David Vieira

Title: David Vieira - Innovator in Phase-Locked Loop Architecture

Introduction

David Vieira is a notable inventor based in San Jose, California. He has made significant contributions to the field of electronics, particularly in the development of phase-locked loop (PLL) architectures. His innovative work has led to the creation of a patent that addresses critical issues in clock jitter reduction.

Latest Patents

David Vieira holds a patent for a low spur phase-locked loop architecture. This invention provides a frequency-synthesizing PLL that incorporates a differential Kvco gain linearization circuit with adjustable DC offset. The design aims to reduce clock jitter effectively. The free-running oscillation frequency of the voltage-controlled oscillator (VCO) is centered near the desired frequency using programmable loads, which minimizes the required control voltage range. The architecture also features a charge pump that compensates for variations in Kvco and an LC tank oscillator with a differential controlled varactor. This innovative differential PLL architecture demonstrates the capability to control the reference spur to below -80 dBc.

Career Highlights

David Vieira is currently associated with Vintomie Networks B.V., LLC, where he continues to push the boundaries of technology through his inventive work. His expertise in PLL architecture has positioned him as a valuable asset in the field of electronics.

Collaborations

David has collaborated with notable colleagues, including James Little and Perry Leigh Heedley. Their combined efforts contribute to the advancement of technology in their respective areas of expertise.

Conclusion

David Vieira's contributions to the field of phase-locked loop architecture exemplify his innovative spirit and dedication to reducing clock jitter in electronic systems. His patent reflects a significant advancement in technology, showcasing his role as a leading inventor in this domain.