This inventor holds 14 USPTO granted patents. Top assignee: U.S. Philips Corporation. Active years: 1977-1988.
Location History:
- Crawley, EN (1977 - 1978)
- Horsham, GB (1981 - 1986)
- Faygate, GB (1980 - 1988)
Company Filing History:
Years Active: 1977-1988
Title: Michael J Underhill: Innovator in Frequency Synthesis Technology
Introduction
Michael J Underhill is a prominent inventor based in Horsham, GB, known for his significant contributions to the field of frequency synthesis technology. With a total of 14 patents to his name, Underhill has made remarkable advancements that enhance the performance and reliability of frequency synthesizers.
Latest Patents
Among his latest innovations is the "Wide Range Frequency Synthesizer with Reduced Jitter." This invention features a frequency synthesizer that utilizes a reference frequency source and frequency reduction means to cancel pulses from a frequency to be reduced. It incorporates a jitter compensation signal circuit designed to mitigate any jitter in the output frequency caused by each cancelled cycle. The jitter compensation signal is derived from a jitter-containing pulse train through a d.c. removal circuit and an integrator. Additionally, a perturbation signal is injected by a control device, allowing for precise adjustments to the frequency, further enhancing jitter reduction.
Another notable patent is the "Jitter Reduction Circuit for Frequency Synthesizer." This invention predicts the phase jitter caused by pulse cancellation and generates a compensation signal that accurately compensates for this phase jitter. The compensation signal is derived directly from a pulse train within the synthesizer, which also contains jitter, utilizing a d.c. removal circuit and an analogue integrator.
Career Highlights
Michael J Underhill is currently associated with U.S. Philips Corporation, where he continues to innovate and develop advanced technologies in frequency synthesis. His work has significantly impacted the field, leading to improved performance in various applications.
Collaborations
Underhill has collaborated with notable colleagues, including Michael A Clark and Peter Anthony Jordan, contributing to a dynamic and innovative work environment.
Conclusion
Michael J Underhill's contributions to frequency synthesis technology exemplify his dedication to innovation and excellence. His patents reflect a deep understanding of the complexities involved in frequency synthesis, making him a key figure in this field.