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Would you:
-By theory input matching of CG-LNA should be 1/gm. Do CG-LNA require network matching, if yes, please send some papers or topology.
-I did input matching by shunt capacitor and serios resistor but gain is very low and NF is realy high which is far from CG-LNA subject.
enclosed...
what's the advantage and disadvantage two/three stage LNA in term of NF, linearity and voltage gain? (source please)
Same question about differential LNA? (source please)
TX
What's the cascode current mirror output impedance and best transistor size ratio?
what the best way to increase output impedance for source follower (with paper source please).
Re: Mixer Learning [hlp]
Hi
Books:
-Razavi: RF micro electronic, give you whole system picture. Very good to get system idea
(I called it Macro view).
- I recommend, Calvin plett, john Rogers and Lee RF books, as a circuit level design. Very simple explanation but in BJT. (Micro view, circuit...
Re: Recommend a tutorial/book on UWB, that has a practical s
you can find basic idea from
-Book: Underestanding UWB radio fundamentals, by Giancola (system level)
-I have attached the toturial as well. (General information)
Cheers
digitalazation
May I ask:
-Instead of direct convertion Mixer, may I used direct RF sampling Mixer for UWB?
RF digitalazation
if yes/not please expalin why? (Advantage, disadvantage)
What is better method for NBI: direct conversion or down conversion mixer with IF<0?
May I ask:
Which one has a better performance in term of NBI/intermodulate cancellation.
-Direct conversion (IF=0) , or down conversion mixer with lower IF?
-for your reason, please introduce some...
UWB mixer
you are right, but we use mixer to relax LPF with Lower Q in NB system.
Without mixer it will be impossibl. But in UWB we don't have this problem...
LPF Q, will be low which is doesn't require any Mixer.(I think)
May I ask:
-Why we need mixer in UWB or any wideband system?
-NB system, requires Mixer due to reduce filter Q factor but for UWB, Q factor will be 3-5, which is low enough for relax design.
Thanks
Hi, There are some papers about that. first choose your bandwith, and then papers.
Review that one.
https://ieeexplore.ieee.org/iel4/75/10339/00481855.pdf?tp=&isnumber=&arnumber=481855
Book: LNA-codesign for fully integrated CMOS wireless receivers, by paul leroux
Cheers
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