low noise amplifier design help

[bpramee]

hi all...
thanks 4 ur reply..
im using NE76000 mesfet model 4 my lna.my vdd is 3.3v. how will i select the bias to be given 2 the mesfet gate terminal after plotting the iv chara.. nothing specifically is given in the datasheet.. in one book it is given that 4 low noise n high power gain id is raised to 0.9idss..
while i plotted the id-vds chara i got idss as 25mA which is almost similar to the plot that is given in datasheet.. what -ve supply should i give..
please help..
thanks..

 

[VSWR]

The data sheet at **broken link removed** already proposes a bias of 3 V and 10 mA.

How to design bias circuit for an RF amplifier is found here: **broken link removed**

and amplifier design tutorial incl noise figure optimization: **broken link removed**

 

[vfone]

I translate: 4=for, 2=to, n=and, ur=your ... but what is "chara"?

 

[keith1200rs]

chara = lazy?

Keith