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.

How to design Quadrature Delta-Sigma ADC ?

Status
Not open for further replies.

pancho_hideboo

Advanced Member level 5
Joined
Oct 21, 2006
Messages
2,847
Helped
767
Reputation
1,536
Reaction score
732
Trophy points
1,393
Location
Real Homeless
Activity points
17,489
Hi.

I'm now trying to design high order single loop quadrature bandpass delta-sigma ADC.
I know delta-sigma toolbox of MATLAB which was developed by Richard Schreier.
This toolbox is useful for real delta-sigma ADC, but can't be used
for quadrature(complex) delta-sigma.

How to design high order quadrature bandpass delta-sigma ADC systematically ?
Is ther any simple solution for applying delta-sigma toolbox to complex DSM ?
 

Newest Delta Sigma Toolbox(Version 7.3, July 3, 2009) have functions for handling quadrature(complex) delta-sigma such as "synthesizeQNTF()", "realizeQNTF()", etc.

I can synthesize NTF by using "synthesizeQNTF()".
Next I can get the ABCD matrix by using "realizeQNTF()".

Finally how can I determine the coefficient like the [a,g,b,c] in real delta-sigma structure ?

And there are forms of "FF/FB/PFF/PFB" for the quadrature(complex) structure.
What is the difference between them and the "CIFF/CIFB/CRFF/CRFB" for real delta-sigma structure ?
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top