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

How does spectre handle noise from s-parameter nport device?

Status
Not open for further replies.
ezbentley

ezbentley

Junior Member level 3
Joined
Apr 24, 2006
Messages
26
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
1,510
spectre nport

I am running noise simulation and it indicates that some of the major noise contribution comes from various s-parameter models in my circuit. How does spectre calculate the noise of those models? Technically s-parameter model does not contain any information about noise.
 

Re: How does spectre handle noise from s-parameter nport dev

Hi
One way:
passive n-port has voltage noise matrix v=2*k*T*(z+conj(z))
z-is impedance matrix
z can be obtained from s matrix

another way

matrix of noise powers c=(I-S*S')*k*T where ' is transpose and conj

T is Kelvin temperature
k is boltzmann

This is common theory for noise of linear passives

Regards
 

Re: How does spectre handle noise from s-parameter nport dev

If the S parameter model doesn’t contain ANY noise data would be impossible to calculate the real noise of the device.
 

Re: How does spectre handle noise from s-parameter nport dev

Yes, If device is passive device
The simplest example is resistor
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top