AnsweredAssumed Answered

designing lna with good i/p return loss and optimum noise F

Question asked by SUBHASH on Oct 14, 2004
Latest reply on Oct 17, 2004 by RANDY_RHEA
this is with reference to the article published in RF DESIGN march 2002.we can optimize simultaneosly  the lna i/p reurn loss and lna noise figure by using inductive feedback and by adjusting load reflection coefficient.my problem is to find out for what values of load reflection coefficient and the amount of inductor feedback is required we have to map load reflection on to the input plane in smith chart  using following equation 

      Tin=S11 +S12 S21 Tl
                   -------------
                  1-S22Tl

  where Tin----input reflection coefficient
           Tl-----load reflection coefficient


how to plot this in genysys
any suggestions are welcome  

Outcomes