Hello,
I recently graduated with an M.S in EE from State University of New York
at Binghamton. My thesis was in eliminating package resonances due to
standing waves formed due to propagation and reflection of radial waves
in between power and ground planes. I would like to share the
presentation with the list.
We incorporated a metal screen in between the power
and ground planes of a board to act as a distributed capacitor
arrangement. We used Speed2000 to model the setup and we confirmed
simulations with measurements on a hardware model using a vector network
analyzer. We concluded that with this approach we can eliminate all
resonances due to standing waves upto 10 GHz (may be even higher) on a
4"X5" board by incorporating a screen of appropouriate dimension and a
dielectric with low dielectric constant. If anyone is interested in the
topic please go to http://bingweb.binghamton.edu/~bj95053/ and open the
file "Thesis Presentation". It is a power point file. If you have any
questions or comments on this I would be happy to hear from you.
Thanks.
Regards,
Vijay
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