CMOS CG LNA with cross coupling technique

Hello, sweety
could you please upload schematic?

Hey pavel !

I attached the file...thts the basic schematic which i started with...sorry for late reply though...

thank you...

Hello, sweety
you feed gates of NMOS with rf signal - so they must be separated from bias circuitry through resistors (or chop inductors) - as in your schematic.
Just for curiosity, can you tell me smth of advantages of this schematic? Enhanced gain?

Best regards.

hello...

thank u...but iam not still completely getting it..in the schematic..the input ie., rf signal is feed through source...but by cross coupling we r feeding the ac signal from one source to another gate.
If the resistor is not placed..the signal which is fed from source goes to gnd instead of gate? ....is it right ?

well...their is a degradation of NF approximately 2times compare to normal CG lna..and consumes 2 times less current..


Regards...

Hello !

Yes, you are right - the signal goes to gnd instead of gate.
Thank you for your explanation.

Regards...