Rectifier ADS co-simulation Layout+schematic

Hi...i'm working on rectifier circuit using ADS....i got a good results in schematic simulation..however when i convert the circuit to layout...my result decreased about 1V and fluctuated/ have a big ripple (+-4V ripple). I would like to ask any suggestion to improve/optimize my result so that i could at least reduced the fluctuated on the output result.

attached here the circuit n result from both simulation