John M Hadden, Iv

Title: Innovations of John M Hadden, Iv

Introduction

John M Hadden, Iv is a notable inventor based in Redondo Beach, CA. He has made significant contributions to the field of antenna technology, holding a total of 3 patents. His work primarily focuses on enhancing the performance and efficiency of antenna systems.

Latest Patents

One of his latest patents is for a "Low profile cavity backed long slot array antenna with integrated circulators." This invention relates to active electronically scanned array antennas. It features a thin, low-cost design achieved by coupling electromagnetic energy into periodically driven long slots using circulators with integrated probes. The long slots are formed as grooves in a conductive base plate, with each groove bracketed on both sides by conductive strips. The circulators with integrated probes are installed between the conductive strips and the base plate, which reduces fabrication costs and facilitates connections between the circulators and the antenna electronics. The probes protrude partway into the slots, providing coupling to waves propagating in free space.

Another significant patent is the "Surface/traveling wave suppressor for antenna arrays of notch radiators." This antenna system includes an array of notch radiators arranged in aligned rows on longitudinal axes, defining a series of troughs between adjacent notch radiator rows within an aperture area. Each notch radiator includes a tip region. A plurality of surface/traveling wave suppressors, fabricated from microwave energy absorbing material, is disposed in the troughs. The longest suppressor dimension is transverse or nearly transverse to the array face, ensuring effective suppression of unwanted waves.

Career Highlights

John M Hadden, Iv has built a successful career at Raytheon Company, where he has been instrumental in developing advanced antenna technologies. His innovative designs have contributed to the company's reputation as a leader in defense and aerospace technologies.

Collaborations

Throughout his career, Hadden has collaborated with several talented individuals, including Robert G Yaccarino and Lonny Richard Walker. These collaborations have fostered a creative environment that has led to groundbreaking advancements in antenna technology.

Conclusion

John M Hadden, Iv is a distinguished inventor whose work in antenna technology has resulted in multiple patents and significant advancements in the field. His contributions continue to influence the development of efficient and effective antenna systems.