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Page 1 of 1 (5 items)
  • Re: pnoise simulation setup questions (again?)
    Hi, Andrew I’m confused by your answer. In an oscillator if we just ignore harmonics of fundamental tone for simplicity, the system can be modeled by thermal/flicker noise mixing with fundamental tone (refer to SpectreRF user guide). The output at the mixer is still wideband noise. Then the wideband noise will be sampled by the ideal ...
    Posted to RF Design (Forum) by eeask on Fri, Apr 12 2013
  • Re: pnoise simulation setup questions (again?)
    Hi, Andrew Thanks again for your reply. Based on what you mentioned regarding an ideal sampler introduced at the output in simulation, I have to ask another question. Let's take a simple example here: fundamental freq=f0, fstart=10, fstop=f0/2, the sampling freq of the ideal sampler=f0 This way won't cause any aliasing for the ...
    Posted to RF Design (Forum) by eeask on Thu, Apr 11 2013
  • Re: pnoise simulation setup questions (again?)
     But k=0 will cause the sweep frequency from fstart to fstop (eg. 10 to f0/2). It's nowhere close to any harmonics. Just wonder why simulation results don't show much difference between k=0 and k=1.
    Posted to RF Design (Forum) by eeask on Wed, Apr 10 2013
  • Re: pnoise simulation setup questions (again?)
    Hi, Andrew Thanks for your quick reply.  Also I like to know if my understanding to the "relharmnum" paramerter is correct?   Best!
    Posted to RF Design (Forum) by eeask on Wed, Apr 10 2013
  • pnoise simulation setup questions (again?)
    Hello, there I'm simulating the jitter performance of a driven ckt (inverter chain like, e.g.). I'm confused by the simulation setup and like to ask a couple of questions regarding the setup parameters.  1.  relharmnum First I set sweeptype=relative and relharmnum=1 and run the simulation. Then I change  relharmnum=0 and ...
    Posted to RF Design (Forum) by eeask on Wed, Apr 10 2013
Page 1 of 1 (5 items)