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Design >> High-Speed I/O Design >> PCB trace model
https://designers-guide.org/forum/YaBB.pl?num=1228896460

Message started by jeffyan on Dec 10^th, 2008, 12:07am

Title: PCB trace model
Post by jeffyan on Dec 10^th, 2008, 12:07am

hi all,
how can i do PCB trance modelling, can you provide some good information? thanks
jeff :)

Title: Re: PCB trace model
Post by SRF Tech on Dec 10^th, 2008, 11:51am

Hi Jeff,
There are a whole slew of tools out there than can help you. A lot depends on what level of accuracy you need. If you are dealing with an very precision, narrow or broadband RF signal, you may need to get a 3-D field solver. Ansoft, is one example of many big names that have a variety of tools that can help out. (google spicelink or HFSS for an introduction)

If your design is lower frequency and Transmission line accuracy is not as critical (only you can decide this), you could probably get away with a simple strip-line/micro-strip calculator and so forth. here is a simple example website: http://www.technick.net/public/code/cp_dpage.php?aiocp_dp=util_pcb_imp_calculator
though there are many others.

A lot depends on the accuracy you need and how much time and money you are able to invest.

Title: Re: PCB trace model
Post by Frank Wiedmann on Dec 11^th, 2008, 12:50am

If you would like to use a field solver, you could take a look at the free Sonnet Lite, see http://www.sonnetsoftware.com/products/lite/index.asp.

Title: Re: PCB trace model
Post by jeffyan on Dec 11^th, 2008, 4:41am

thank you so much!!

Title: Re: PCB trace model
Post by kanan on Jul 10^th, 2009, 8:08pm

For not so accurate applications you could try using lmg in the cadence environment to visualize the pcb cross-section and export it to mtline.

Title: Re: PCB trace model
Post by raja.cedt on Jul 10^th, 2009, 9:08pm

hi
why don't you use transmission line model?