抄録
In this paper, we try an improvement of the resistive sheet type mm-wave absorber at 94GHz, which consists of spacer (polycarbonate) and resistive sheet (polyethylene terephtalate deposited with Indium Tin Oxide). First, the sheet resistance of the resistive sheet and the permittivity of polycarbonate are estimated by the least-squares method using the absorption which is measured at 85-100GHz frequency band. Second, we describe a design and manufacturing of the wave absorber for 94GHz band using these data. As a result, measured frequency characteristics of the reflection loss indicates that the peak absorption of 34-46dB is attained at 95-96GHz.
