Christopher W Angell

Title: Christopher W Angell: Innovator in Frequency Conversion Technology

Introduction

Christopher W Angell is a notable inventor based in Cary, NC (US), recognized for his contributions to frequency conversion technology. He holds a total of 5 patents, showcasing his innovative spirit and technical expertise in the field.

Latest Patents

One of Angell's latest patents is titled "Analog tracking circuit to improve dynamic and static image rejection of a frequency converter." This invention provides systems, devices, and methods related to frequency converter arrangements. The frequency converter arrangement converts a first signal centered at a first frequency to a second signal centered at a different frequency. It includes local oscillator (LO) circuitry and in-phase, quadrature-phase (IQ) mixer circuitry. The LO circuitry features duty cycle correction circuitry to adjust the duty cycle of input clock signals, along with coarse tuning circuitry responsive to a digital calibration code and analog tuning loop circuitry. Additionally, the LO circuitry incorporates quadrature divider circuitry that generates in-phase and quadrature-phase LO signals.

Another significant patent by Angell is for "Apparatus and methods for phase synchronization of phase-locked loops." This invention provides methods for synchronizing the phase of phase-locked loops (PLLs) in RF communication systems. The phase synchronization circuit includes a sampling circuit that generates samples based on the timing of a reference clock signal. It also features a phase difference calculation circuit and a phase adjustment control circuit that synchronizes the PLL based on the phase difference signal.

Career Highlights

Throughout his career, Christopher W Angell has worked with prominent companies such as Analog Devices, Inc. and Analog Devices Global. His experience in these organizations has contributed to his development as an inventor and innovator in the field of electronics.

Collaborations

Angell has collaborated with notable colleagues, including David J McLaurin and Christopher Mayer, further enhancing his work and contributions to the industry.

Conclusion

Christopher W Angell is a distinguished inventor whose work in frequency conversion technology has led to significant advancements in the field. His patents reflect his innovative approach and dedication to improving electronic systems.