David Henry Hoe

Title: David Henry Hoe: Innovator in Delta Sigma Modulation

Introduction

David Henry Hoe is a notable inventor based in Schenectady, NY (US). He has made significant contributions to the field of delta sigma modulation, holding a total of 5 patents. His work focuses on enhancing the efficiency and resolution of analog-to-digital and digital-to-analog converters.

Latest Patents

One of Hoe's latest patents is for a low power delta sigma converter. This invention features a delta sigma modulator that minimizes power dissipation while maintaining high modulator resolution. It incorporates a current mode digital-to-analog converter (DAC) in shunt with a conventional operational amplifier (op amp) in the first stage of the modulator. This design allows the DAC to provide the necessary slewing current during transients, enabling the op amp to operate at low quiescent power.

Another significant patent is for a high-order delta sigma analog-to-digital converter with unit-delay. This modulator design allows each cascaded integrator to settle independently within a full clock period. By utilizing binomial coefficients in the feedback paths, it achieves improved sinusoidal shaping of quantizer error. This innovation increases both the sampling rate and the order, thereby enhancing resolution. The modulator includes multiple cascaded unit-delay integrators and a multi-bit analog-to-digital converter that receives the output signal from these integrators.

Career Highlights

David Henry Hoe has worked with General Electric Company, where he contributed to various innovative projects. His experience in the industry has allowed him to refine his skills and develop groundbreaking technologies in the field of signal processing.

Collaborations

Throughout his career, Hoe has collaborated with notable professionals, including David Byrd Ribner and Juha Mikko Hakkarainen. These collaborations have further enriched his work and contributed to the advancement of technology in his field.

Conclusion

David Henry Hoe is a distinguished inventor whose contributions to delta sigma modulation have significantly impacted the field of signal processing. His innovative patents reflect his commitment to enhancing technology and improving efficiency in electronic devices.