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Modeling >> Behavioral Models >> tunnel diode
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Message started by svensl on Mar 8^th, 2006, 12:12am

Title: tunnel diode
Post by svensl on Mar 8^th, 2006, 12:12am

I was wondering whether there is a model for a tunnel diode included in one of the Cadence libraries. I could not find any but might have no looked in the right places. If not, does anyone know how to best model a tunnel diode in Spectre?
I googled a bit around and have found a few examlples (see picture and also given link). BTW, I want to use the tunnel diode for a oscillator.

http://www.intusoft.com//nlhtm/nl51.htm

Thanks for any feedback.
Sven

Title: Re: tunnel diode
Post by Geoffrey_Coram on Mar 15^th, 2006, 5:53am

There are a couple of papers in IEEE Xplore, for example

"SPICE model of the resonant-tunnelling diode"
Brown, E.R.; McMahon, O.B.; Mahoney, L.J.; Molvar, K.M.;
Electronics Letters
Volume 32, Issue 10, 9 May 1996 Page(s):938 - 940

Title: Re: tunnel diode
Post by jbdavid on Apr 15^th, 2006, 4:34pm

one of the higher level diodes supports tunneling..was often used to model gate leakage before bsim4 came along..
level=3 ?
Jonathan

Title: Re: tunnel diode
Post by Geoffrey_Coram on Apr 25^th, 2006, 5:33am

jbdavid wrote on Apr 15^th, 2006, 4:34pm:

one of the higher level diodes supports tunneling..was often used to model gate leakage before bsim4 came along..

BSIM4 has trap-assisted and band-to-band tunneling; I believe these are different effects than found in a true tunnel diode, where the energy bands are seriously contorted.