#### bcdeepak

##### Member level 5

previously i asked some doubts about the inductively degenerated LNA , which i designed

i got a doubt about the inductor value ...........

the LNA is designed such that the input impedance at the operating freq of 2.4GHz is 50 ohm

and S11 graph shows the matching curve .

S11 dip is occuring at freq 2.4GHz with a value of -25 db and i drew the input impedance curve Zin and the value @2,4GHz is 55 ohm .

the thing is ....... i am using an inductor of 0.05 nH ....... then only the input resistance is 55 ohm........ is 0.05nH inductor available in ICs ?????????

or am i doing wrong in seeing the input impedance ????

how to know whether the input impedance is 50 ohm or not @ the operating freq ?? just by plotting Zin