Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic 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 do phase noise analysis of QVCO?

Status
Not open for further replies.

hrkhari

Full Member level 4
Joined
Mar 4, 2004
Messages
224
Helped
6
Reputation
12
Reaction score
3
Trophy points
1,298
Activity points
2,250
Hai Guys:

On performing the PNOISE and PSS analysis to determine the phase noise response, in a differential osc configuration there are two output, so we can select one of the nodes as the Oscillator node and the other as the reference node in the PSS oscillator select option, but if one construct a QVCO we have four output, how(which node) do we setup the node for Oscillator node and reference node in the PSS setup form. Thanks in advance

Rgds
 

BigBoss

Advanced Member level 5
Joined
Nov 17, 2001
Messages
4,979
Helped
1,503
Reputation
3,004
Reaction score
1,341
Trophy points
1,393
Location
Turkey
Activity points
30,021
Phase Noise of QVCO

Doesn't matter. PN is independent from quadrature outputs so that tw coupled output can be selected.But they must be coupled so 0,180 degree or 90,270degree..
 

    hrkhari

    Points: 2
    Helpful Answer Positive Rating

hrkhari

Full Member level 4
Joined
Mar 4, 2004
Messages
224
Helped
6
Reputation
12
Reaction score
3
Trophy points
1,298
Activity points
2,250
Re: Phase Noise of QVCO

Hi:

When I execute the PNOISE and PSS analysis in determining the phase noise of the QVCO designed, the plot is not displayed, whereas an indication says:

Output nodes of pnoise analysis not saved for pss analysis. As a result, the above selected function cannot be executed.

I had done the same procedure in determining the phase noise of a VCO, where there is no problem in executing it. But when I configure the QVCO from the VCO topology the phase noise execution fails. Pls do guide me in obtaining the Phase Noise Plot. Thanks in advance

Rgds
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top