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which technology is now uesd for mobile transeiver

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tieuquaybk

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Could someone tell me which technology is now used for single chip multimode transeiver (GSM 900,1800,1900 a WCDMA).
 

In production lines, 0.25u BiCMOS, 0.18/0.13 CMOS are widely used for their balance of performance/cost/maturity status.
In R&D yuo'll find only CMOS in 90 nm and below.
I hope it can help.
Mazz
 

Thank a lot Mazz. By the way could you tell me how can we desigh BiCMOS (for example LNA) on ADS, and have u got any sample?
As i understand BiCMOS doesn't have a determined structure (i want to say that amount of CMOS and BJT, their strict positions ..) So i cant image how the topology will look like, and how the real fabricated process will be sophisticated in compare with CMOS process.
One more time, thank for your help.
TQBK
 

The design of circuits and the use of Bipolar and/or CMOS is not linked to simulator (ADS or Cadence or ...). Some examples are in ADS package.
To design efficently using tecnologies properly, you should know very well transistors properties, circuits tecniques and tecnology features (plus other stuff).

I'm not able to resume everything in a brief post, but let me suggest you to start from a good book. You'll find a lot in the Forum.
Mazz
 

the use of bipolar or CMOS is not linked to simulator, but their structures concern with topology ( or not?). For examples CMOS is a couple of n-MOS and p-MOS transistor.(rate 1:1). But in BiCMOS circuit i don't see that rule (rate of bipolar vs CMOS elements, their locations to each other).. or we just need design a mixed circuit in which bipolar & CMOS have got the same parameters as in BiCMOS one, and their structure, location will be defined on facbrication process??!!!.
It's kind of you to suggest me some concrete books ( or just the best one :p ).
Thank for ur help
 

i do think you need a book about analog CMOS
 

Let me suggest you a good book:
Gray Meyer: analog integrated circuits, the bible of analog (the only defect is there there is little about CMOS) integrated.
In the forum you can find a lot of references and discussions about this choice.
Max
 

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