KR200451264Y1 - Increasing technique of communication range RFID system by non-crystalline metal powder EM wave absorber non-crystalline metal powder - Google Patents

Increasing technique of communication range RFID system by non-crystalline metal powder EM wave absorber non-crystalline metal powder Download PDF

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KR200451264Y1
KR200451264Y1 KR2020080014873U KR20080014873U KR200451264Y1 KR 200451264 Y1 KR200451264 Y1 KR 200451264Y1 KR 2020080014873 U KR2020080014873 U KR 2020080014873U KR 20080014873 U KR20080014873 U KR 20080014873U KR 200451264 Y1 KR200451264 Y1 KR 200451264Y1
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metal powder
rfid system
crystalline metal
wave absorber
mhz
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KR20100005061U (en
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김동일
박수훈
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한국해양대학교 산학협력단
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G06K19/07771—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card the record carrier comprising means for minimising adverse effects on the data communication capability of the record carrier, e.g. minimising Eddy currents induced in a proximate metal or otherwise electromagnetically interfering object

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  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
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  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
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Abstract

본 고안은 새로운 전파흡수재료로 비정질금속 분말인 평판상의 Amorphous metal powder(주성분 : Fe 73.5 at.%, Cu 1 at.%, Nb 3 at.%, Si 13.5 at.%, B 9 at.%)와 지지재인 CPE를 혼합하여 UHF 대역(433 MHz, 860 MHz ~ 960 MHz) RFID 시스템용 전파흡수체를 개발하여 금속판으로 인하여 최대통신거리가 감소되는 RFID 시스템에 적용함으로써 최대통신거리를 증대시키는 기술에 관한 것이다. The present invention is a novel radio wave absorbing material, which is amorphous metal powder in the form of amorphous metal powder (Primary component: Fe 73.5 at.%, Cu 1 at.%, Nb 3 at.%, Si 13.5 at.%, B 9 at.%) Developed a radio wave absorber for the UHF band (433 MHz, 860 MHz to 960 MHz) RFID system by mixing the CPE as a support material and applying it to the RFID system where the maximum communication distance is reduced by the metal plate. will be.

RFID, 비정질금속 분말(Amorphous metal powder), 전파흡수체, UHF 대역 RFID, amorphous metal powder, radio absorber, UHF band

Description

비정질금속 분말을 이용한 전파흡수체에 의한 무선인식 시스템의 통신거리 증대 기술 {Increasing technique of communication range RFID system by non-crystalline metal powder EM wave absorber non-crystalline metal powder} Increasing technique of communication range RFID system by non-crystalline metal powder EM wave absorber non-crystalline metal powder

일반적으로 RFID 시스템용 전파흡수체는 13.56 MHz 대역의 주파수를 사용하는 RFID 시스템의 자계 노이즈를 제거하는 목적으로 사용되어 왔으며, 주로 Carbon, Ferrite, Sendust 계열의 손실재료를 사용하였다. In general, the electromagnetic wave absorber for the RFID system has been used to remove the magnetic field noise of the RFID system using the frequency of 13.56 MHz band, mainly used carbon, Ferrite, Sendust series loss materials.

기존의 재료를 이용하여 마이크로파를 사용하는 UHF 대역(433 MHz, 860 ~ 900 MHz) RFID 시스템용 전파흡수체를 제작하는 경우, 20 dB 이상의 전파흡수능을 보이기 어렵고 두께가 두꺼워 무게가 무거워지고, 생산 가격이 비싸다는 단점이 있다. In case of fabricating the radio wave absorber for the UHF band (433 MHz, 860 ~ 900 MHz) RFID system using microwave using the existing materials, it is difficult to show the radio wave absorption capacity of 20 dB or more, and the thickness is heavy, and the production price is high. It is expensive.

본 발명은 새로운 손실재료인 비정질금속 분말인 원형의 Amorphous powder(주성분 : Fe 73.5 at.%, Cu 1 at.%, Nb 3 at.%, Si 13.5 at.%, B 9 at.%)를 Attrition Miller를 통하여 24시간 가공 후에 지지재인 CPE(Chlorinated Polyethylene)와 혼합하여 UHF 대역(433 MHz, 860 ~ 900 MHz)에서 20 dB 이상의 우수한 전파흡수능을 가지도록 전파흡수체를 제작하여 RFID 시스템에 적용함으로써 통신거리를 대폭 증대시키는 것이다. Attrition of the original Amorphous powder (main component: Fe 73.5 at.%, Cu 1 at.%, Nb 3 at.%, Si 13.5 at.%, B 9 at.%) Is a new lossy material. After processing for 24 hours through Miller, it is mixed with CPE (Chlorinated Polyethylene), which is a support material, to make a radio wave absorber to have an excellent radio wave absorbing capacity of 20 dB or more in UHF band (433 MHz, 860 ~ 900 MHz) and applied to RFID system. To greatly increase.

비정질금속 분말인 원형의 Amorphous metal powder(주성분 : Fe 73.5 at.%, Cu 1 at.%, Nb 3 at.%, Si 13.5 at.%, B 9 at.%)를 Attrition Miller를 통하여 24시간 가공하여 복소비투자율 및 복소비유전율을 제어하고 배합율을 조정함으로써 우수한 특성을 도출한다. 그리고 실제 금속에 의해 통신거리가 감소된 RFID 시스템에 고안된 전파흡수체를 적용하여 통신거리 증가를 확인하는 발명으로 이루어진다. Circular amorphous metal powder (main component: Fe 73.5 at.%, Cu 1 at.%, Nb 3 at.%, Si 13.5 at.%, B 9 at.%) Is processed through Attrition Miller for 24 hours By controlling the complex permeability and the complex dielectric constant and adjusting the blending ratio, excellent characteristics are derived. And it is made of the invention to confirm the increase in the communication distance by applying the radio absorber designed in the RFID system is reduced the communication distance by the actual metal.

본 발명에 의하여 이루어지는 기술은 원형의 비정질금속 분말(Amorphous metal powder)을 평판상으로 가공하여 저주파대역에서 높은 복소비유전율과 복소비투자율을 갖게 함으로써 UHF 대역(433 MHz, 860 ~ 900 MHz)에서 전파흡수능을 크게 향상시킴과 동시에 전파흡수체를 더욱 박형화 함으로써 전파흡수체 산업과 RFID 산업 전반에 큰 영향을 끼칠 것이다. The technique made by the present invention processes a circular amorphous metal powder into a flat plate to give a high complex dielectric constant and complex permeability in the low frequency band, thereby propagating in the UHF band (433 MHz, 860 to 900 MHz). It will greatly improve the absorption capacity and at the same time make the radio absorber even thinner will have a big impact on the radio absorber industry and the RFID industry as a whole.

(실시예 1)        (Example 1)

도 1은 비정질금속 분말(Amorphous metal powder)을 이용한 RFID용 전파흡수체(Amorphous powder : CPE = 85 : 15 wt.%)의 복소비유전율과 복소비투자율을 각각 나타낸 것이다. Figure 1 shows the complex dielectric constant and complex permeability of the radio wave absorber (Amorphous powder: CPE = 85: 15 wt.%) For RFID using amorphous metal powder (Amorphous metal powder), respectively.

UHF 대역(433 MHz, 860 ~ 900 MHz)에서 각각 두께가 5.8 mm, 3.15 mm 인 RFID용 전파흡수체(Amorphous metal powder : CPE = 85 : 15 wt.%)의 전파흡수 특성을 도 2에 나타낸다. Figure 2 shows the radio wave absorption characteristics of the RFID absorber (Amorphous metal powder: CPE = 85: 15 wt.%) Having a thickness of 5.8 mm and 3.15 mm in the UHF band (433 MHz, 860 ~ 900 MHz), respectively.

(실시예 2)(Example 2)

고안된 전파흡수체의 성능을 확인하기 위하여 금속에 의해 최대 통신거리가 감소된 실제 RFID 시스템의 통신거리 측정시스템을 도 3에 나타낸다. 3 shows a communication distance measuring system of an actual RFID system in which the maximum communication distance is reduced by metal to confirm the performance of the designed radio absorber.

도 4는 금속판으로 인하여 통신거리가 감소된 실제 RFID 시스템의 최대 통신거리 측정 시스템에 고안된 전파흡수체(Absorber C)를 적용하여 통신거리가 증가함을 나타낸 그래프이다. Figure 4 is a graph showing that the communication distance increases by applying the absorber (Absorber C) designed in the maximum communication distance measuring system of the actual RFID system is reduced communication distance due to the metal plate.

도 1은 비정질금속 분말을 이용한 RFID용 전파흡수체의 재료정수 곡선1 is a material constant curve of the radio wave absorber for RFID using amorphous metal powder

도 2는 비정질금속 분말을 이용한 RFID용 전파흡수체의 전파흡수 특성Figure 2 is a radio wave absorption characteristics of the radio wave absorber for RFID using amorphous metal powder

도 3은 RFID 시스템의 통신거리 측정 시스템3 is a communication distance measuring system of the RFID system

도 4는 전파흡수체 적용 시 RFID 시스템의 통신거리 측정 결과4 is a communication distance measurement result of the RFID system when applying the radio absorber

Claims (2)

RFID 시스템에 있어서 Tag를 부착하는 금속판과 Tag사이에 고성능 전파흡수체를 삽입하여 RFID시스템의 통신거리를 대폭 증대시키는 것을 목적으로, 주성분이 Fe 73.5 at.%, Cu 1 at.%, Nb 3 at.%, Si 13.5 at.%, B 9 at.%인 비정질금속분말(Amorphous metal powder : AMP)을 Attrition Miller로 가공하여 CPE와 같은 바인더(B)와 AMP : B = (75 ~ 90 wt.%) : (25 ~ 10 wt.%)의 비로 배합하여 판상(sheet)으로 제작하는 것을 특징으로 하는 전파흡수체In the RFID system, the main components are Fe 73.5 at.%, Cu 1 at.%, And Nb 3 at. In order to significantly increase the communication distance of the RFID system by inserting a high-performance radio wave absorber between the tag and the metal plate. Amorphous metal powder (AMP) with%, Si 13.5 at.% And B 9 at.% Was processed with Attrition Miller to obtain binder (B) like CPE and AMP: B = (75 ~ 90 wt.%) : Radio wave absorber, characterized in that it is produced in a sheet (mixture) in a ratio of (25 ~ 10 wt.%) 삭제delete
KR2020080014873U 2008-11-07 2008-11-07 Increasing technique of communication range RFID system by non-crystalline metal powder EM wave absorber non-crystalline metal powder KR200451264Y1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000113142A (en) 1998-10-02 2000-04-21 Sony Corp Information storage device
JP2004038702A (en) 2002-07-05 2004-02-05 Hitachi Cable Ltd Non-contact electronic tag
KR100523313B1 (en) 2005-04-26 2005-10-24 (주) 아모센스 Absorber for radio-frequency identificating antenna and radio-frequency identificating antenna using the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000113142A (en) 1998-10-02 2000-04-21 Sony Corp Information storage device
JP2004038702A (en) 2002-07-05 2004-02-05 Hitachi Cable Ltd Non-contact electronic tag
KR100523313B1 (en) 2005-04-26 2005-10-24 (주) 아모센스 Absorber for radio-frequency identificating antenna and radio-frequency identificating antenna using the same

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