Yun-mo Kang

Title: Innovations by Inventor Yun-mo Kang

Introduction

Yun-mo Kang is a notable inventor based in Seoul, South Korea. He has made significant contributions to the field of electronics, particularly in the development of advanced technologies. With a total of 2 patents, his work showcases innovative solutions that address contemporary challenges in the industry.

Latest Patents

One of Yun-mo Kang's latest patents is a frequency conversion mixer. This invention includes a transconductance stage, a switching stage, a load stage, a current bleeding circuit, and a bias stage. The transconductance stage receives an RF signal and outputs a current corresponding to the voltage of the RF signal. The switching stage switches the current outputted from the transconductance stage in response to a local oscillation signal, facilitating the frequency conversion of the RF signal into an intermediate frequency (IF) signal. The load stage connects between the switching stage and a supply voltage terminal. The current bleeding circuit is connected in parallel with the switching stage, embodying an inverter structure with the transconductance stage to achieve both current bleeding and current reuse effects. Additionally, it includes a resonant inductor to reduce noise generated in parasitic capacitance at the node between the transconductance stage and the switching stage. The bias stage connects between the transconductance stage and a ground terminal, utilizing a switched biasing technique to ensure stable bias current while lowering flicker noise.

Another significant patent by Kang is a hinge assembly and mobile terminal. This invention features a hinge assembly that includes a torsion spring, a shaft penetrating through the torsion spring, and a bushing coupled to one end of the torsion spring and one side of the shaft. The holder is coupled to the other end of the torsion spring, allowing the shaft to penetrate through it. A sliding cam is coupled to the other side of the shaft and moves in linkage with the shaft, while a fixed cam engages the sliding cam. A compression spring is positioned between the holder and the sliding cam, ensuring that the sliding cam remains in close contact with the fixed cam. The housing couples to the holder and the fixed cam, enabling the mobile terminal to unfold automatically with minimal parts and without energy consumption.

Career Highlights

Yun-mo Kang has worked with prominent organizations such as the Electronics and Telecommunications Research Institute and the Industry-University Cooperation Foundation at Hanyang University. His experience in these