Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Closed-loop gain of SC amplifier by AC analysis

Status
Not open for further replies.
ashrafsazid

ashrafsazid

Advanced Member level 4
Joined
Sep 17, 2016
Messages
104
Helped
1
Reputation
2
Reaction score
2
Trophy points
18
Location
Germany
Activity points
935
Hi,

Is there any way to to calculate closed loop gain of an SC amplifier by using ac analysis? In transient analysis the SC gain in amplifier is desired, but in ac analysis it is not correct. Can anybody please tell me whether there is a way to do this by ac analysis?
 

Use slave small signal analysis subjected to master large signal periodical steady state analysis.
Such analyses are available in Synopysis HSPICE, Sylvaco SPICE, Cadence Spectre, etc.

There you can choose shooting newton method as analysis as periodically steady state analysis.
 

There is a periodic AC analysis also in Cadence Spectre RF. Maybe that is also good. And you can save the operating points of the stable amplifier from simple transient analysis also and you can run AC with those.
 

Yes - you can.
The most simple and exact method is to replace the s/C blocks with time-continuous (artificial) elements which then allow usage of the well-known simulation packages.
In this case, also the periodic shape of the transfer function is preserved.
For this purpose, two different methods do exist
* Storistor method
* Coupled controlled current sources
 

**broken link removed**
page 31 (9.4-12)
 

erikl said:
Hello Lutz, what's that? Couldn't find anything about Storistor neither in Wiki nor in G00GLE.
Click to expand...

See here: Nelin (1983): IEEE Trans. Circuits and Systems, CAS-30, 43-48.
 

  • Like
Reactions: erikl

    erikl

    erikl

    Points: 2
    Helpful Answer Positive Rating
Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top