Save multiple values versus frequency using spectremdl for spectre version 2016

Measurements are typically scalar measurements (you can also output arrays in some cases), so to do this you'd need to write a formatted report instead. This should do the job:

alias measurement ACplot{
  input string reportFile
  run AC
  print fmt("%-15s %-15s %-15s\n","freq","ac_db","ac_ph") to=reportFile
  export real ac_db  = db(V(Vout))     // Magnitude in dB
  export real ac_ph  = r2d(ph(V(Vout)))// Phase in radians
  print fmt("%-15.12g %-15.12V %-15.12V\n",xval(ac_db),ac_db,ac_ph) addto=reportFile
}

run ACplot(reportFile="ACplot.rpt")

The output file would then be in the file ACplot.rpt and would look like this:

freq            ac_db           ac_ph          
1               -218.01580272   89.9999998193  
1.04712854805   -217.61580272   89.9999998108  
1.09647819614   -217.21580272   89.9999998018  
1.1481536215    -216.81580272   89.9999997925  
1.20226443462   -216.41580272   89.9999997827  
1.25892541179   -216.01580272   89.9999997725  
1.31825673856   -215.61580272   89.9999997618  
1.3803842646    -215.21580272   89.9999997505  
1.44543977075   -214.81580272   89.9999997388  
1.51356124844   -214.41580272   89.9999997265  
1.58489319246   -214.01580272   89.9999997136  
1.65958690744   -213.61580272   89.9999997001  
1.73780082875   -213.21580272   89.9999996859  
1.81970085861   -212.81580272   89.9999996711  
1.90546071796   -212.41580272   89.9999996556  
1.99526231497   -212.01580272   89.9999996394  
2.08929613085   -211.61580272   89.9999996224  
2.18776162395   -211.21580272   89.9999996046  
2.29086765277   -210.81580272   89.999999586   
2.39883291902   -210.41580272   89.9999995665  
2.51188643151   -210.01580272   89.9999995461  
2.6302679919    -209.61580272   89.9999995247  
2.75422870334   -209.21580272   89.9999995023  

and so on...

Andrew