circuitking
Full Member level 5
Hi, I was reading the paper "OPTIMUM DESIGN OF DISTRIBUTED POWER-FET AMPLIFIERS. APPLICATION TO A 2 - 18 GHz MMIC MODULE EXHIBITING IMPROVED POWER PERFORMANCES " and came across this
The output equivalent capacitances Copt, of the transistors have been absorbed into the drain line..
Let's say the output capacitance of a gain stage is Cout and for this gain stage optimum load is Yopt = Gopt+jCopt. It is possible to absorb Cout into artifical transmission line but how can the Copt be absorbed? Usually Copt and Cout values are different, If they are same it is not a problem.
The output equivalent capacitances Copt, of the transistors have been absorbed into the drain line..
Let's say the output capacitance of a gain stage is Cout and for this gain stage optimum load is Yopt = Gopt+jCopt. It is possible to absorb Cout into artifical transmission line but how can the Copt be absorbed? Usually Copt and Cout values are different, If they are same it is not a problem.