Method for measuring error with high power microwave under mismatched load eliminated condition
A high-power microwave and measurement error technology, applied in radiation intensity measurement, nuclear reactors, nuclear power generation, etc., can solve problems such as device inoperability, loss, and ceramic window cracking
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[0078] (1) First, according to the microwave transmission line theory, the relationship between the measured power and the actual power is obtained by analyzing the simplified signal flow diagram.
[0079] a Signal analysis within the transmission line (see Figure 1)
[0080] The signal flow diagram in the waveguide transmission line is shown in Figure 1. The left side of dashed line 1 is equivalent to the signal viewed from the coupled port of the directional coupler to the source; the right side of dashed line 2 is equivalent to the signal viewed from the terminal of the transmission line to the load. When the electrical length d=0, there are:
[0081] V g +V r Г g =V i (7.1)
[0082] V r =V i Г L (7.2)
[0083] From formula (7.1), (7.2) can be solved:
[0084] V i =V g / (1-Г g Г L ) (7.3)
[0085] V r =V i Г L (7.4)
[0086] When the electrical length d≠0, for...
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