skrf.network.connect

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

connect two n-port networks together.

specifically, 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.

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.

Notes

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.

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)