Company Filing History:
Years Active: 2001-2002
Title: Innovations of Andrew S. Parker
Introduction
Andrew S. Parker is a notable inventor based in Redondo Beach, California. He has made significant contributions to the field of high power amplifiers, holding 2 patents that focus on advanced predistortion methods. His work is instrumental in improving the performance of nonlinear high power amplifiers.
Latest Patents
Parker's latest patents include a "High power amplifier linearization method using extended Saleh model predistortion." This method utilizes an extended Saleh model to linearize the output of nonlinear high power amplifiers, addressing inherent amplitude modulation to amplitude modulation distortion and amplitude modulation to phase modulation distortion. The complex baseband linearizer he developed provides predistortion at baseband, which reduces spectral regrowth and enhances bit error performance. The predistortion effects are specifically matched to the amplifier distortions, effectively canceling them out to achieve linearized conversions.
Another significant patent is the "High power amplifier linearization method using modified linear-log model predistortion." This method employs a modified linear-log model to linearize the output of nonlinear high power amplifiers, similar to his previous work. It also aims to reduce clipping effects through the peak operating point for a specified output power loss while minimizing distortion.
Career Highlights
Andrew S. Parker is currently associated with The Aerospace Corporation, where he applies his expertise in amplifier technology. His innovative approaches have contributed to advancements in the field, making him a respected figure among his peers.
Collaborations
Parker has collaborated with notable colleagues such as Tien M. Nguyen and James Yoh, further enhancing the impact of his work in the industry.
Conclusion
Andrew S. Parker's contributions to high power amplifier technology through his innovative patents demonstrate his commitment to advancing the field. His work continues to influence the performance of amplifiers, showcasing the importance of innovation in engineering.