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Paper Presented at 2012 CAD Conference

posted Jul 16, 2012, 12:15 PM by Matt Francis

Congats to Brett and Zihao on their recent publication on the 2012 CAD Conference

[1] Shook, B.; Gong, Z.; Feng, Y.; Mantooth, H.A.; Francis, A.M.: Multi-Chip Power Module Fast Thermal Modeling for Layout Optimization, Proceedings of the 12th International CAD Conference. 2012.

Paper accepted for NSREC 2011

posted May 5, 2011, 8:19 AM by Matt Francis

"Predictive Modeling of TID and SET Effects from Datasheet and Radiation Data for Commercial Components" was accepted for presentation at the 2011 Nuclear and Space Radiation Effects Conference (NSREC), Las Vegas NV, July 2011.
 
A. M. Francis (Member IEEE), N. W. van Vonno (Senior Member, IEEE), J. Holmes (Member IEEE)

""When designing board-level solutions for harsh environments, component radiation data may be
available, but rarely are simulation models.  A scalable approach to modeling components including
TID and SET effects is applied to the Intersil ISL7884XASRH.""

SiGe Research

posted Jan 11, 2011, 8:50 AM by Matt Francis   [ updated Jan 11, 2011, 8:58 AM ]

A recent completed research program into the feasibility of using SiGe customs ASICs for space applications included Lynguent for complete analog chipset verification.

This article published at the IEEE Aerospace conference (C. Webber, Myself and others) explains the modeling approach used to model such a large mixed-signal System-In-Package (SIP).  The complete chipset is quite mixed-signal, including almost equally large Digital and Analog sub-components.

Lynguent in the News

posted Nov 15, 2010, 9:50 AM by Matt Francis

A new article in a series on IC Verification focuses on Lynguent and our role in the Design/Verification process.  Click through to read Part I: Lynguent History

http://www10.edacafe.com/nbc/articles/view_weekly.php?articleid=879600

Shelter from the sun

posted Aug 18, 2010, 8:17 AM by Matt Francis

We've finally had a break from the last 2+ weeks of sweltering 100 degree weather here in NWAR.  About two weeks ago we brought in our second cutting of hay at the start of the inferno.   Luckily I took the time to finish my tractor canopy right as the heat was coming.  A neighbor fab'ed the frame for me in exchange for some brush-hogging.  I got it on in time for 106 degree raking and haying.. It was a lifesaver!  The frame is painted John Deere green and the top is a canvas tarp I got at the local farm supply.  Stretched and screwed into the frame, it's held up to tree limbs quite well so far.

Bit by the Python

posted Jul 2, 2010, 8:14 AM by Matt Francis

While I'm an electrical engineer by training, I've always gravitated towards programming and languages.  Don't get me wrong, I enjoy hardware and circuit design, but a good bit of programming can be just as gratifying as a functioning circuit.  One of my favorite "utility" languages is Python.  It has an elegant syntax and, while a bit verbose, when I come back to a bit of code months or years later, I quickly understand how it works, even if it has 0 comments;  I can't really say the same for C or the devil's own Perl.

Here's an example of something that hurts my brain to remember how to do in a shell language, like Bash or Csh, but took literally less than a minute to do in Python.  Goal: give every directory in a sub-directory a prefix:

import os

files=os.listdir(".")
PREFIX="hey"

for f in files:
    if os.path.isdir(f):
       cmd="mv %s %s%s" % (f,PREFIX, f)
       os.system(cmd)

#NOTE: alternatively, concatenation works too!: cmd="mv "+f+" "+PREFIX+f

One of the truly powerful features of python are all of the libraries it comes with.  Here, I'm using the "OS" module to query for directories and to run system commands.  There are even better ways to do this, but this gets the job done!

Happy horses

posted Jun 17, 2010, 11:29 AM by Matt Francis

Well, it may be hot but our horses are taking it in stride.  Here's our oldest, Hamlet, coming in for dinner.  Not bad for a 32+ year old horse, eh?  Now that the first cutting is in, they get access to some of the recently cut pastures, so they've all got a jump in their step when you let them out in the morning.  I wish I could get that excited about breakfast.

When work is the vacation...

posted Jun 7, 2010, 1:32 PM by Matt Francis

Just finished up a week of "time off" from the day job working on our place.  Lynn and I baled over 450 square bales of hay, over 300 of which went into our barn.  Got a ton of projects done, including building new closet doors and custom screen/storm door for the house.  After spending a day at the computer for a change, I'm starting to think that a turn of the century farmer would think the average techy's day job is a vacation!

Hay season is (already) upon us

posted May 7, 2010, 9:22 AM by Matt Francis

Went for a short walk this morning to check out the hay pastures.  The grass is already waist high in places; it's not usually this tall until the END of May, not the beginning!  Needless to say, we'll be trying to bring our first cutting in a wee bit early this year.  Around here, cutting anytime before June is typically very early. 

The grass looks really good, lots of alfalfa mixed in with the fescue and bermuda.  Should make some outstanding hay.

Lynn's great performance in Tulsa

posted May 5, 2010, 9:43 AM by Matt Francis

Just got back from Tulsa last night.  Lynn had an outstanding solo performance with the TCC Community Band.  Enjoyed finding my first private percussion instructor, from middle school, as the percussionist for the group!  Pete still plays a mean set of skins ;)

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