Today, my paper in IEEE Trans of applied superconductivity was finally accepted for publication.
I have now started to work on oversampling delta modulators. Much of the modeling has to be complete by the end of the month as there is a progress report meeting in Jan.
I had thought I could submit a paper for DAC 2009, but now that looks bleak.


I am sure most of you would have heard of the famous Stephen Hawking bet with Kip Thorne and Piskell. It certainly makes the matter more interesting and also brings in unintended attention. I became more curious on the bet made by Richard Feynman. He promised to pay 1000 dollars to anybody who can make a motor 1/64 th the size of an inch. It was solved by an engineer with the existing technology. Feynman was disappointed as the solution did not require a new technology to slove the problem. But physicist Phillip Ball claimed the solution exposed our lack of understanding of the current technology. It struck me then that my research RSFQ might also be in some kind of state which needs similar challenge.

More to come……..

Reference :

The house of representatives in the US congress pass the bill, probably without even reading it. Not easy to ready 405 page document in a day.

Most believe it will not solve the problems, but something needed to be done, so it was passed.

California is bankrupt, with Gov Mr.Terminator asking for 7B help. I am currently reading Krugmann’s book -The Great Unraveling: Losing Our Way in the New Century.

A nice interesting paper on axivrg regarding making a spin valve using inkjet printer ,based on organic conducting polymers.

Also I beginning to wonder if RSFQ is more difficult to integrated for large scale digital high speed systems than before. Some of it is might be due to the parasitics of additional capacitance and inductance. I am still collecting my thoughts on this , I will come up with the entire analysis shortly. But I have to wonder if a system like GALS is the way to go , as some problems are pointed in the paper by Arnold Silver. But the paper is incomplete as they empirically try to scale for current densities that have not been developed yet. I am doubtful of this empirical formula as , the same conditions of scaling might not apply from 4.5 to 50 as they do from 1 to 4.5 KA/cm2. More active elements might be needed, which is not a good thing at all, to increase the speed of the operations.

I am trying to develop the scaling based on information from Hypres’s 1k,4.5k and 20k process. I will also compare it with NEC’s process to be through. I think the problem of capacitive parasitics is more severe than previously thought. Also the biasing problems are more sensitive than noted before. But RSFQ may be the best for mixed signal problems such as digital Transreceivers.