skrf.network.connect

skrf.network.connect(ntwkA, k, ntwkB, l, num=1)[source]

Connect two n-port networks together.

Connect ports k thru k+num-1 on ntwkA to ports l thru l+num-1 on ntwkB. The resultant network has (ntwkA.nports+ntwkB.nports-2*num) ports. The port indices (‘k’,’l’) start from 0. Port impedances are taken into account. When the two networks have overlapping frequencies, the resulting network will contain only the overlapping frequencies.

Note

The effect of mis-matched port impedances is handled by inserting a 2-port ‘mismatch’ network between the two connected ports. This mismatch Network is calculated with the impedance_mismatch() function.

Parameters:

ntwkA (Network) – network ‘A’
k (int) – starting port index on ntwkA ( port indices start from 0 )
ntwkB (Network) – network ‘B’
l (int) – starting port index on ntwkB
num (int) – number of consecutive ports to connect (default 1)

Returns:

ntwkC – new network of rank (ntwkA.nports + ntwkB.nports - 2*num)

Return type:

Network

See also

connect_s: actual S-parameter connection algorithm.
innerconnect_s: actual S-parameter connection algorithm.
innerconnect_s_lstsq: actual S-parameter connection algorithm using lstsq.

Examples

To implement a cascade of two networks

>>> ntwkA = rf.Network('ntwkA.s2p')
>>> ntwkB = rf.Network('ntwkB.s2p')
>>> ntwkC = rf.connect(ntwkA, 1, ntwkB,0)