Allan Leslie Mullgrav, Jr

Title: Allan Leslie Mullgrav, Jr: Innovator in Calibration Technology

Introduction

Allan Leslie Mullgrav, Jr. is a notable inventor based in Wappingers Falls, NY (US). He has made significant contributions to the field of calibration technology, particularly in the development of systems that enhance the performance of phase-locked loops (PLLs). His innovative approach has led to the creation of a unique patent that addresses critical issues in voltage-controlled oscillators (VCOs).

Latest Patents

Mullgrav holds a patent for a "Coarse calibration circuit using variable step sizes to reduce jitter and a dynamic course calibration (DCC) circuit for a 2 GHz VCO." This calibration system for a PLL includes a phase/frequency detector that is coupled to the output of a VCO and a source of a reference frequency. A charge pump is connected to receive an error signal from the phase/frequency detector, providing a voltage to a low pass filter. The low pass filter then delivers a filtered error signal to the VCO and a comparator system. The comparator system generates an output signal indicating when the polarity of the error signal exceeds a positive or negative limit. The calibration means continuously provides incremental calibration inputs to the VCO after a time delay, ensuring that the frequency of the VCO in the PLL is continuously corrected to compensate for frequency drift and to avoid jitter caused by an excessive rate of response to calibration inputs. He has 1 patent to his name.

Career Highlights

Mullgrav's career has been marked by his work at International Business Machines Corporation (IBM), where he has contributed to various projects that leverage his expertise in calibration systems. His innovative solutions have played a crucial role in enhancing the reliability and performance of electronic systems.

Collaborations

Throughout his career, Mullgrav has collaborated with notable colleagues, including Norman Hugo Walker and Victor Moy. These partnerships have fostered an environment of innovation and have led to advancements in the technologies they have worked on together.

Conclusion

Allan Leslie Mullgrav, Jr. is a distinguished inventor whose work in calibration technology has made a significant impact in the field. His patent for a coarse calibration circuit exemplifies his innovative spirit and dedication to improving electronic systems. His contributions continue to influence the industry and inspire future innovations.