Trying to simulate an amplifier

Hi everyone
As a new user of ADS, I have designed an amplifier based on a schematic I have found in a book. Now I want to run a simulation so as to check if my PA works fine. There is no simulation error but my question is: How to apply input 10dBm tone and the amplifier frequency. In my schematic I only put term with 50ohms at both terminations. in other words how to display the results such as PAE, drain efficiency, output power. thx in advance

Do you intend to apply power (instead of a voltage)?

yes. Actually I will be working on a power amplifier project and the requirement is that: the power amplifier should require 25dBm of input power to reach its maximum output power

For those style measurements from a simulation you need to be doing a Harminic Balance analysis. If you have only termination on the network under test then you are probably just doing a simple linear analysis and in that case such measurements are not possible.

Use the menu command Insert > Template... to select HB1Tone, HB1ToneSwptFreq or HB1ToneSwptPwr to see example schematic to configure this type of simulation.

Make sure the design for the amplifier contains non-linear Spice-like models for the active devices and not simply s-parameter models. S-parameter model data will not generate power/bias dependant performance to be able to see the required measurments.

Ok thx I understood the harmonic balance part but what do you mean by non-linear Spice-like models?
thx once again for your response.