[SI-LIST] Re: S parameter to time domain signal

Hi Bill and Cody
The beharioural simulators you mention do not accurately simulate the time
domain simulations.  Where no great deal of accuracy is required these 
simulatiors
provide a minimum level of assurance that a circuit may operate. 

The strength of the beharioural simulators is only in their fast 
simulation time and
in the tie-in to the board layout software.  Quick and easy but weak in 
accuracy.

Spice type simulators are quite a bit better, take more time to run but 
do not
show frequency dependent loss. 

ALL THE SIMULATION TOOLS YOU USE, USE ONLY A SINGLE
FREQUENCY ATTENUATION FACTOR FOR ANY OF THE
S-PARAMETERS..

Only ADS uses a convolution of the impuse response obtained from the
S-Parameters to convert the the model back into the time domain..  Anything
less is only an approximation.

Ron Miller




Hargin, Bill wrote:

>Hi Cody/Ron:
>
>  
>
>>>Does anyone in the group know of any available software
>>>      
>>>
>>packages that
>>    
>>
>>>can take post measurement S11 data and convert it to a time domain=20
>>>reflected signal?
>>>      
>>>
>
>While it's true that tools with RF roots perform this analysis, we've
>offered this functionality for years ourselves, and I'm sure there are
>several others offering this functionality ... 3 Mentor tools that do
>this:
>
>   HyperLynx: Pre- and post-layout; Works in any PCB flow.
>   ICX: Primarily for floorplanning and post-layout; Board Station and
>Expedition.
>   ICX Pro: Pre- and post-layout; Tightly integrated into the Expedition
>flow.
>
>
>Bill Hargin
>High-Speed Marketing Manager
>Mentor Graphics Corp.
>Systems Design Division
>425-301-4425 - Mobile=20
>
>=20
>
>
>  
>
>>-----Original Message-----
>>From: si-list-bounce@xxxxxxxxxxxxx=20
>>[mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of ron@xxxxxxxxxxx
>>Sent: Friday, December 21, 2007 3:51 PM
>>To: codymiller@xxxxxxxxxx
>>Cc: si-list@xxxxxxxxxxxxx
>>Subject: [SI-LIST] Re: S parameter to time domain signal
>>=20
>>Hi Cody
>>=20
>>ADS is the only tool that takes complex S-Parameter data as a=20
>>model and simulates the time domain signals including reflections.
>>=20
>>Call Agilent.... Lease is about 20K per year fully supported
>>=20
>>Ron Miller
>>=20
>>=20
>>codymiller@xxxxxxxxxx wrote:
>>=20
>>    
>>
>>>All,
>>>
>>>Does anyone in the group know of any available software=20
>>>      
>>>
>>packages that=20
>>    
>>
>>>can take post measurement S11 data and convert it to a time domain=20
>>>reflected signal?
>>>
>>>Thanks,
>>>Cody Miller
>>>------------------------------------------------------------------
>>>To unsubscribe from si-list:
>>>si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>>>
>>>or to administer your membership from a web page, go to:
>>>http://www.freelists.org/webpage/si-list
>>>
>>>For help:
>>>si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>>>
>>>
>>>List technical documents are available at:
>>>               http://www.si-list.net
>>>
>>>List archives are viewable at:    =20
>>>             http://www.freelists.org/archives/si-list
>>>or at our remote archives:
>>>             http://groups.yahoo.com/group/si-list/messages
>>>Old (prior to June 6, 2001) list archives are viewable at:
>>>             http://www.qsl.net/wb6tpu
>>>=20
>>>
>>>
>>>=20
>>>
>>>      
>>>
>>=20
>>=20
>>--
>>Ronald B. Miller, Microwave/SI Engineer  RAIL =3D NOISE + REFLECTIONS
>>Gigahertz Data Div of MI Corp.              \\  //         \\  //=20
>>7721 Sunset Avenue                           \\//           \\//
>>Newark,  CA  94560                      ->JITTER<-   EYE   ->JITTER<-
>>tel 510-793-4744,                            //\\           //\\
>>fax 510-742-6686                            //  \\         //  \\
>>www.ghzdata.com                          RAIL =3D NOISE + REFLECTIONS=20
>>                                               =20
>>                                                      =09
>>                                                              =09
>>=20
>>------------------------------------------------------------------
>>To unsubscribe from si-list:
>>si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>>=20
>>or to administer your membership from a web page, go to:
>>http://www.freelists.org/webpage/si-list
>>=20
>>For help:
>>si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>>=20
>>=20
>>List technical documents are available at:
>>                http://www.si-list.net
>>=20
>>List archives are viewable at:    =20
>>              http://www.freelists.org/archives/si-list
>>or at our remote archives:
>>              http://groups.yahoo.com/group/si-list/messages
>>Old (prior to June 6, 2001) list archives are viewable at:
>>              http://www.qsl.net/wb6tpu
>> =20
>>=20
>>=20
>>    
>>
>------------------------------------------------------------------
>To unsubscribe from si-list:
>si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
>
>or to administer your membership from a web page, go to:
>http://www.freelists.org/webpage/si-list
>
>For help:
>si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
>
>
>List technical documents are available at:
>                http://www.si-list.net
>
>List archives are viewable at:     
>               http://www.freelists.org/archives/si-list
>or at our remote archives:
>               http://groups.yahoo.com/group/si-list/messages
>Old (prior to June 6, 2001) list archives are viewable at:
>               http://www.qsl.net/wb6tpu
>  
>
>
>  
>


-- 
Ronald B. Miller, Microwave/SI Engineer  RAIL = NOISE + REFLECTIONS
Gigahertz Data Div of MI Corp.              \\  //         \\  // 
7721 Sunset Avenue                           \\//           \\//
Newark,  CA  94560                      ->JITTER<-   EYE   ->JITTER<-
tel 510-793-4744,                            //\\           //\\
fax 510-742-6686                            //  \\         //  \\
www.ghzdata.com                          RAIL = NOISE + REFLECTIONS 
                                                
                                                                                
                                                        



------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field

or to administer your membership from a web page, go to:
http://www.freelists.org/webpage/si-list

For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field


List technical documents are available at:
                http://www.si-list.net

List archives are viewable at:     
                http://www.freelists.org/archives/si-list
or at our remote archives:
                http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
                http://www.qsl.net/wb6tpu

Other related posts: