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- W3204272384 abstract "In general, a partially reflective surface (PRS) is mainly used to increase the gain of an antenna; some metallic objects placed on the PRS degrades the antenna performance because the objects change the periodic structure of the PRS. Herein, we propose a multifunctional PRS for smart block application. When a passenger passes over a smart block, the fare can be simultaneously collected and presented through the LED display. This requires high gain antenna with LED structure. The high gain characteristic helps the antenna identify passengers only when they pass over the block. The multifunctional PRS has a structure in which an LED can be placed in the horizontal direction while increasing the antenna gain. We used the antenna's polarization characteristics to prevent performance deterioration when LED lines are placed in the PRS. We built the proposed antenna and measured its performance: At 2.41 GHz, the efficiency was 81.4%, and the antenna gain was 18.3 dBi. Furthermore, the half-power beamwidth was 18°, confirming a directional radiation pattern." @default.
- W3204272384 created "2021-10-11" @default.
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- W3204272384 date "2021-09-29" @default.
- W3204272384 modified "2023-10-03" @default.
- W3204272384 title "Multifunctional Partially Reflective Surface for Smart Blocks" @default.
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- W3204272384 doi "https://doi.org/10.3390/s21196508" @default.
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