Electromagnetic energy focusing technology with GPR array transmitting antenna for high resolution detection

Metamaterial Absorbers with Archimedean Tiling Structures: Toward Response and Absorption of Multiband Electromagnetic Waves

“…Due to the high-speed development of modern electromagnetic wave application technology such as microwave communication, electromagnetic radiation and interference existing in the environment have gradually become non-negligible problems. − Electromagnetic radiation will not only cause thermal and nonthermal damage to the human body, − but the information transmitted by electromagnetic waves can also be easily captured and cause the exposure of people or weapons and equipment, which will greatly reduce the combat effectiveness of the military and seriously threaten national defense security. , Therefore, in order to cope with the threat of the increasingly mature detection technology with “omni-directional, large depth, all-weather, multilevel” and other significant features, , in-depth research and development of multifrequency band response of electromagnetic wave-absorbing materials and how to make the electromagnetic absorber have good absorption performance in multiple frequency bands, improve the broadband absorption efficiency, and realize the application requirements of “light mass, thin thickness, broadband, and strong absorption” has become a hot issue for the design of absorbers nowadays. − At present, for the above problems such as multiband response, if we solely rely on the characteristics of the raw material itself, it will have certain limitations and impacts on the wave-absorbing performance. − Therefore, the design and development of wave absorbers based on the design concept of metamaterials is a more effective solution. − …”