uhf rfid 시스템개요및...
TRANSCRIPT
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UHF RFID 시스템 개요 및안테나 설계
UHF RFID 시스템 개요 및안테나 설계
손해원
전기전자컴퓨터공학부
전북대학교
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UHF RFID 개요UHF RFID UHF RFID 개요개요III
리더 안테나리더리더 안테나안테나IIIIIIIII
태그 안테나태그태그 안테나안테나IIIIII
목차
RFID 응용 서비스RFID RFID 응용응용 서비스서비스IVIVIV
RFID 기술 발전 전망RFID RFID 기술기술 발전발전 전망전망VVV
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I. UHF RFID I. UHF RFID 개요개요
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온도
습도
환경 정보
조도
모바일 RFID 기술
항만 물류용 응용 기술U-센서 싱크노드/
게이트웨이
센서 DB, 데이터 처리및 관리 기술
저전력 멀티홉센서 네트워킹 기술
RFID 적용 환경
RFID 리더/태그
상황인식미들웨어
자동식별미들웨어
센서 노드 기술
센서태그 기술
RFID/USN 기술 개요RFID/USN 기술 개요
RFID/USN Overview
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RFID Overview
Barcode and RFID Tag
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RFID Overview
RFID Frequency and Applications
13.56Mhz(ISO 18000-3)
433.92MHz(ISO 18000-7)
960MHz (ISO 18000-6), EPC
2.45GMhz(ISO 18000-4)
125KHz,134KHz(ISO 18000-2)
860MHz
GlobalPassport, ID card
ID cardName: Rei ItsukiNo.: 00012345Div.: Mu VCCompany: Hitachi, Ltd.
Embedded μ-chip
POST CARD
Invitation forHitachi Exhibition 2002
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5th Step5th Step3rd Step3rd Step 4th Step4th Step2nd Step2nd Step1st Step1st Step
History Management
Product information
Real time stock mgmt.
Real time, automatic control of reaction
to changing environment
Product distribution
history mgmt.
u-Sensor network
Read Read/ Write
SensingSensor network
EnvironmentStructural
Health Monitoring
(ex: Hospital –Remote medication &
prescription depending on the patient condition]
(ex: Home – temp. &
humidity change, Temp. control, etc.]
RFID Systems SensorNetworksRFID/USN
Technology Evolution
ID Recognition
Sensing the Environment
Networking of Distributed Sensors
Intelligent Sensing & Control
RFID/USNApplication
Service Evolution
DMBDTV
CelluerPCS
IMT-2000 WLANWiBro
4G xDSLWire - Line
센서통합RFID Systems
sensor and actuator networks
RFID/USN 기술의 발전 단계
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Architecture of the RFID Reader
UHF RFID Reader
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RFID Readers
UHF RFID Reader
<PC Card Type>
<Handheld Type>
<Fixed Type>
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UHF RFID Tag
Antennas and Chips for UHF Tags
- PENI Tag -
- Hitach Mu chip -
Antennaon a chip
chip
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Architecture of the RFID Tag
Architecture of the Passive Tag
Voltage multiplierBackscattering modulation
Demodulator (PWM)
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Backscattering Modulation
Backscattering Modulation
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II. II. 태그태그 안테나안테나
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UHF RFID Tag
Antennas and Chips for UHF Tags
- PENI Tag -
- Hitach Mu chip -
Antennaon a chip
chip
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Antenna Chip
Assembly/Package
Case Item
Smart Packaging
Food/Drinking Healthcare …
Chip Antenna
Packaging
Battery
UHF RFID Tag
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Low Cost of Tag Technology
UHF RFID Tag
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Small
Small area & low profile
Wideband
International use (860~960MHz)
Tolerant to the variation of a chip impedances and attached materials.
Cheap & efficient
Low-cost, but low-loss material
Low fabrication cost
Easy to adjust the input impedance
No use of matching networks
Orientation insensitive
Quasi-isotropic pattern
Good cross-pol. performance (in case of a circularly polarized reader antenna)
UHF RFID Tag Antennas
Tag Antenna Requirements
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Tag Examples (Symbol)
Read-Only Single Dipole
Read Distance5 ft. 15 ft. 25 ft.
1.2”*1.5”Glass/Plastic Bottle
1”*4”Concrete
1”*6”Glass, Wood
1”*6”Plastic
CardboardBagtag
1”*7.4”Metal
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Read-Only Dual Dipole
Read Distance 15 ft. 25 ft.
4”*4”Cardboard
Plastic
4”*4”General Perpose
(Plastic, Cardboard, Wood)
2.9”*2.9”Plastic,
Wooden Pallet
2.2”*2.2”Plastic,
Wooden Pallet
Tag Examples (Symbol)
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Architecture of the Passive RFID Tag Chip
Ref. U. Karthaus, et.al “Fully Integrated Passive UHF RFID Transponder IC with 16.7uW Minimum RF Input Powe” IEEE journal of solid-state circuits, vol. 38, no. 10, oct. 2003, pp.1602-1608.
Zc = Rc + jXc• Rc = 5 ~ 30Ω• Xc = -100 ~ -300Ω
Tag Antennas
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The tag antenna should provide a simple and easy way to control its impedance freely.
Tag chip : small resistance + large capacitive reactance
Tag ant. : small resistance + large inductive reactance.
The tag chip has high Q impedance, so it is difficult to design a
matched antenna with wideband characteristics.
ca
ca
ZZZZ
+−
=Γ*
Complex Conjugate Impedance Matching
Tag Antennas
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Inductively Coupled Feed
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Tag Examples
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Tag Examples
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Tag Examples
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General dipole tags do not work efficiently on the metallic surface.
Tags on the Metal Surfaces
Detune the impedance matching
Planar patch antennas are suitable for RFID tags on metallic surfaces.
Higher radiation efficiency, but narrow bandwidth
26MHz(902-928MHz) bandwidth is required in North America.
Low radiation efficiency
Tag Antennas on Metal
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Metal Tag Antenna
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Wideband Metal Tag Antenna
< 엑사이엔씨 >
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Low-Cost Metal Tag Antenna
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Embedded Tag Antenna
t = 5mm
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III. III. 리더리더 안테나안테나
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Reader Antenna
리더 안테나 요구 사항– 이득 : 6dBi 이상(∵4W EIRP)
– 편파 : 선형(linear) or 원형(circular)
– 높은 송수신 격리도(isolation)
– Small & Cheap
높은 송수신 격리도
– 리더의 송수신 주파수가 동일하거나 인접함
– 송신 신호의 일부가 수신부에 누설되어 수신 감도를 저하시킴
• Phase noise of the oscillator
• Nonlinearity → LNA 사용 불가
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국내/국제특허 출원
고정형 리더 안테나 구조
“Design of Compact RFID Reader Antenna with High Transmit-Receive Isolation”Microwave Optical Tech. Lett., vol. 48, no. 12, Dec. 2006.
Reader Antenna
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이득송신 포트와 수신포트 사이의 격리도
인식 거리 (4W EIRP, Symbol Tag)
10
6
이득 [dBic]구분
Symbol Inc.
ETRI
3.6305mmⅹ710mmⅹ40mm
3.8200mmⅹ450mmⅹ30mm
인식거리 [m]크기
리더 안테나 성능
Reader Antenna
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IV. RFID IV. RFID 응용응용 서비스서비스
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약
책
비디오
음반
.
.Etc.
Application ServiceProvider
시약정보유통정보
복용법 제공
관련 정보의동영상
정보제공 등
비디오에 대한예고편등 제공
음반의 주요Music Video
제공등
RFID Reader 장착휴대폰
Digital Contents 적용 모델
Mobile RFID Service
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항만물류용 433MHz RFID 기술
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SCP
DCS
RFID Tag 발행
RFID Server
BHS
Baggage정보 Display
RFID#/탑승객정보/수하물정보
ULD
Bag Loading Check
ULDBHS
탑승수속
BRSBGR
conveyer
conveyer
Monitor에 도착 수하물정보 표시
수하물 Miss-Load방지
Gate 통과승객정보
Gate 통과승객정보관리 승객과 수하물 탑재비교
Claim Area
DCS(Departure Control System), BGR(Boarding Gate Reader), BRS(Baggage Reconciliation System)SCP(Security Check Point), ULD(Unit Load Device), BHS(Baggage Handling System)
수하물 찾아 가기
RFID#/탑승객정보/수하물정보
탑승객정보/수하물정보
항공물류용 수동형 RFID 기술
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V. RFID V. RFID 기술기술 발전발전 전망전망
수동형 RFID 태그 반 능동형 센서 태그(Semi-SAL)
능동형 센서 태그(SAL) (ex. Peni Tag) Chipless 센서 태그
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Antenna
&
Matching
network
Battery
Logic
&
Power
Management
Memory
Modulator
&
Demodulator
A/D Converter
& MultiplexerSensors
Integrated or separate sensors & A/D Converter
Chip
안테나
칩 + 센서
전지
RFID inlet(안테나, 칩 등)
전원(얇고 유연한 배터리)
라벨 표면층(보호 및 접착)
Semi-SAL SAL
Antenna
&
Matching
network
Battery
Logic
&
Power
Management
Memory
Duplexer
A/D Converter
& MultiplexerSensors
Integrated or separate
sensors & A/D Converter
SoCController
MOD
DEMOD
PA
LNA
Tx
Rx
PLL
* SAL: Smart Active Label
배터리 전원으로 동작하는 센서가 부착된 얇고 유연한 성질을 지닌 u-센서 태그 기술
반 능동형 센서 태그(Semi-SAL)는 기존의 수동형 RFID 태그에 배터리 및 센서 추가
능동형 센서 태그(SAL)는 반 능동형 센서 태그에 RF 송수신기능 추가로 인식거리 10~30m
반반 능동형능동형 센서센서 태그태그 기술기술
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Polymer IC TagPolymer IC Tag
Polymer IC Tag
Polymer Transistor을 이용하여 아날로그/디지털 회로를 구성한 태그
인쇄 공정을 이용한 회로 제작 (기존의 실리콘 공정을 이용하지 않아서, chipless라고 불림)
1ct Tagfor item-level
(13.56MHz)