RFSS Lab. Seminar

Won-Seok Lee2011. 04. 28

wslee@kaist.ac.kr

CST를 이용한 UHF RFID tag Antenna 설계

Radio Frequency System Solution Lab.Korea Advanced Institute of Science and Technology

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다양한 형태의 RFID tag

Radio Frequency System Solution Lab.Korea Advanced Institute of Science and Technology

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일반적인 RFID tag의 등가회로 및 Conjugate Matching

Radio Frequency System Solution Lab.Korea Advanced Institute of Science and Technology

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Loop+Dipole 형태의 RFID tag의 등가회로 및 Conjugate Matching

Radio Frequency System Solution Lab.Korea Advanced Institute of Science and Technology

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사용기판 정보

FR-4

두께 1mm

금속두께 35um

Permittivity (Er) 4.6

loss tangent (σ) 0.015

Tag chip 정보

ALIEN HiggsTM-3

Equivalent input parallel resistance 1500 Ohms

Equivalent input parallel capacitance 0.85 pF

Equivalent input impedance 27.41-200.9j

Radio Frequency System Solution Lab.Korea Advanced Institute of Science and Technology

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35mm

70mm

6mm

Loop+Dipole 형태의 RFID tag 예시

Radio Frequency System Solution Lab.Korea Advanced Institute of Science and Technology

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S11 측정

Radio Frequency System Solution Lab.Korea Advanced Institute of Science and Technology

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Smith Chart

Radio Frequency System Solution Lab.Korea Advanced Institute of Science and Technology

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방사패턴 측정