Company Filing History:
Years Active: 1991-2003
Title: Hal L Levitt: Innovator in Optical Frequency Measurement
Introduction
Hal L Levitt is a distinguished inventor based in Baltimore, MD (US). He holds a total of 7 patents that showcase his expertise in signal processing and optical frequency measurement technologies. His innovative contributions have significantly advanced the field of electrical frequency measurements.
Latest Patents
Among his latest patents is a groundbreaking invention titled "Multiple simultaneous optical frequency measurement." This signal processing apparatus provides concurrent electrical frequency measurements of multiple, time-coincident signal inputs. The invention involves receiving an input signal containing a plurality of individual signals that are independent in frequency, phase, and electrical amplitude. A power splitter divides the input signal into two separate signals, and a delay line introduces a time delay to one of them. The use of Bragg cells within a channelized optical phase measurement device allows for the modulation of optical carrier signals, leading to the development of an interference pattern that enables precise frequency, phase, and amplitude measurements.
Another notable patent is the "Optical spatial frequency measurement," which also focuses on providing electrical frequency measurements of input signals. This invention utilizes a power splitter to divide an RF input signal and employs an RF channelizer to determine coarse frequency measurements. An optical modulator and a beam splitter work together to extract phase measurements, which are then resolved into a single, absolute phase measurement. The final output combines coarse and fine frequency measurements to enhance resolution.
Career Highlights
Hal L Levitt is currently associated with the USA as represented by the Secretary of the Navy. His work has been instrumental in developing advanced technologies that improve the accuracy and efficiency of frequency measurements. His innovative spirit and dedication to research have made him a prominent figure in his field.
Collaborations
Throughout his career, Hal has collaborated with notable colleagues, including Anthony E Spezio and Edward M Alexander. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.
Conclusion
Hal L Levitt's contributions to the field of optical frequency measurement exemplify his commitment to innovation and excellence. His patents reflect a deep understanding of signal processing technologies, and his work continues to influence advancements in the industry.
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