Jin-Fu Yeh

Title: Innovations by Jin-Fu Yeh in Power Amplifier Linearization

Introduction

Jin-Fu Yeh is a notable inventor based in San Diego, CA. He has made significant contributions to the field of power amplifier technology. His innovative approach focuses on enhancing amplifier linearization techniques, which are crucial for improving signal quality in various applications.

Latest Patents

Jin-Fu Yeh holds a patent for a "Peripheral for amplifier linearization with complimentary compensation." This patent introduces a power amplifier linearization technique that offers a wider linearized power range. The invention proposes two types of linearizers utilizing cross-coupled PMOS and NMOS configurations. The core idea is to employ a complimentary device in relation to the power amplifier (PA) core device. The behavior of the gate-source capacitance (Cgs) of the linearizer is also designed to be complimentary to that of the PA itself. This ensures that the overall Cgs of the PA with the linearizer remains constant, preventing non-linear waveforms. Both linearizers effectively compensate for amplitude modulation to amplitude modulation (AMAM) and amplitude modulation to phase modulation (AMPM). The first type of linearizer can be integrated with PA cores, while the second type can be utilized in the intermodulation network (IMN). Both linearizers demonstrate effective intermodulation distortion (IM3) reduction across different operational corners.

Career Highlights

Jin-Fu Yeh is currently employed at Kyocera International, Inc., where he continues to develop innovative solutions in the field of power amplifiers. His work has been instrumental in advancing the technology used in communication systems.

Collaborations

Jin-Fu Yeh has collaborated with esteemed colleagues such as James June-Ming Wang and Yuh-Min Lin. Their combined expertise has contributed to the successful development of advanced technologies in their field.

Conclusion

Jin-Fu Yeh's contributions to power amplifier linearization represent a significant advancement in the field of electronics. His innovative techniques and collaborative efforts continue to influence the development of high-quality communication systems.