I wonder if the s21 for this amplifier HMC475ST89 is available with small frequency step, 10MHz for example. The s2p file provided on analog devices website has a frequency step of 50MHz.
I looked at the S-parameter data used for the data sheet's Broadband Gain & Return Loss and Gain vs. Temperature plots and found a 49.75 MHz step size...which won't help satisfy your desired 10 MHz step size. The data set for the website's .s2p file used a 29.95 MHz step size. 29.95 MHz is the finest step size we have (and you already have that data)...so I'm sorry I have nothing better to offer.
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