thranduil
Member level 1
HI all,
I am currently designing LNA using BFP405 BJT from Infineon at 433.92 MHz. The design goal is to obtain minimal noise figure. During designing I used standard design flow in ADS. Input matching is designed to be optimal GammaS. Everything was fine until I transformed ideal transmission lines into microstrip. The gain lowered and noise figure increased. Now, I can understand losses and thus lower gain, but what happened with noise figure, it shouldn't be affected?
Thanks
I am currently designing LNA using BFP405 BJT from Infineon at 433.92 MHz. The design goal is to obtain minimal noise figure. During designing I used standard design flow in ADS. Input matching is designed to be optimal GammaS. Everything was fine until I transformed ideal transmission lines into microstrip. The gain lowered and noise figure increased. Now, I can understand losses and thus lower gain, but what happened with noise figure, it shouldn't be affected?
Thanks