Thomas K Lisle, Jr

Title: The Innovations of Thomas K Lisle, Jr.

Introduction

Thomas K Lisle, Jr. is a notable inventor based in Baltimore, MD, with a remarkable portfolio of nine patents. His work primarily focuses on advancements in radar technology, showcasing his expertise in digital signal processing and waveform generation.

Latest Patents

One of Lisle's latest patents is the Multi-mode radar exciter. This invention features a radar exciter that includes a direct digital synthesis (DDS) wideband waveform generator. It performs the frequency synthesis function previously handled by a direct analog synthesizer. The innovation derives DDS frequencies, exciter RF frequencies, radar synchronizer clock frequency, and receiver analog/digital (A/D) converter clock frequency from a common signal source, generating a master frequency. This invention eliminates the need for a direct analog synthesizer, relying solely on digital waveform generation through a DDS wideband waveform generator, which ensures coherent frequency and timing relationships.

Another significant patent is the method for imbalance correction of in-phase and quadrature phase return signals. This method corrects phase and amplitude imbalances of I and Q components using digital correction coefficients. The amplitude Gc and phase coefficient Pc are obtained solely in the time domain from a pilot signal. The I and Q components of the pilot signal are sampled over at least one integer cycle, after which the number of samples taken during an integer number of cycles is determined for the component with the steepest slope. The sums of self and cross products are then used to calculate the coefficients.

Career Highlights

Throughout his career, Lisle has contributed to significant projects while working with esteemed organizations such as the United States of America as represented by the Secretary of the Air Force and Westinghouse Electric Corporation. His work has had a lasting impact on the field of radar technology and digital signal processing.

Collaborations

Lisle has collaborated with notable colleagues, including Jerome C Beard and Steven Morrison, further enhancing the innovative projects he has been involved in.

Conclusion

Thomas K Lisle, Jr. stands out as a prominent inventor whose contributions to radar technology and digital signal processing have paved the way for future advancements. His innovative patents reflect his dedication to improving technology in significant ways.