Company Filing History:
2 out of 50 
1 out of 832,912 Years Active: 1987-1988
Title: The Innovations of Ian Crossley
Introduction
Ian Crossley is an accomplished inventor based in Andover, MA (US). He holds three patents that showcase his expertise in the field of electrical engineering and oscillator technology. His innovative contributions have made a significant impact in various applications.
Latest Patents
One of Ian Crossley's latest patents is a voltage-controlled oscillator that includes a VCO chip, which is a monolithic circuit featuring a Gunn diode and a varactor diode interconnected by a resonant circuit. This invention also includes a detector/discriminator/power divider chip that is coupled to the VCO chip through a directional coupler. This chip is a monolithic circuit that contains a pair of discriminator diodes and an amplitude detector diode on a semi-insulating substrate, along with associated circuit components. The connected electrodes of the discriminator diodes are linked to one output of the power divider, while an electrode of the amplitude detector diode is connected to the other output. Stagger-tuned resonant circuits are coupled to the other electrodes of the discriminator diodes. Conducting portions that form low pass filters couple the amplitude detector diode and the discriminator detector diodes to their respective outputs. The outputs of both the discriminator and amplitude detector are connected to the inputs of an analog divider, which provides a ratio signal to the negative input of a differential amplifier. The positive input of the differential amplifier receives a frequency designating potential, and the output is coupled to the varactor diode.
Career Highlights
Throughout his career, Ian has worked with notable companies, including Alpha Industries. His experience in these organizations has contributed to his development as an inventor and has allowed him to refine his skills in creating innovative technologies.
Collaborations
Ian has collaborated with talented individuals such as Daniel Donoghue and John Miley. These partnerships have fostered a creative environment that has led to the development of groundbreaking inventions.
Conclusion
Ian Crossley is a distinguished inventor whose work in voltage-controlled oscillators has advanced the field of electrical engineering. His patents reflect his innovative spirit and dedication to technology.