According to Dr. Ron Gilgenbach, an AFOSR-sponsored researcher at the University of Michigan, a new class of magnetrons was invented that holds the potential for more compact Department of Defense microwave sources with faster start-up, as well as higher peak and average power.
"This invention should make it possible to develop more compact magnetrons that operate at higher power and higher frequencies," said Gilgenbach. "Higher power magnetrons could be utilized to jam and defeat enemy electronics."
The magnetron has been vital to military radar systems since World War II. Over time the basic design of the magnetron has not changed much. However, the University of Michigan researchers have revolutionized the design of both conventional and inverted magnetrons by expanding the cathode (negatively charged electrode) and anode (positively charged electrode) area into a new type of magnetron, which permits higher current and a larger area for heat dissipation in a more compact device.
This research has a significant impact on the Air Force's radar capabilities. The newly invented magnetron's higher frequencies have the potential to improve radar resolution. Additionally, the more compact packaging of the new magnetron could encourage airborne applications.
"This invention exploits some plasma physics principles that have been applied to this problem as well as an innovative, new geometry to overcome the physical limitations of conventional magnetrons," said Gilgenbach. "The vision is to explore both a high power version of the magnetron invention and a separate higher frequency (mm wave) embodiment."
AFOSR has been funding the research that led to this invention under the program direction of Dr. Robert Barker, Physics and Electronics program manager. Dr. Barker speaks highly of the University of Michigan-led team, which includes co-inventors: R.M. Gilgenbach (UM), Y.Y. Lau (UM), Brad Hoff (formerly UM, currently at AFRL), David French (UM), and John Luginsland (NumerEx).
"The Michigan group led by Profs. Gilgenbach and Lau has long been a mainstay of AFOSR's high power microwave (HPM) research team," said Barker. "Not only is it internationally recognized for its scientific accomplishments as exemplified by this new invention, but this Michigan group also serves as an example for the rest of the university community. It has established active collaborations with AFRL counterparts and provided a steady stream of graduates to staff the ranks of the Air Force's HPM research and development establishment."ABOUT AFOSR:
Rebecca Rose | EurekAlert!
Failures in power grids: Dynamically induced cascades
25.05.2018 | Technische Universität Dresden
Beyond the limits of conventional electronics: stable organic molecular nanowires
24.05.2018 | Tokyo Institute of Technology
The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.
Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...
A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.
The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...
At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.
At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...
There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
25.05.2018 | Event News
02.05.2018 | Event News
13.04.2018 | Event News
25.05.2018 | Event News
25.05.2018 | Machine Engineering
25.05.2018 | Life Sciences