Transcript Some Transmission line example

Some Transmission line example
Figure 10.8 A transmission line that is matched at both ends produces no reflections and thus delivers maximum
power to the load.
The load impedance is equal to the characteristic impedance.
: the line is matched (reflection coefficient is zero.)
Microwave & Millimeter-wave Lab.
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Some Transmission line example
Because there is no reflection and no attenuation,
The voltage at the load is 30V, but it is delayed in phase by 1.6
rad.
Thus
The input current is
Microwave & Millimeter-wave Lab.
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Some Transmission line example
The average power delivered to the input of the line by the source
must all be delivered to the load by the line,
Microwave & Millimeter-wave Lab.
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Some Transmission line example
the line is not matched
The input impedance is no longer 300
Standing wave ratio
=466-j206
Capacitive impedance
Microwave & Millimeter-wave Lab.
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