Qingyang Wu

Title: Qingyang Wu: Innovator in Demodulation and Charge Pump Circuits

Introduction

Qingyang Wu is a notable inventor based in Shanghai, China. He has made significant contributions to the field of electronics, particularly in the areas of demodulation circuits and charge pump technology. With a total of two patents to his name, Wu's work showcases his expertise and innovative spirit.

Latest Patents

Wu's latest patents include an Amplitude Shift Keyed (ASK) demodulation pattern and its application in radio frequency identification (RFID). This demodulation circuit features an envelope detector, an alternating voltage amplifier, a differentiator circuit, and a comparator with hysteresis, all connected in series. The envelope detector generates an envelope signal from the received ASK signal, while the amplifier enhances the AC components, resulting in sharper rising and falling edges. The differentiator circuit processes these edges to produce a differentiated signal with positive and negative electrical pulses. Finally, the comparator converts these pulses into a binary data stream that corresponds to the transmitted data stream. This combination of components improves the stability and sensitivity of the ASK demodulation circuit.

Another significant patent by Wu is a charge pump circuit. This circuit includes a switch unit designed to transmit charges from the input to the output. It features a transmission unit that controls the operation of an MOS transistor within the switch unit and a charging unit that corresponds to a PMOS transistor in the switch unit. This design allows for high transmission efficiency even at low source voltages, utilizing a first NMOS transistor and at least two PMOS transistors during charge transmission.

Career Highlights

Qingyang Wu has worked with prominent companies in the semiconductor industry, including Semiconductor Manufacturing International (Beijing) Corporation and Semiconductor Manufacturing International (Shanghai) Corporation. His experience in these organizations has contributed to his development as an inventor and innovator in his field.

Collaborations

Wu has collaborated with notable colleagues such as Jun Zhu and Liwu Yang, further enhancing his work and contributions to the industry.

Conclusion

Qingyang Wu's innovative patents and career in the semiconductor industry highlight his significant contributions to electronics. His work in demodulation circuits and charge pump technology demonstrates his expertise and commitment to advancing technology.