CST – Computer Simulation Technology

Single and dual band 77/95/110GHz metamaterial absorbers on flexible polyimide substrate
Pramod K. Singh, Konstantin A. Korolev, Mohammed N. Afsar, Sameer Sonkusale
Applied Physics Letters
29 August 2011
Ultra thin millimeter-wave absorbers on flexible polyimide substrate utilizing metamaterials are implemented for single and dual frequency bands in an emerging frequency spectrum of 77, 95, and 110 GHz. The dual band absorber is designed using a novel approach of imbedding high frequency resonator inside low frequency resonator capable of absorbing electromagnetic energy at both 77 and 110 GHz bands simultaneously. The total thickness of the absorber is just 126 lm (almost 1/20th of the wavelength). Measured peak absorptions for single frequency absorbers are 92, 94, and 99% at 77.2, 94.8, and 109.5 GHz, respectively, and for dual band absorber 92% at 77 GHz and 94% at 109.8 GHz.

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