Modeling impedance matching network
(30+j10) is indicating that the pin has some inductance associated with it.
J10 is the inductive reactance at a given frequency. Since no frequency is specified, lets assume it is the operating frequency of 2.4 GHz which gives an inductance of 663 pH. 

Your simulation is plotting the power ratio of out/in. This does not include R2 and so is independent of R2. If you move the node labeled In to I1 then you will see an effect of R2.

At these frequencies the parasitic elements of capacitors and inductors are significant, so it would be a good idea to find out what they are and include them in the simulation, or find a spice model for them.