- #1

The Tortoise-Man

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Assume we have a general rf system where source with impedance ##Z_S##

transfers a signal to a load with impedance ##Z_L## through a transmission

line with impedance ##Z_T##. We want to match this system

in order to maximize it's effiency:

In

https://en.wikipedia.org/wiki/Impedance_matching

there are two options how to do it if we deal with power transfer

from source to load through a transmission line:

There is one way to to maximize the power transfer; the

condition that should be fulfilled is ##Z_S = Z^*_L## and on the

other hand there is a way to minimize the reflexion of the signal waves.

To do this the relations between the source and transmission line

should satisfy ##Z_S=Z_T## and and between

load and transmission line ##Z_L=Z_T##.

Obviously, it is not possible (if the system contains reactant components)

to fulfill both conditions, ie to maximize the power transfer AND

to minimize the signal wave reflexion.

My question is what to do in such situation? How to decide what to do

here in order to run the system with best effiency? How to decide

what is more important: to maximize the power transfer or

to minimize the signal wave reflexion? Is there a kind of guide

how to decide in such or similar cases?

transfers a signal to a load with impedance ##Z_L## through a transmission

line with impedance ##Z_T##. We want to match this system

in order to maximize it's effiency:

In

https://en.wikipedia.org/wiki/Impedance_matching

there are two options how to do it if we deal with power transfer

from source to load through a transmission line:

There is one way to to maximize the power transfer; the

condition that should be fulfilled is ##Z_S = Z^*_L## and on the

other hand there is a way to minimize the reflexion of the signal waves.

To do this the relations between the source and transmission line

should satisfy ##Z_S=Z_T## and and between

load and transmission line ##Z_L=Z_T##.

Obviously, it is not possible (if the system contains reactant components)

to fulfill both conditions, ie to maximize the power transfer AND

to minimize the signal wave reflexion.

My question is what to do in such situation? How to decide what to do

here in order to run the system with best effiency? How to decide

what is more important: to maximize the power transfer or

to minimize the signal wave reflexion? Is there a kind of guide

how to decide in such or similar cases?

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