Wrong AC simulation results with MMSIM10 (IC6.14)

 I found that there is some problem with specific test simulation with MMSIM. 

For example, consider the simple NMOS with standard 0.18um technology,

vdd=1.8v, vss = 0v,

its Drain connected tovdd, its source connected through inductor L1 to ground, and its gate is connected to AC signal source with DC=0,AC=1 through 50Ohm resistor and L2. 

L1 and L2 are tuned to approximately 5GHz, now it is obvious that when i am measuring current through the gate, then at around 5GHz i am supposed to see 20ma, which would of course correspond to 50Ohm resistance.

I have verified this already on two other simulators, as well as a free LTspice simulator, and that was the case for all of them.

I have NO idea how come i get only 1.5ma current when performing same test with same model for transistor in MMSIM?

I am attaching the test setup for cadence, the snapshot of plot from LTspice simulator, which shows correct gate current at desired frequency... and a snapshot from MMSIM which shows approximately correct frequency but totally wrong current: 1.5mA which does NOT correspond to 50Ohm resistance.

Now, my question is...is there maybe some kind of setting which has to be tuned for such specific test or what?

im just running AC analysis with frequency sweep as always, and in parallel with DC analysis, to save operating points.

any ideas how come MMSIM give me wrong results?

 Here is a picture of wrong spectre plot (i have no idea how come this one cant be attached, cannot make URL either, sorry):

picpaste.com/spectre_plot2-iWPfuT7r.png

And here is a test setup in spectre:

 picpaste.com/spectre_plot-LT5bozZK.png