CHAPTER 3 - Foundations of RF & Microwave Circuit Characterisation
138
Figure 3.4-4 Reflected voltage travels back towards the generator and adds to the incident one
The reflection coefficient for the current in this case is
We may also simulate the time domain transients illustrated in this section by using the
transient simulation tools in Microwave Office as shown in video 3.4
3.4.3 Power considerations
The final remark of this section is on power. From the calculation below you may see that it is
inevitable to lose some power if the line is not matched!!
is
the power delivered to the load when the line is matched. and are the powers
delivered to a 100 Ω and 25Ω load respectively.
I
E
2E
E
E
E →
E
3
2
E
3
1
E
E
3
2
Z
L
I I I
3
4
3
1
I +
I
3
1
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