Company Filing History:
Years Active: 1995-2003
Title: Rosamaria Croughwell: Innovator in Frequency Detection and RF Amplification
Introduction
Rosamaria Croughwell is a distinguished inventor based in Methuen, MA (US). She has made significant contributions to the field of electronics, particularly in frequency detection and RF amplification. With a total of 3 patents to her name, Croughwell continues to push the boundaries of innovation in her industry.
Latest Patents
One of her latest patents is a frequency detection system designed to produce clock pulses that match the frequency of a stream of binary data. This system utilizes a voltage-controlled oscillator to generate clock pulses, which vary according to a control signal. Each clock pulse is divided into four sequential phases, with boundaries separating adjacent phases. The frequency detector processes the edges of the binary data stream and the clock pulses to create a control signal based on the frequency difference. A lock-out circuit ensures that the control signal is not produced until a new data edge crosses a different boundary.
Another notable patent is her invention of a variable gain amplifier that features at least two branches connected in parallel to drive a common output load. Each branch consists of two FETs arranged in a cascode configuration. The first FET amplifies the input signal in a common source configuration, while the second FET operates in a common gate configuration. This design allows for low distortion throughout the dynamic range of the gain control, enhancing the performance of RF driver amplifiers.
Career Highlights
Croughwell is currently employed at Analog Devices, Inc., where she applies her expertise in electronics to develop innovative solutions. Her work has garnered attention for its practical applications and technical advancements in the field.
Collaborations
Throughout her career, Croughwell has collaborated with notable colleagues, including Marc E Goldfarb and Peter John Katzin. These partnerships have contributed to her success and the development of her patented technologies.
Conclusion
Rosamaria Croughwell is a pioneering inventor whose work in frequency detection and RF amplification has made a significant impact in the electronics industry. Her innovative patents and collaborations highlight her commitment to advancing technology and improving electronic systems.