Changjun Liu

Title: Changjun Liu: Innovator in Microwave Technology

Introduction

Changjun Liu is a prominent inventor based in Sichuan, China. He has made significant contributions to the field of microwave technology, holding a total of six patents. His work focuses on innovative systems that enhance the efficiency and functionality of microwave sources.

Latest Patents

Changjun Liu's latest patents include an "Injection-locked magnetron system based on filament injection." This invention features a magnetron, an excitation cavity, and a load, designed to receive and couple an injected external signal into the magnetron for injection locking. The system utilizes a monopole antenna to inject the external signal, which is then coupled into the magnetron resonant cavity through a magnetron filament. The output microwave is directed through the excitation cavity and a waveguide directional coupler, ultimately being absorbed by the load.

Another notable patent is the "Method of controlling transmitting frequencies of microwave source and microwave transmission system thereof." This invention outlines a method for controlling the transmitting frequencies of a microwave source by collecting reflection frequencies of a load, calculating change rates, and sending control signals to tune the transmitting frequencies. This method can be applied to both single and multiple magnetron tube systems.

Career Highlights

Changjun Liu is affiliated with Sichuan University, where he continues to advance research in microwave technology. His innovative work has garnered attention in the academic and industrial sectors, contributing to the development of more efficient microwave systems.

Collaborations

Changjun Liu has collaborated with notable colleagues, including Yang Yang and Kama Huang. Their combined expertise has furthered advancements in microwave technology and innovation.

Conclusion

Changjun Liu's contributions to microwave technology through his patents and research at Sichuan University highlight his role as a leading inventor in this field. His innovative approaches continue to influence the development of efficient microwave systems.