We introduce a new concept of three states polarization converting metasurface (TS-PCM) based on p-i-n diodes. The proposed structure can offer three distinct wave manipulation functionalities: linear polarization to orthogonal linear polarization (LP-OLP), linear polarization to circular polarization (LP-CP), and linear polarization to full reflection (LP-FR) state. Unlike previous structures, the multiple conversion features are simultaneously achieved in different frequency ranges, depending on the operating state of diode (OFF or ON). In the OFF state of diodes, the LP incident electromagnetic wave is converted into a CP wave in the range 5.20-6.10 GHz, whereas full reflection is obtained at 2-3.66 GHz and 8.42-9.52 GHz band. In the ON state, the TS-PCM converts the LP incident waves into OLP waves in the range 3.77-6.20 GHz and LP waves into CP ones at 7.75-8.60 GHz. Finally, a sample prototype was fabricated and the experimental results were verified with the simulated ones.
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