Electromagnetic wave absorber using dielectric (Ti) /spl middot/ magnetic(Fe) composite material for GHz frequency band

摘要

It was shown that the matching frequency shift change by the mixing ratio of Fe/Ti can set the matching frequency of wave absorber from 7.7 to 9.4GHz arbitrarily maintaining the maximum reflection loss below 40dB. Moreover, it is able to cover a frequency band of 2.9GHz in a bandwidth of -20dB from 7.3 to 10.2GHz using the same material. The performance of the wave absorber can be analyzed precisely by using calculation. In addition, if you can individually design the values of /spl epsiv/ r * and /spl mu/ r *, it is shown to be able to design the wave absorber with an arbitrary matching frequency by selecting the material of the the wave absorber.