Thanks for replying guys.
I have got the spectrum analyser and signal generator, now when I tested my signal generator, for input power level from 30 to 10 dBm, Spectrum Analyser shows 1.67dBm. For 0, -5dBm, for -10 dBm -15dBm and so no.. Any idea what is wrong inside?
For power levels 0 to -30 dBm my output power at the frequency F1 (The frequency of input signal) I am getting 5 to 6 dBm difference in my simulated and actual results. However, I can not get any output for power level -10 to -30 dBm at 2x F1(comparable to noise) and for 10dBm and 0dBm input power the output at 2XF1 make no sense at all. What could be possibly wrong?
Very worried. Thanks for your help in advance.