Effect of an Electromagnetic Wave Absorber on 300-GHz Short-Range Wireless Communications

In this paper, a 300-GHz short-range wireless data transmission is demonstrated, with considering antenna-performance variation due to surrounding conditions. For that, a λ/4-type absorber with a resistive film is employed to decrease the antenna-performance variation in the short-range wireless link. By adopting it, bit error rate of the demodulated signal (quadrature phase shift keying, 6 Gb/s) is improved from 5.3 ⨯ 10−6to 2.8 ⨯ 10−6at the carrier frequency of 272 GHz (distance: 1 cm).