soi cmos for rfic

Yes.

Yes, it's good.

That's what I get paid to do ;-)

...Jim Thompson

-- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | |

| 1962 | I love to cook with wine. Sometimes I even put it in the food.

SOI CMOS for RF? Why not GaAs or SiGe? SOI CMOS is more of a logic process.

--
  Keith

CMOS is dirt cheap, and incredibly pliable even without SOI. See the paper by Doan et al, in the 2004 IEEE Solid State Conference. His slides are at bwrc.eecs.berkeley.edu/Research/RF/Publication/pubs/Doan_ISSCC04_slides.pdf

Regards, Mikko

Keith Williams skrev:

I believe SiliconWave does (did?) a Bluetooth transciever in SOI, siw1502

-Lasse

Honeywell in Maryland did, though I think that operation is now shut down.

...Jim Thompson

--
|  James E.Thompson, P.E.                           |    mens     |
|  Analog Innovations, Inc.                         |     et      |
|  Analog/Mixed-Signal ASIC\'s and Discrete Systems  |    manus    |
|  Phoenix, Arizona            Voice:(480)460-2350  |             |
|  E-mail Address at Website     Fax:(480)460-2142  |  Brass Rat  |
|       http://www.analog-innovations.com           |    1962     |
             
I love to cook with wine.      Sometimes I even put it in the food.

Thank you All for the comment. But why there are comments on Good things of SOi while some even shut down their plant or production? Will cmos soi become mainstream of cmos roadmap ? How does it benefit analog , Rf and digital domain respectively?

Anyone knows? By the way, Jim, do you design soi cmos circuit for analog or rf circuit? Why did you choose soi for? Low noise or ?

Hear from you all

Thank you

Jason

The question was specifically about SOI. AFAIK, SOI is more of a logic process. Is anyone doing serious RF in SOI? I know there is some analog (PLLs etc.).

--
  Keith

Yield. Reproducibility.

I don't think so. I've yet to see a stable process.

Low stray capacitance to ground. Low crosstalk.

Yes.

High frequency. 1.6GHz GPS receiver.

...Jim Thompson

--
|  James E.Thompson, P.E.                           |    mens     |
|  Analog Innovations, Inc.                         |     et      |
|  Analog/Mixed-Signal ASIC\'s and Discrete Systems  |    manus    |
|  Phoenix, Arizona            Voice:(480)460-2350  |             |
|  E-mail Address at Website     Fax:(480)460-2142  |  Brass Rat  |
|       http://www.analog-innovations.com           |    1962     |
             
I love to cook with wine.      Sometimes I even put it in the food.

We do, I believe. Back in the dim distant days when we made laptops (i.e. before May 2005) we did all the wifi stuff ourselves. Some was SiGe, but not all. We're still supplying Lenovo, as well as a lot of other customers.

Cheers,

Phil Hobbs

IBM T. J. Watson Research Center Yorktown Heights NY

Many (most?) of the ThinkPads use "Centrino Technology", thus the WiFi is Intel's. A quick look shows the T40s, X31s, and R40s are Centrinos, anyway.

--
  Keith

Right, the 2 GHz ones are mostly Intel now--the challenges are at higher frequency.

I know the guy who designs them--they started out with a 900 MHz cordless connection for a modem, way back before wifi. Now they have a

60 GHz transceiver chip working, and 94 GHz in the works. They talked about it at ISSC '05, and are going to again at CICC in September, but I don't have the reference handy.

Cheers,

Phil Hobbs

Phil

The 60GHz transceiver is made in SOI technology or bulk cmos or SIGe?

Thanks

Jason

Thanks Mikko So it is a bulk cmos process.

By the way, anyone here deals with device physics for a SOI device before? I need some advice.

By the way Jim, how do you decide if you would go for fully or partially depleted soi?

Hear from you all

best regards Jason

I didn't. As is often the case, I was stuck with the client-selected process.

...Jim Thompson

-- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | |

| 1962 | I love to cook with wine. Sometimes I even put it in the food.

I misspoke, sorry. The 60 GHz transceiver is SiGe bipolar. It was done by Brian Gaucher's group here at IBM Watson.

Cheers,

Phil Hobbs

If Phil refers to the same Berkeley group I referred to earlier:

that is bulk CMOS. As I am not collaborating with those guys (my colleagues here at VTT do) I'm not up-the-date with the details, though.

Quoting from Doan et al "Design considerations for 60GHz CMOS radios" by Doan et al in the December 2004 issue of the IEEE Communications Magazine (p137): "A wideband general-purpose 60GHz amplifier has been designed and fabricated in a 130nm digital CMOS process with no special analog or RF oprions".

Regards, Mikko

Thanks Jim

:)

Jason