Marco Zanuso

Title: Marco Zanuso: Innovator in Frequency Doubling and Phase-Locked Loops

Introduction

Marco Zanuso is a prominent inventor based in Encinitas, California, with a remarkable portfolio of 11 patents. His work primarily focuses on advancements in electronic systems, particularly in frequency doubling and phase-locked loops.

Latest Patents

One of his latest patents is a frequency doubler with duty cycle correction. This apparatus can implement a frequency doubler in conjunction with a phase-locked loop (PLL) to decrease phase noise. The design includes a signal combiner, a first signal pathway, and a second signal pathway, along with a doubler input node and a doubler output node. The first signal pathway features a first adjustable delay cell, while the second signal pathway includes a second adjustable delay cell.

Another significant patent is the phase interpolation-based fractional-N sampling phase-locked loop. This PLL includes a phase-frequency detector (PFD), a phase interpolation (PI)-based sampler, a loop filter, a voltage-controlled oscillator (VCO), and a fractional frequency divider. The PFD output corresponds to a phase error between a reference clock signal and a feedback signal. The PI-based sampler produces a slope signal in response to the PFD output and adjusts it based on a quantization error correction indication.

Career Highlights

Marco Zanuso is currently employed at Qualcomm Incorporated, a leading company in telecommunications and semiconductor technology. His contributions to the field have been instrumental in enhancing the performance and efficiency of electronic devices.

Collaborations

Throughout his career, Marco has collaborated with notable colleagues, including Yue Chao and Rajagopalan Rangarajan. These partnerships have fostered innovation and have led to significant advancements in their respective fields.

Conclusion

Marco Zanuso's innovative work in frequency doubling and phase-locked loops has made a substantial impact on electronic systems. His patents reflect a commitment to advancing technology and improving device performance.