Simulating Phase noise at specific points

Vishal,

Provided that you can format an ASCII file the way you want, you can create a file called (say) specificPoints.scs :

parameters specificPoints=[10 15 20 150 1k 1.2k 10k 15k 27k 123k 549k 1.2M]

or if you want to spread it over multiple lines:

parameters specificPoints=[ \
10 \
15 \
20 \
150 \
1k \
1.2k \
10k \
15k \
27k \
123k \
549k \
1.2M \
]

Then reference this file via Setup->Model Libraries.

Now in the pnoise analysis (or indeed any other analysis where you want to have specific points defined in a file), tell it to use "Single-Point" rather than a sweep and pick one of the points in the file as the frequency.

Then rather than filling in the "Add Specific Points" checkbox and field, go to the Options form for pnoise, and go to the bottom where it says additionalParams. Then fill in:

values=specificPoints

(i.e. refer to whatever you called the parameter in the include file).

That's it - I tried this and it works well...

    pnoise: freq = 15 Hz       (9.09 %), step = 5 Hz         (9.09 %)
    pnoise: freq = 20 Hz       (18.2 %), step = 5 Hz         (9.09 %)
    pnoise: freq = 150 Hz      (27.3 %), step = 130 Hz       (9.09 %)
    pnoise: freq = 1 kHz       (36.4 %), step = 850 Hz       (9.09 %)
    pnoise: freq = 1.2 kHz     (45.5 %), step = 200 Hz       (9.09 %)
    pnoise: freq = 10 kHz      (54.5 %), step = 8.8 kHz      (9.09 %)
    pnoise: freq = 15 kHz      (63.6 %), step = 5 kHz        (9.09 %)
    pnoise: freq = 27 kHz      (72.7 %), step = 12 kHz       (9.09 %)
    pnoise: freq = 123 kHz     (81.8 %), step = 96 kHz       (9.09 %)
    pnoise: freq = 549 kHz     (90.9 %), step = 426 kHz      (9.09 %)
    pnoise: freq = 1.2 MHz      (100 %), step = 651 kHz      (9.09 %)

Regards,

Andrew.

Hi Andrew ,

Thanks for the help. This works .

Regards

Vishal