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Dear all,
As far as I know, the MIMO technique can increase the data thoughput by receiving separate information from different antennas.
And, diversity is used to increase the SNR.
Several questions.
1. Why does the LO phase requires to be synchronized between Primary and Diversity signal?
2...
spectrerf pnoise
In a simulation with pnoise. We can obtain DSB Noise Figure and SSB Noise Figure
by selecting the result menu. The pnoise result also provide "Output noise".
My question is that the output noise is belong to SSB noise or DSB noise?
Thanks,
1. Why do we measure the VCO amplitude spectrum to obtain the phase noise?
What we want is phase noise but amplitude noise, how can we measure the
amplitude spectrum?
2. How to correlate the amplitude noise to phase noise in this measurement?
Thanks,
Re: Please recommend the entry-level material of fractionalN
Ya, the operation of divder is my problem. I do not know how the accmulator
operates and how sigma-delta modulator work wth divider. I have read several
materials but they didn't give very detailed explaination. So I look forward to...
I would like to realize the principles of fractional N PLL, its problems and solutions,
please recommend the reference material which describes those topics in more
details and step by step. Thanks,
How to decide the current bias of input stage and output stage of folded cascoded
opamp? In some text books which suggest us to use larger current for input
stage to boost gm, and use less current for output stage to increase ro.
But, I got a problem, the opamp linearity is poor in higher...
I import a layout from tsmc inductor from virtuso to momentum. Do you mean
I need to make the metal trance intro polygon? the polyline is in momentum or virtuso?
thanks,
import gds in momentum
I alwasy met off-grid problem when I import the virtuso file to ads momnetum
in gds format. How to avoid this?
Any setup do I need to care when I perform the "stream out" in cadence?
Thanks,
how to use asitic
I saw the website of asitic, it told me asitic can help me design balun.
But I don't know how to do this. Anyone know how to use asitic to
do that?
Hwo to bias opamp which is used to force two nodes voltage eaual?
If we use PTAT current generated by bandgap core itself, another loop is created.
The stability is also a problem?
How to bias this opamp?
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