Company Filing History:
Years Active: 1998-2010
Title: Michael David Leffel: Innovator in RF Amplification Technology
Introduction
Michael David Leffel is a notable inventor based in Crystal Lake, IL (US). He holds a total of 10 patents that showcase his contributions to the field of radio frequency (RF) amplification technology. His innovative work has significantly impacted the way RF signals are processed and amplified.
Latest Patents
Among his latest patents is a predistortion system and amplifier designed to address group delay modulation. This invention includes an RF power amplifier and a predistortion circuit that is coupled to the power amplifier. The predistortion circuit modifies the input path of an RF input signal to the power amplifier. It is capable of detecting the level of an input signal and generating a delay in the input path based on that level. This advancement allows for predistortion correction of a new distortion term, AM/DM, in addition to the well-known AM/AM and AM/PM terms. The AM/DM term represents distortion caused by the delay modulation of the input signal as a function of the envelope power variation within the input signal.
Another significant patent focuses on the independence between paths that predistort for memory and memory-less distortion in power amplifiers. This predistorter is designed to reduce spurious emissions in an amplified signal. It includes a first path configured to generate memory-less distortion correction and one or more second paths for memory distortion correction. The paths are equipped with dynamically controllable delay circuits, ensuring that the memory-less and memory distortion corrections remain independent, regardless of the frequency of the predistorter’s use.
Career Highlights
Michael has had a distinguished career, working with prominent companies such as Motorola Corporation and Andrew Corporation. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking advancements in RF technology.
Collaborations
Throughout his career, Michael has collaborated with notable individuals, including Edward Vincent Louis and Douglas Edward Miller. These partnerships have fostered innovation and have been instrumental in the development of his patented technologies.
Conclusion
Michael David Leffel is a significant figure in the realm of RF amplification technology, with a portfolio of patents that reflect his innovative spirit and technical expertise. His contributions continue to influence the industry and pave the way for future advancements.