Zhilin Liu

Title: Zhilin Liu and His Frequency-Mixer Invention.

Introduction

Zhilin Liu is an inventor associated with Nanjing, China, and Southeast University. His work includes a patent for a transconductance-enhancing passive frequency mixer, a circuit design intended to improve performance while reducing power consumption.

Latest Patents

Liu is credited with 1 patent: “Transconductance-Enhancing Passive Frequency Mixer.” The invention combines a transconductance amplification stage, a frequency-mixing stage, and an output transresistance amplifier. Its pre-amplification structure increases transconductance, allowing the circuit to achieve a given transconductance value with lower bias current. The mixer modulates a radio-frequency current to produce a mid-frequency current signal, which the transresistance amplifier converts into a voltage output. The amplifier’s transconductance-enhancing structure further reduces input impedance and is designed to improve current utilization and port isolation. The patent describes the mixer as offering low power consumption, high conversion gain, and good port isolation.

Career Highlights

Liu’s listed patent reflects work on radio-frequency circuit design, particularly techniques for improving passive frequency-mixer performance. His affiliation with Southeast University connects his inventor profile with the university’s research environment.

Collaborations

The provided information lists Chunfeng Bai and Xudong Wang as Liu’s coworkers. Their names are associated with his professional context, though specific roles in the patent are not stated in the supplied details.

Conclusion

Zhilin Liu’s patent presents a frequency-mixer design focused on enhancing transconductance, reducing power requirements, and improving conversion and isolation characteristics.