void Deconstruct(out double frequency, out NetworkParametersMatrix parameters)
{
frequency = Frequency_Hz;
parameters = Parameters;
}
/// <summary>Creates a new <see cref="FrequencyParametersPair"/> associated a network parameters matrix and the measurement/derived frequency.</summary>
/// <param name="frequency">The frequency in Hz.</param>
/// <param name="parameters">The network parameters matrix.</param>
public FrequencyParametersPair(double frequency, NetworkParametersMatrix parameters)
{
Frequency_Hz = frequency;
Parameters = parameters;
}
