Loop antenna design and application in near-field communication (NFC) system
碩士 === 國立交通大學 === 電機學院電信學程 === 103 === The main focus of this thesis is on the design of near-field loop antenna under the protocol ISO14443. In order to facilitate the antenna design, theoretical investigations and electromagnetic simulation verifications are given in this study to aid the design....
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| Format: | Others |
| Language: | zh-TW |
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2015
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| Online Access: | http://ndltd.ncl.edu.tw/handle/81784136701453664910 |
| Summary: | 碩士 === 國立交通大學 === 電機學院電信學程 === 103 === The main focus of this thesis is on the design of near-field loop antenna under the protocol ISO14443. In order to facilitate the antenna design, theoretical investigations and electromagnetic simulation verifications are given in this study to aid the design.
The theory of microstrip transmission lines is used to aid the design of loop inductors in the antenna structure. How does the physical dimensions (suspended height, line width, line spacings and the number of turns) affects the corresponding inductance and quality factor can then be analyzed. Further use suspended structure and adjust the width of the line reduces the effect of the eddy current and improve the quality factor. Moreover, the thesis gives a discussion on the commonly-met eddy current and stray parasitic capacitance effect and provide feasible solutions to compensate them.
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