| UHF대역 RFID 리더 간섭방지 용 전파흡수체 개발 |
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박수훈, 최창묵, 송영만, 김동일, 정지원, 김기만 |
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| Development of the EM Wave Absorber for Preventing RFID Reader Interference in UHF band |
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Soo-Hoon Park, Chang-Mook Choi, Young-Man Song, Dong-Il Kim, Ji-Won Jung, Ki-Man Kim |
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| Abstract |
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In this paper, the EM wave absorber was designed and fabricated for preventing Reader Interference of RFID communication system in UHF band We fabricated several samples in different composition ratios of Amorphous and CPE(Chlorinated Polyethylene). Absorption abilities were simulated in accordance with different thicknesses of the prepared absorbers and changed complex relative permittivity and permeability due to composition ratio. The mixing ratio of Amorphous and CPE was searched as 80 : 20 wt.% by experiments and simulation Then the EM wave absorber was fabricated and tested using the simulated data As a result, the developed EM wave absorber has a thickness of 4 mm and absorption ability was over 20dB in frequency range of 860 MHz -960 MHz. Therefore,
it was confirmed that the developed absorber can be used for suppressing RFID reader interference in UHF band. |
| Key Words:
reader interference;EM wave absorber;material constant;Amorphous;RFID;UHF |
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