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Hi, guys,
What is the highest voltage gain of LNA (single stage, either single-ended or differential) you found in all of the top publications? Of couse it should also demostrate ellegant NF.
Thanks.
Hi,
What does the data of PORTn.NC.vnc stand for in @DS SP simulation? input referred noise? output-referred noise? or something else?
Also, what does nf(1) and nf(2) stand for? little information can be found in the @DS document.
Thank you very much.
If possible, please also advice how to...
ads inductor fitting
Hi,
In inductor modeling, I found that although Y parameters (my Q and L are extracted from Y parameters) fit well, the S parameters fittings are nasty (dB(S11) differs about 8dB). This really confuses me, which one should I use to fit my inductor??
What cause this kind...
Hey, guys,
I'm modeling inductors by fitting quality factor and inductance, and the fittings are pretty good now. However, I found that although Y parameters (my Q and L are extracted from Y parameters) fit well, the S parameter fittings are nasty (dB(S11) differs about 8dB). This really...
Re: Quick question: why does Q of spiral inductor have a pea
Hi, James and Jian,
I never expect this post will arouse such an enthusiasm! Two thumbs up!
IE3D and Sonnet, I'll recommend these tools to my boss!
God bless both of you.
Re: Quick question: why does Q of spiral inductor have a pea
Thank you, Dr. Rautio,
You said that at low frequency, the inductance goes to zero, but if you use L=-1/2/pi/freq/imag(Y11) to extract the inductance, you'll find that the inductance at low frequency is actually very large.
And...
Re: Quick question: why does Q of spiral inductor have a pea
Hi, wlcsp,
Thanks for reply.
I know the loss when freq. get high, this could be the explaination for the quality factor to go down, but why Q rises at first and gets a peak?
Hi, all,
Why does the quality factor of the on-chip spiral inductor have a peak? I mean what dominate the loss at low freq. and what at high freq.?
Thanks.
Hi, all
I'm designing a low noise amplifier working @5GHz, however, the stability is a big big problem to me, can anyone suggest me something to read??
And, The magnitude of S22 of the amplifier is larger than 1, how am I gonna do??please help me out!!
Thank you.
n-mos triple well
Hi,
Does anyone here know the pros and cons of the triple-well NMOS? Is there any paper relating to this topic?
(so far, I only know that the triple-well NMOS results in good isolation)
Best Rgs.
Hi,
I've been reading some papers on the common gate LNA recently. I'm confusing by one of the noise issues: most of the papers say that the channel induced gate noise is decoupled and should be neglected, however, the other papers do account for the gate noise in the noise calculation. I'm...
Re: Why do I get a negative Re(Zin) while performing SP in A
Hi,
I surely have checked the bias conditions, they're definitely in the active regions.
I apprecitate if you have a shot at this circuit with SP simulation.
Thank you.
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