Qi Wu

Title: Innovations of Inventor Qi Wu

Introduction

Qi Wu is a notable inventor based in Chengdu, China. He has made significant contributions to the field of electronics, particularly in the development of advanced amplifier technologies. With a total of 4 patents to his name, his work has garnered attention in the industry.

Latest Patents

One of Qi Wu's latest patents is for a Doherty amplifier. This innovative amplifier design includes first and second input terminals, first and second amplifiers, and an output combiner circuit. The first amplifier features a first amplifier input coupled to the first input terminal, along with a first amplifier output. The second amplifier is designed with a second amplifier input connected to the second input terminal and a second amplifier output. The output combiner circuit is strategically coupled between the outputs of both amplifiers and a final summing node. It incorporates a first inductive element, a first capacitor integrated within an integrated passive device (IPD), and a second inductive element. The first inductive element connects the first amplifier output to a first terminal of the first capacitor, while the second inductive element links a combining node to the first terminal of the first capacitor. The second terminal of the first capacitor is grounded.

Another significant patent involves an output impedance-matching network featuring harmonic-prevention circuitry. This network is designed for an RF power amplifier die and includes a harmonic-prevention circuit that acts as a short circuit at the amplifier's fundamental frequency and as an open circuit at the second harmonic frequency. The harmonic-prevention circuit consists of one or more parallel reactive (LC) legs that resonate at the fundamental frequency, along with a parallel reactive (capacitive) leg that resonates at the second harmonic frequency. This innovative design enhances power transfer and efficiency in RF power amplifiers.

Career Highlights

Qi Wu has worked with prominent companies in the electronics sector, including Intersil Americas Inc. and NXP USA, Inc. His experience in these organizations has contributed to his expertise in amplifier technologies and electronic innovations.

Collaborations

Throughout his career, Qi Wu has collaborated with talented individuals such as Fang Shi and Jin Ming. These partnerships have likely fostered a creative environment that has led to the development of his innovative patents.

Conclusion

In summary, Qi Wu is a distinguished inventor whose work in amplifier technology has resulted in several impactful patents.