Sunday, April 19, 2009

Power and energy

It's a topic which pops up in this blog quite often. Here are a couple more interesting links:

Moving slightly aside from the topic, but putting it in a much wider focus, the subjects of power consumption, power management and the so-called "smart grid", should in my opinion be looked at from a global perspective. In that respect, this interesting article in the washington post looks into what I think is the most important problem in the new energy era: energy transport and its consequences.

Famous engineers

Via anablog, an amusing list of people I didn't know were engineers. I live on a street dedicated to one of them, which makes it the second place in a row where I live which is dedicated to an engineer, the previous one being Karl Ritter von Ghega.

One thing I will dispute with the writer is the ineptness of Edmund Blackadder.

Leakage power

A short overview on the problem of leakage in CMOS designs and what are people doing about it.

Interestingly, it is not only a problem for the obvious reasons, but for reasons which have much wider implications: "Leakage power analysis attack on cryptographic device realized in CMOS 90-nanometer technology". Which I guess links perfectly with this.

Plucked from the interweb

A list of miscellanous articles found in the last couple of weeks:

3-D packaging

Movements in this area:

Brains

One of the nice things of working in a research institute with a university nearby is that you can collaborate in very interesting projects.

Case in point. Some researchers from the Faculty of Medicine are working on brain interfaces. They use this chip, developed by colleagues in my group. They ask volunteers to participate in their experiments, and there I go:

Basically, they digitize EEG signal from 8 probes and correlate the waveforms with the stimuli. That way, I could type my name in the computer by "concentrating" on the letters I wanted to write. It still needs work, but the basic tools are there, and it's a matter of refining the algorithms.

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While we are on the subject of brains, and if I may step aside from the main theme in this blog, allow me to recommend this recent article by Carl Zimmer, and this fantastic documentary.

Sunday, April 5, 2009

PSP vs. BSIM4

From the Electronics Letters issue of 24th March 2009: "Accuracy of PSP and BSIM4 models in determination of IP3 compression point" by A. Brambilla, G. Storti Gajani and C. Guardiani:

[...] Parameters of both the PSP and BSIM4 models adopted in the comparison have been fitted to a leading-edge 45 nm RF technology. The benchmarks show that the BSIM4 model is unable to capture the IP3 compression point whereas the PSP model yields the expected behaviour, thus enabling the determination of the correct value of IIP3.