Wireless voltage sensor and preparation method thereof

• Main Authors: YE HUAIYU, ZHANG GUOQI, LIU RAN, WAN JING
• Format: Patent
• Language: Chinese; English
• Published: 08.05.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; SEMICONDUCTOR DEVICES; TESTING

The invention provides a wireless voltage sensor and a preparation method thereof. AC high voltage on a power transmission line is converted into DC low voltage through a rectification circuit, a voltage signal is converted into a frequency modulation type radio frequency signal through the voltage sensor, and part of transistors in the sensor are replaced by resistance wires, so that the occupiedarea is reduced, and the whole structure of the circuit is enabled to be simpler. In addition, a resistance oscillator is established on a gallium nitride/aluminum gallium nitride heterojunction substrate with high electron mobility, and a transmitting end does not need complex buffer amplification, digital-to-analog conversion and a central controller. Meanwhile, the advantages of high-voltage breakdown resistance, high anti-interference capability and high transmitting frequency are achieved. 本发明提出一种无线电压传感器及其制备方法，电力传输线上的交流高压经整流电路转换为直流低压，通过该电压传感器将电压信号转换为调频制式的射频信号，传感器中的部分晶体管替换成电阻丝，减小了占用面积，使得电路整体结构更加简单，此外电阻振荡器建立在氮化镓/铝