Hello everyone:

I would like to ask one question about the ratio between bias circuit and main circuit.

I design the LNA.

The bias reference current is 100uA, the main circuit current is 10mA.  

There are two choice to decide the ratio (1) 1:100    (2) 1:10: ~ 10:100 use two branch

(a) Which one is better considering about mismatch,...?

(b) And except simple current mirror, is there any method or reference talk about high ratio (1:100) current mirror?

Thank you very much

Hi  Kob

thank you very much , you helped me ^^