This inventor holds 8 USPTO granted patents. Top assignee: Motorola Corporation. Active years: 1977-2000.
Location History:
- Scottsdale, AZ (US) (1977 - 1982)
- Mesa, AZ (US) (1992 - 2000)
Company Filing History:
Years Active: 1977-2000
Title: The Innovations of James H. Stilwell
Introduction
James H. Stilwell is a notable inventor based in Mesa, AZ, who has made significant contributions to the field of telecommunications. With a total of 8 patents to his name, Stilwell has focused on enhancing the performance and accuracy of CDMA cellular base stations. His work has been instrumental in advancing the technology that underpins modern communication systems.
Latest Patents
One of Stilwell's latest patents is titled "Method and apparatus for CDMA code domain parameter estimation." This invention addresses the need for precise measurement of various parameters in CDMA cellular base stations. The method utilizes a modified code domain power measurement technique, which allows for the extraction of individual waveforms from a composite waveform using orthogonal codes. The apparatus includes a chip timing recovery circuit, a reference generator, a multiplier, and a processor, among other components. Additionally, the reference generator is designed to produce an improved reference waveform, enhancing measurement accuracy without necessitating tighter input frequency tolerances.
Another significant patent is the "Sampling phase detector arrangement." This invention is designed for a data bit synchronizer and produces a constant output level in the absence of data bit transitions. By utilizing reference voltages and a switch to select between them, the output only changes when a data bit is detected. This innovation ensures a stable voltage output, which is crucial for reliable data synchronization.
Career Highlights
James H. Stilwell has spent a considerable part of his career at Motorola Corporation, where he has been able to apply his expertise in telecommunications. His work has not only contributed to the company's advancements but has also played a vital role in the broader industry.
Collaborations
Throughout his career, Stilwell has collaborated with several talented individuals, including Carl R. Ryan and Reuven Meidan. These collaborations have fostered an environment of innovation and have led to the development of groundbreaking technologies in the field.
Conclusion
James H. Stilwell's contributions to telecommunications through his patents and innovations have significantly impacted the industry. His work continues to influence the development of more efficient and accurate communication systems.