ah.vinod
Junior Member level 2
Hi,
I am designing a TV Rx ckt (circuit). I am having LNA at front end. The LNA is having a S11 of 5dB and S22 of 5dB. Overall Noise figure of system is 6dB.
So i want to know if i change Input impedance matching ckt of LNA to improve S11, will the noise figure of system improve?
Also if i change output impedance matching ckt of LNA to improve S22, will the noise figure of system improve?
Which one of the above two is effective in terms of improving noise figure?
Regards
Vinod
I am designing a TV Rx ckt (circuit). I am having LNA at front end. The LNA is having a S11 of 5dB and S22 of 5dB. Overall Noise figure of system is 6dB.
So i want to know if i change Input impedance matching ckt of LNA to improve S11, will the noise figure of system improve?
Also if i change output impedance matching ckt of LNA to improve S22, will the noise figure of system improve?
Which one of the above two is effective in terms of improving noise figure?
Regards
Vinod