Is it possible to obtain the S-parameters of a circuit with only S11 measurements (S11 measurement with a VNA)?
- My gut tells me that it should be possible by connecting open, short and characteristic impedance to the system but for my life I cannot figure how.
- What is the DUT has unknown characteristic impedance (or is a complex circuit of lumped elements)? Then I cannot terminate with Z0 exactly. Can I just use a known reference resistor?
Background: I have a PCB with a single SMA as input; the first part is a delay line, then a matching network and then VNA input. I want to design the L-match on the PCB properly.
PS: frequency is 900 MHz (UHF). I can desolder/resolder components on the PCB which are 0402 (for example, I can remove the L-match)