Robert R Harnden

Title: The Innovations of Robert R. Harnden

Introduction

Robert R. Harnden is a notable inventor based in Redondo Beach, California. He has made significant contributions to the field of multi-carrier signal processing, holding a total of 2 patents. His work focuses on enhancing the efficiency and performance of digital-to-analog conversion systems.

Latest Patents

One of Harnden's latest patents is titled "Feedforward amplitude cancellation topology for multi-carrier applications." This invention describes a multi-carrier receiver system that utilizes a feedforward cancellation loop to improve the reception of transmission frequency multi-carrier signals. The system generates an intermediate frequency multi-carrier signal and produces an amplitude corrected multi-carrier signal, which reduces the dynamic range requirements for the primary A/D converter. This innovation allows for effective processing of multi-carrier signals without the need for large dynamic range requirements.

Another significant patent by Harnden is "Apparatus and methods for digital-to-analog conversion." This invention provides a method for converting digital input signals, which may include multiple carrier signals, into analog signals for transmission. The apparatus employs a series of delta-sigma modulation loop circuits to reduce the word length of the input signal while maintaining an acceptable signal-to-noise ratio. The design incorporates both CMOS and indium phosphide gates to achieve high-resolution, wide-band RF multiple-carrier signal conversion.

Career Highlights

Robert R. Harnden is currently employed at Northrop Grumman Systems Corporation, where he continues to innovate in the field of signal processing. His work has had a substantial impact on the development of advanced communication systems.

Collaborations

Throughout his career, Harnden has collaborated with notable colleagues, including Kenneth Weber and Mark Kintis. These partnerships have contributed to the advancement of technology in their respective fields.

Conclusion

Robert R. Harnden's contributions to the field of multi-carrier signal processing and digital-to-analog conversion demonstrate his innovative spirit and technical expertise. His patents reflect a commitment to improving communication technologies, making him a significant figure in the industry.