oscillator
I am sorry to send a mail here to ask for your advice
I am given an assignment to simulate a cmos oscillator using any
software like ADS or LT spice.
I am new to electronics as I am from physics background and
currently just started my part time course in electronics.
I have not even gone through the course and now I have to simulate
something which I have not really have background on.
Any kind soul kindly advice me what does a cmos oscillator means?
I see oscillator which bipolar and mosfet type . But have not seen a
nmos and pmos (cmos) oscillator.
Anyone can show a good link/tutorial(IEEE paper) on how to simulate
a simple cmos oscillator (0.18um) . This is an assignment and should
be the simple type of oscillator. I am really a green horn here.
Kindly advise me
Thank you so much in advance
rgds and thanks
Jason
u can make a very easy cmos oscillator
by cascading three cmos inverter and make the input of the frist one is the output of the last one , this called a ring oscillator
and simlate it very easy but u must define a initial condition
that's it
and visit
http://www.odyseus.nildram.co.uk/RFIC_Circuits_Page.htm
u will find there a ring oscillator tutorial about ring oscillator design using @DS
khouly
This is also a good book
https://www.edaboard.com/viewtopic.p...ter+simulation
Dear Khouly and Boy
Thanks a lot for the info given.
My title is to simulate a clapp LC oscillator. I found from website that clapp oscillator is the kind that utilises two series capacitors in its LC circuit instead of using inductor.
Can a simple ring oscillator in you mentioned be configured to have a clapp LC type?
Kindly explain in details.
If ring oscillator is not a choice, then what configuration I can go for in order to have the 0.18um Cmos technology for a clapp LC oscillator.
Kindly help
thank you
rgds and thanks
jason
dear jason_class
ring oscillator cannot be used with lc ,
if u want to design a clapp oscillator , it is not implemented in CMOS technology
the most used oscillator in CMOS technology is LC cross coupled
it is very famous , just search with CMOS VCO or oscillator
khouly
Dear Khouly
Thanks a lot.
But my the title given to me is LC Clapp oscillator in cmos technology 0.18um.
I will email and check with lecturer and will be back here for discussion.
Thank you for your advice.
Thank you very much Khouly
rgds and thanks
jason
Hi Jason,
Look for the book:
"Oscillator Design and Computer Simulation" by Randall W. Rhea, if I am right it should be somewhere on the forum,
"Microwave Circuit Design using Linear and Nonlinear" by Vendelin/Rohde/Pavio
(chapter 6 about the oscillators also on the forum:
https://www.edaboard.com/viewtopic.php?t=84577 )
and
hxxp://rerc.icu.ac.kr/UploadFile/DOC/Oscillator_Basics.pdf
(replace xx with tt)
Good luck
Al
Hi All
Sorry for the delay.
The links are great
:) Thank you
Cheers
Jason
here you can find some papers related to oscillators