Extract Noise Parameters from S2P FILE

[felicia_1]

Hello,
I would like to ask if anyone knows how to extract the Noise Parameters from the S2P file in Matlab?

 

[vfone]

To do this noise extraction, the S2P file should include the Fmin (and Gamma_opt and Rn), as in the example below.
Not all the vendor S2P files includes those parameters, which sometime must be measured by the customer.

! NE3503M04
! N-channel HJ-FET
! Vds = 2 V Id = 7 mA
# GHz S MA R 50
! f S11 S21 S12 S22
! GHz MAG ANG MAG ANG MAG ANG MAG ANG
2.000 0.963 -26.800 4.661 150.500 0.031 71.100 0.637 -21.100
2.500 0.945 -33.400 4.600 143.300 0.039 67.500 0.626 -26.900

! f Fmin Gammaopt Rn/50
! GHz dB MAG ANG -
2.000 0.230 0.831 17.100 0.254
2.500 0.240 0.818 20.700 0.248

 

[felicia_1]

Yeah. My s2p file did include all these. But my concern is how to extract it in Matlab? Does it have a special function like how to extract S-Parameters?

 

[mtwieg]

Noise parameters cannot be extracted from simple S parameters alone.