Abstract
With the increasing expectations of electromagnetic devices, the defects of monofunctional devices which are susceptibly limited by external constraints are becoming more and more obvious. In this paper, a novel multifunctional metamaterial tailored by solid state plasma (SSP) is proposed. By inspiring particular SSP resonators, such a device can be handily switched back and forth among three states. When our design is working in State I, its function embodies as an energy absorber and the absorption which is over 90% for TE and TM modes are 5.87–7.30 GHz (the RB is 21.72%) and 5.41–6.34 GHz (the RB is 15.83%). State II and State III keep the same functionality of cross polarization conversion but distinct operating band. The polarization conversion rate (PCR) of State II which is higher than 90% is 7.4–12.2 GHz (the RB is 48.98%). This working range will be shifted to 5.71–8.47 GHz (the RB is 38.92%) after switching to State III. Compared with the conventional tunable devices, this SSP metamaterial has the advantage of functional diversity and it provides a new design idea of absorber and polarization converter to promote potential applications of multifunctional devices.
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