Radio Absorber Based on an Artificial Magnetic Conductor and Resistive Film

Analytical expressions are presented for the frequency-angular dependences of the reflection coefficient from a radio absorber (RP) based on a resistive film with a resistance of 120π Ω and an artificial magnetic conductor (AMC) as part of a pair of capacitive gratings and an electrically conductive screen. It is shown that the ratio of the width of the absorption band of the RA to its thickness is . Numerical calculations were used to find the distances between the resistive film and a pair of gratings at which the reflection coefficient at the resonance frequency is minimal.