Design and fabrication of inkjet printed ultrathin FSS based microwave absorbers

Gabriel Goncalves Machado, Robert Cahill, Vincent Fusco, Gareth Conway

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This work reports the design and fabrication process used to create a new class of ultrathin inkjet printed microwave absorbers. The arrangement is composed of a lossy Frequency Selective Surface (FSS) placed above a ground plane to form a resistive High Impedance Surface (HIS). The thickness of the three absorbers investigated range from λ/58 to λ/223. These extremely thin structures present design and manufacturing challenges to achieve the desired energy absorption (> 90%) over a useable (−10 dB) bandwidth. Numerical optimisation of the surface resistance and topology of the FSS pattern gives values of 7% (λ/58) and 1.5% (λ/223) for absorbers working at normal incidence. The digital settings used in a desktop inkjet printer to obtain the required surface resistance value of the metallised FSS patterns are obtained by curve fitting numerical simulations to experimentally obtained transmission coefficients.
Original languageEnglish
Number of pages6
Publication statusAccepted - 14 Aug 2018
EventThe Loughborough Antennas & Propagation Conference 2018 - Burleigh Court Hotel, Loughborough, United Kingdom
Duration: 12 Nov 201813 Nov 2018
Conference number: 2018


ConferenceThe Loughborough Antennas & Propagation Conference 2018
Abbreviated titleLAPC
Country/TerritoryUnited Kingdom
Internet address


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