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RFIC system design considerations (Read 4211 times)
cybq
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RFIC system design considerations
Jun 06th, 2006, 11:52pm
 
Anybody will talk about some RFIC specific system design cosiderations? Such as the volatge gain distribution,
IIP3, NF distributions.  The general system design process wil always be modified several times when applying
to circuit design. There need a new effient methodology for the nowaday short time to market competition.

I'll happy to discuss this issue with anyone who are interested in this.

Any experience would be thanksful.  

xmxie
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ACWWong
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Re: RFIC system design considerations
Reply #1 - Jun 7th, 2006, 3:55am
 
the following is a good article decribing the tradeoff's for a GSM system lineup.

http://kabuki.eecs.berkeley.edu/~jrudell/papers/specs/gsms6.pdf

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ymiao
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Re: RFIC system design considerations
Reply #2 - Sep 26th, 2006, 10:45pm
 
Yes, The paper from berkeley is a very good reference for system design.
I hope we can discuss the details of this paper. Now i am doing RFIC sysem design such as NF and IIP3 distributions,etc. The EDA tool I used is Agilent ADS.
Now I have some problems. first, How to design the behavior model of the direct-conversion receiver in NF simulation. If single tone RF input frequecy is set  the same  with LO frequecy. Then the noise power at 0Hz is unbelievable. Then i move the RF input frequency little away from the LO frequency(such as RFin 210.00001MHz  LO 210 MHz), But this cause the mixer NF 3dB above the real situation(This method gets SSB NF while DSB NF in direct-conversion receiver)? How to get more accurate results from the simulation?

Any suggestion or experience are welcomed!
Best Regards!
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