Location History:
- Boulogne, FR (1984)
- Boulogne Billancourt, FR (1983 - 1985)
Company Filing History:
Years Active: 1983-1985
Title: Yan Haentjens: Innovator in Microwave Technology
Introduction
Yan Haentjens is a notable inventor based in Boulogne Billancourt, France. He has made significant contributions to the field of microwave technology, particularly in the development of advanced radar systems. With a total of three patents to his name, Haentjens has demonstrated a commitment to innovation and excellence in his work.
Latest Patents
One of his latest patents is a field effect transistor microwave amplifier. This invention is utilized in a microwave preamplifier of a Doppler radar system designed for Earth observation. The design incorporates three pre-matched and self-biased field effect microwave transistors. By employing a voltage regulator that adjusts the output voltage based on a control circuit, the gain of the pre-amplifier can be varied without altering the standing wave ratio. This allows for modulation of the microwave signal, which can include speech modulation for the transmission signal of the radar system.
Another significant patent is a microwave power transmitter for Doppler radars used in terrestrial surveillance. This invention features a series of four stages, including first and second preamplifiers and first and second power amplifiers. Each stage is powered by a separate voltage regulator, which is controlled by a circuit that can cut off the stabilized voltage between transmission pulses. A feedback device stabilizes the output level by adjusting the gain of the first preamplifier through its supply voltage.
Career Highlights
Yan Haentjens is currently employed at LMT Radioprofessionnelle, where he continues to push the boundaries of microwave technology. His work has been instrumental in enhancing the capabilities of radar systems, making them more efficient and effective for various applications.
Collaborations
Haentjens collaborates with Maurice Marchand, a talented woman in the field. Their partnership exemplifies the importance of teamwork in driving innovation and achieving technological advancements.
Conclusion
In summary, Yan Haentjens is a distinguished inventor whose work in microwave technology has led to significant advancements in radar systems. His innovative patents reflect his expertise and dedication to improving technology for Earth observation and surveillance applications.