Changyul Cheon

Title: Changyul Cheon: Innovator in Resonator Technology

Introduction

Changyul Cheon is a prominent inventor based in Seoul, South Korea. He has made significant contributions to the field of resonator technology, holding a total of 3 patents. His work focuses on enhancing the performance of microwave and millimeter-wave devices.

Latest Patents

One of his latest patents is a resonator that includes a lower substrate with a groove, a dielectric filling the groove, and a material film formed on the inner wall of the groove. This design prevents sudden changes in permittivity between the lower substrate and the dielectric. The resonator also features an upper substrate combined with the lower substrate to form a cavity, along with a conductive thin film that faces the dielectric and has a slot exposing the dielectric. This innovation allows for a reduction in the size of a cavity corresponding to a given resonance frequency by filling it with a dielectric or magnetic material.

Another notable patent is a cavity resonator designed to reduce phase noise in voltage-controlled oscillators (VCOs). This resonator utilizes silicon or a compound semiconductor and a micro-electro-mechanical system (MEMS). The cavity resonator replaces conventional metal cavities with finely processed silicon or compound semiconductor cavities, which are coupled to a microstrip line. This design significantly reduces phase noise in microwaves or millimeter waves output from VCOs.

Career Highlights

Changyul Cheon is currently employed at Samsung Electronics Co., Ltd., where he continues to innovate in the field of resonator technology. His work has been instrumental in advancing the capabilities of microwave integrated circuits.

Collaborations

He collaborates with talented coworkers, including Cimoo Song and Insang Song, who contribute to his research and development efforts.

Conclusion

Changyul Cheon is a key figure in the advancement of resonator technology, with multiple patents that enhance the performance of microwave devices. His contributions at Samsung Electronics Co., Ltd. reflect his commitment to innovation in this critical field.