Company Filing History:
Years Active: 2005-2008
Title: The Innovations of William Eric Holland
Introduction
William Eric Holland is a notable inventor based in Lynchburg City, VA (US). He has made significant contributions to the field of technology, particularly in the area of frequency synthesizers. With a total of 2 patents to his name, Holland's work has had a considerable impact on Bluetooth applications.
Latest Patents
One of his latest patents is a fractional-N baseband frequency synthesizer designed for Bluetooth applications. This innovative baseband clock synthesizer is capable of generating either 12 MHz or 13 MHz clock signals from various reference clock signals, such as 12.00, 12.80, 13.00, 15.36, 16.80, 19.20, 19.44, 19.68, 19.80, and 26.00 MHz. The design incorporates a fractional-N frequency divider implemented with a phase-locked loop (PLL) that includes a variable divider. This allows the synthesizer to utilize virtually any reference frequency input to generate a locked 156 MHz clock signal, which serves as the basis for the 12 MHz or 13 MHz baseband clock signal. Additionally, a residue feedback sigma-delta modulator provides a varying integer sequence to an integer divider in the feedback path of the PLL, enabling division by non-integer numbers. This innovative approach allows the PLL to be referenced to virtually any clock while still providing a fixed output clock signal.
Career Highlights
Holland is currently employed at Agere Systems Inc., where he continues to develop cutting-edge technologies. His work has been instrumental in advancing the capabilities of Bluetooth devices, making them more efficient and versatile.
Collaborations
Throughout his career, Holland has collaborated with talented individuals such as Wenzhe Luo and Zhigang Ma. These partnerships have fostered innovation and contributed to the success of their projects.
Conclusion
William Eric Holland's contributions to the field of technology, particularly in frequency synthesizers for Bluetooth applications, highlight his innovative spirit and dedication to advancing the industry. His patents and collaborations reflect a commitment to excellence in engineering and invention.