EAST-ICRF (Experimental Advanced Superconducting Tokamak-Ion Cyclotron Resonant Heating) transmitter impedance matching and regulating system
An impedance matching and adjustment system technology, applied in transmission systems, electrical components, etc., can solve the problems of insufficient accuracy, time-consuming and laborious adjustment of RF transmitter matching network, etc., and achieve the effect of strong anti-interference ability.
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[0010] See attached figure 1 . Impedance matching network adjustment system, including: directional coupler, double branch, coaxial transmission line, probe, data acquisition card, host computer, programmable logic controller (PLC), stepper motor, detection circuit. Working frequency 20MHz-110MMz. The coupling degree of the probe to the radio frequency signal should be measured with a network analyzer; considering the accuracy of the measurement, the relationship between the DC output of the detection circuit and the radio frequency input has been tested and recorded, and the relationship can be given by a fitting method . In this way, during the entire adjustment process, for the upper computer, there is a definite relationship between the input and output of data, and the entire adjustment process can be smoothly carried out by using the program in the upper computer.
[0011] refer to figure 2 Schematic diagram of the detection circuit. It consists of high-frequency c...
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