Tag: s parameter

S-parameters with LTSpice

The .net Spice function can be used to calculate two port parameters such as Z,Y,H and S parameters. Zin and Zout can also be calculated. The circuit below shows a simple example. This is the bans pass filter (BPF). Here is the LTspice file. ltspice_sparameter   1. Create an input port V1 with a series resistance. The series resistance will typically be 50 Ohm for S-parameters. This resistance will not influence the Z,Y,H parameters or Z in. It will influence the value of Zout. You can choose this value as 0 Ohm for an ideal source.   2. Create an output port with a load resistance Rout. The load resistance […]