Thin wide-band radio absorbing coatings

The difficulty of creation of a broadband thin absorptive coating consists in the simultaneous fulfillment of two conditions in a broad frequency band: minor reflection of a wave dropping from free space on the leading edge of the coating; and strong wave absorption inside the coating layer. The problems of synthesis of thin coatings are analysed mathematically. The results indicate that the physically solid distributions of inductivity in the depth of the coating ensure low values of reflection coefficient in a broad frequency band.