[SOLVED] Discontinuities in "Tuning Sensitivity" curve for LC VCO

Status
Not open for further replies.

The Commando

Newbie level 5
Joined
Sep 30, 2011
Messages
10
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,283
Location
Alexandria, Egypt
Activity points
1,347
Hi,
I am designing an LC VCO , and when I plot the tuning sensitivity plot, i.e. frequency - voltage curve (varactor control) , with a larger number of steps, I get discontinuities in the curve, and errors at some values ... in other words, at couple of voltage values, the frequency is much lower, and at few other values, it report an error in simulation ... How is that to get a correct simulation @ V_ctrl = 1.204 V and error @ V_ctrl = 1.208 ?? .... any explanation ??
 

Can you show a circuit?
Perhaps it is just a simulation problem.
 

Nevermind, I found the problem, it's the tstab parameter in PSS analysis , anyway, thx for answering
 

Status
Not open for further replies.
Cookies are required to use this site. You must accept them to continue using the site. Learn more…