Broadening Design and Preparation of MDF Absorber for Electromagnetic Pollution Control in S-Band

Abstract

This paper reported a new type MDF absorber of high absorption and Broadband was successfully prepared, according to the Electromagnetic Wave Absorbing Theory, by means of the theoretical design and simulation analysis by using MDF as the dielectric material and And with the resistance film composite. Results shown that the resistance of resistive film was 195Ω/□, the monolayer combined sample with thickness as 1.4cm in 2~4 GHz frequency bands, the range of absorbing over -20dB could achieve 50%, and all absorption could exceed -15dB in the whole S-band, the maximum absorption peak was -25dB, moreover, the absorption bandwidth of MDF was more than λ/4 Type EWM-absorber. The new materials could be used to improve residential electromagnetic environment and control pollution.

Are global influences of cascade dams affecting river water temperature and fish ecology?

“…The behavior of contaminants varies depending on how they are mixed with water. Natural self-purification processes destroy nonconservative materials, such as organics, certain inorganic, and countless microbes, resulting in a reduction in their concentration (Hao and Wang 2009). Metals may poison people and wildlife through hazardous industrial, municipality, and urban runoff.…”