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ADF7030-1 Differential LNA input matching

Hi All,

We are developing the product using ADF7030-1.

I have a few questions of Receive differential LNA matching.

First of all, we made a circuit that is not combined type matching network of Tx, Rx, though.

On page5 of the datasheet, the input impedance of 169MHz in Rx mode is listed on 78-j20.

However, we designed a circuit where Tx and Rx are not combined, so we can't apply the input impedance of the datasheet.

Q1. Should I design with an unconditional Tx, Rx combined circuit?

Q2. Otherwise, where should the 169MHz Rx mode input impedance value be on the Smith chart?

Q3. And is it necessary to measure the input impedance by short-circuiting the LNA1 and LNA2 pins and attaching port2?

Thank you for your help.

Best regards