This paper reports the design procedure and critical discussion about the relation between the input impedance and bandwidth for obtaining the wide-band, thin film scatter type microwave absorber in the x-band range. A design method of double-layered absorber was provided by means of transmission line theory. The authours have developed a scatter type method using thin dipole AL metal which are put loss dielectric based on a metal. From the experimental results, it is concluded that the amounts of reflection agree well with results from theoretical calculation.
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