Byung-Kuk An

Title: Byung-Kuk An: Innovator in Frequency Synthesis Technology

Introduction

Byung-Kuk An is a prominent inventor based in Seoul, South Korea. He has made significant contributions to the field of frequency synthesis technology, holding a total of five patents. His innovative work focuses on enhancing the performance and stability of frequency synthesizers.

Latest Patents

One of his latest patents is a frequency synthesizer using a voltage-controlled oscillator (VCO) core of a wideband synthesizer with an integrated VCO. This frequency synthesizer employs a combination of a low divide ratio divider phase-locked loop (PLL) and a wide band, on-chip VCO. To reduce phase noise, low divide ratio phase detection is utilized. By using an off-chip PLL with a bank of on-chip VCOs, the frequency synthesizer achieves enhanced frequency stability while avoiding the need for an acquisition circuit. The separation between the PLL and VCO helps to reduce integer boundary spurs (IBS), thereby eliminating or minimizing the need for a filter bank and switches, which simplifies the overall design of the frequency synthesizer.

Another notable patent is the dual-structure acquisition circuit for frequency synthesis. This wide band frequency synthesizer includes a primary PLL that receives a signal containing both a local signal and a VCO signal mixed together. It generates the tuning voltage based on a phase comparison of the local signal and the VCO signal. If the primary PLL fails to lock onto the output frequency, a secondary PLL (acquisition circuit) can be activated to perform a phase comparison between the reference signal and the VCO signal, generating the necessary tuning voltage.

Career Highlights

Byung-Kuk An is currently employed at Viavi Solutions Inc., where he continues to innovate in the field of frequency synthesis. His work has significantly impacted the development of advanced communication technologies.

Collaborations

He collaborates with talented individuals such as Eduardo Inzunza and Se-Young Eun, contributing to a dynamic and innovative work environment.

Conclusion

Byung-Kuk An's contributions to frequency synthesis technology demonstrate his expertise and commitment to innovation. His patents reflect a deep understanding of the complexities involved in frequency synthesis, paving the way for advancements in communication systems.