Radio frequency power detection device and system

A radio frequency power detection system, comprising a radio frequency power detection device and a radio frequency power supply;

• wherein the radio frequency power supply is connected to the radio frequency power detection device;
• wherein the radio frequency power detection device comprises:
• a first microstrip line, wherein the first microstrip line is connected to the radio frequency power supply;
• a second microstrip line, wherein the second microstrip line is disposed parallel to the first microstrip line and coupled to the first microstrip line, a predetermined point on the second microstrip line is grounded, and the predetermined point is used to indicate a physical isolation point of the second microstrip line;
• a voltage detection unit, wherein the voltage detection unit is connected to one end of the second microstrip line and is configured to detect a voltage of the second microstrip line;
• a capacitor unit, wherein the capacitor unit comprises a capacitor sub-unit and a control sub-unit, the capacitor sub-unit is connected to the control sub-unit, and the control sub-unit is configured to control an output capacitance value of the capacitor unit based on the capacitor sub-unit;
• the capacitor unit is connected to the first microstrip line and the second microstrip line, or the predetermined point on the second microstrip line is grounded through the capacitor unit;
• the capacitor unit is configured to select different capacitance values according to an actual distance between the first microstrip line and the second microstrip line, to make the actual distance between the first microstrip line and the second microstrip line equal to a preset distance between the first microstrip line and the second microstrip line;
• and
• a distance testing unit, wherein the distance testing unit is connected to the capacitor unit and the voltage detection unit, and the distance testing unit is configured to detect a voltage at the predetermined point;
• the distance testing unit is configured to send a first distance signal to the control sub-unit based on the voltage at the predetermined point being greater than zero, send a second distance signal to the control sub-unit based on the voltage at the predetermined point being less than zero, and send a third distance signal to the voltage detection unit based on the voltage at the predetermined point being zero;
• wherein the first distance signal is used to indicate that the actual distance is less than the preset distance, the second distance signal is used to indicate that the actual distance is greater than the preset distance, and the third distance signal is used to indicate that the actual distance is equal to the preset distance.