Rearranging equation (2) gives 
2 
1 - (K§ + Ke) (5) 
which clearly shows that any process that increases the sum K2 + Ke) will cause 
the reflection coefficient to decrease. Figure 3 illustrates equation (5) and 
the nonlinear relation of the variables. Note that for a given value of the 
transmission coefficient the reflection coefficient may be very sensitive to 
the amount of energy dissipation. In addition, with no transmission large 
values of energy dissipation will allow the reflection coefficient to be rela- 
tively large. For example, with 90-percent energy dissipation and no trans— 
mission, the reflection coefficient is 0.31 (see Fig. 3). 
Pct Wave Energy Dissipated 
10 20 40 60 80 90 98 98 OY 99.9 
O-Pct Energy 
issipation 
s) 
D 
| 
| 
| 
0 
ORO re 04 0.6 O:60:9 0.98 0.99 0.999 
2 
KG 
Figure 3. Relation between wave reflection, transmission, 
and dissipation coefficients. 
[2 
