ibm's new fast transitor

[2dye4]

In all the press over IBM's new 500 Ghz chips they
state this will allow cell phones to download a
High Def movie in 5 seconds.

Wouldn't such application need also enormous RF spectrum.

The IBM head semiconductor researcher is the one who
stated this application.

??????

 

[nbucska]

he may have used this simile to illustrate the possibilities of the new technology.

Plesae read FAQ240-1032
My WEB: <

http://geocities.com/nbucska/>

 

[MacGyverS2000]

The statement should have been something similar to "You could download an HD movie in 5 seconds, assuming the bandwidth to do so is available."


Dan - Owner

http://www.Hi-TecDesigns.com

 

[2dye4]

Quote

Meyerson forecasts that the advances will show up in real products within a couple years, probably in chips to power super-fast wireless networks capable of transmitting a DVD-quality movie in as little as five seconds.

Hype!

 

[nbucska]

I don't believe it but so what ? Either he or I can be wrong.

Plesae read FAQ240-1032
My WEB: <

http://geocities.com/nbucska/>

 

[MacGyverS2000]

I believe the chip will be capable, but not the network... weakest link in the chain theory at work.

My computer can do millions of calculations per second, but if my 9600 Baud modem can't transmit the data, what's the point?


Dan - Owner

http://www.Hi-TecDesigns.com

 

[sreid]

The 500 GHz is probably the ft of the transistor. Darned high but the speed in a digital circuit will be much lower.

 

[Comcokid]

Neat. So they can do 500 GHz with a silicon transistor. But what does it mean in terms of technology the next few years? - Absolutely Nothing!

This is a good example of a research result being media-hyped into pure fiction.

A cell phone that operates at 5 degrees Kelvin is just a little hard to hold and talk into. Not to mention the lab full of cooling equipment needed to keep it cold!

 

[VisiGoth]

I think the point is that high speed digital SiGe could have a lower power per transition at a given high frequency. For cell phones clock control is a good way to only use as fast a clock as needed since power is not linear with frequency. As operating voltages go lower, enabled by SiGe, then the energy in the capacitance goes lower, allowing more clocks to click for the same Joules.

I agree with 2dy4, the technology that enables the BW will be the key, not the digital technology. This was a headline grabber to put the impact of this in scope for the masses.

IBM already owns the IP for SiGe-C (with carbon) used in cell phones today for the RF. This is an important contribution that benefits humanity.

 

[pstuckey]

In the US there is 7 GHz of unlicensed sprectrum at 60 GHz (57-64 GHz). Wireless up there has to deal with Oxygen absorbtion (~15 dB/km), which is bad for range, but good for frequency re-use. There is a lot on ongoing research to use that spectrum for short range (maybe a couple hundred meters), high data rate comms (see also IEEE802.15.3 WG).

Peter

 

[VEBill]

"...will allow cell phones to download a High Def movie in 5 seconds."

So, given quick fingers, one could actually have a monthly 'cell-phone' bill of around $10 million - not including air-time...

[Assumed $20 HD file every five seconds - YMMV]

 

[powerjunx]

yea, ve1bll, i agree.

Network provider's revenue will swell, ibm as well. What a breakthrough!

Maybe you could post its pros and cons.