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Thread: Problems in designing oscillator


Permlink Replies: 3 - Pages: 1 - Last Post: Oct 27, 2011 2:42 PM Last Post By: sara
sara

Posts: 7
Registered: 10/27/11
Problems in designing oscillator
Posted: Oct 27, 2011 1:41 PM
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Attachment oscillator.png (22.7 KB)
Attachment plot.png (11.1 KB)
Hello,
I should design an oscillator just consists of inductors and capacitors . the circuit should not have any resistors.
also, It has 4 MOSFETs instead of Not Gate. the lenghth of each inductor should be low, but the number of them are high. (as the schemes have shown below)
I designed and tested in every situation that I thought. The problem is that there is not resonable scheme after the simulation.
Any help will be appreciated.
Please see attached.
Image
Image
sara

Posts: 7
Registered: 10/27/11
Re: Problems in designing oscillator
Posted: Oct 27, 2011 1:46 PM   in response to: sara in response to: sara
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another schematic that I designed;
L=0.25 mH
length of L=12.5 mm
C=0.25 pf
No. L or C=52
VDD=10 v
(W/L) in Mosfet=(25/0.5)

but the plot was shown nothing!!
iandoubleyou


Posts: 56
Registered: 02/07/07
Re: Problems in designing oscillator
Posted: Oct 27, 2011 2:00 PM   in response to: sara in response to: sara
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Hi Sara - which product are you using for your design/simulation?

Your post may be better here...
view forum
sara

Posts: 7
Registered: 10/27/11
Re: Problems in designing oscillator
Posted: Oct 27, 2011 2:42 PM   in response to: sara in response to: sara
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Thanks alot. ADS2008

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