| 摘要 |
PROBLEM TO BE SOLVED: To provide a multilayer electric wave absorber which is ready for high frequency waves in an electromagnetic environment where TE waves, TEM waves and TM waves in 2.45 GHz band and 5.2 GHz band, circular polarized waves in 5.8 GHz band are used together and whose return loss is≥18 dB. SOLUTION: The multilayer electric wave absorber is formed of several wave absorbing layers exhibiting different electric wave absorbing characteristics. It is composed of a first electric wave absorbing layer 20 which has the peak of its return loss at 2.8-3.8 GHz as the sole electric wave absorbing characteristics and a second electric wave absorbing layer 10 which has the peak of its return loss at 5-6 GHz as the sole electric wave absorbing characteristics. It exhibits double-humped characteristics, namely has peaks of its return loss at 2.2-2.8 GHz and at 4.8-5.5 GHz. COPYRIGHT: (C)2004,JPO&NCIPI
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