John Abcarius

Title: John Abcarius: Innovator in Digital-to-Analog Conversion Technologies

Introduction

John Abcarius is a prominent inventor based in San Diego, California. He has made significant contributions to the field of digital-to-analog converters and frequency-locked loop architectures. With a total of 5 patents to his name, Abcarius continues to push the boundaries of innovation in his field.

Latest Patents

One of his latest patents is titled "Dynamic current mismatch accumulation schemes for digital-to-analog converters." This patent provides techniques and apparatus for determining dynamic current mismatches in a current-steering digital-to-analog converter (DAC). The technique involves accumulating current mismatches between a DAC cell and a reference cell using a capacitive element, with the polarity of the capacitive element being changed during the accumulation process. This method aims to reduce static current mismatches while enhancing dynamic current mismatches.

Another notable patent is the "Compact frequency-locked loop architecture for digital clocking." This patent describes a relatively compact frequency-locked loop (FLL) that utilizes a discrete-time integrator. The FLL includes a supplemental oscillator and circuitry that allows it to save frequency when a reference clock is disconnected, maintaining a similar frequency during disconnection, and restoring the frequency when the reference clock is reconnected.

Career Highlights

John Abcarius is currently employed at Qualcomm Incorporated, a leading technology company known for its innovations in telecommunications and semiconductor technology. His work at Qualcomm has allowed him to develop cutting-edge technologies that have a significant impact on the industry.

Collaborations

Throughout his career, Abcarius has collaborated with notable colleagues, including Debesh Bhatta and Andrew Weil. These collaborations have contributed to the advancement of technologies in their respective fields.

Conclusion

John Abcarius is a distinguished inventor whose work in digital-to-analog conversion and frequency-locked loop technologies has made a lasting impact. His innovative patents and contributions to Qualcomm Incorporated highlight his commitment to advancing technology.