70950

Current reflection factor

The currcnt reflection factor T iis defincd by

r 1=

Ir€ y 7.

Ire-yz. (2.76)

This deflnition is the obvious dual of the previously given definition in equation 2.52 for voltage reflection factor. Substituting for Ifand Ir in terms of Vf and Vrfrom equations 2.48 and 2.49 we find that Ti=-rv. (2.77)

Then the relations between V iand y are seen to be

T i =

y-1

y+I

(2.78)

and y =

I + Ti

i — r«

• (2.79)

These results now correspond in form to those of equations 2.70 and 2.69, a fact we will make use of when we study in Chapter 3 the Smith Chart.

Notę that the current reflection factor V \ transforms along the linę in the same way as does the voltage reflection factor f v, i.e.