论文信息 - Optimisation of a stepped permittivity impedance loaded (SPIL) absorber

Optimisation of a stepped permittivity impedance loaded (SPIL) absorber

A novel type of pyramidal absorber is presented. This absorber utilises a combination of impedance loading and an exponential stepped permittivity profile. The new design offers a significant improvement in the absorber's low frequency performance when compared with existing pyramidal absorbers. Optimisation of the design's parameters, using a PSO algorithm, has been carried out to maximise the absorber's bandwidth at −40dB reflectivity.

Kenneth L. Ford | Daniel G. Holtby | Barry Chamber

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