碩士 / 國立高雄海洋科技大學 / 海洋工程科技研究所 / 98 / Some UHF RFID tag antenna designs are proposed to apply for marine vehicle in this thesis. Due to loading effects to make impedance mismatching between antenna and microchip, tag antenna may not properly function when it’s attached on different material. This study first proposes an F-shaped dipole antenna attached on glass. By introducing two parasitic strips inset along the closed loop of the input IC chip to generate coupling capacitance, a new resonant mode close to the first operating mode of the regular F-shaped dipole antenna is excited to enhance the operating bandwidth. The operating frequency range can be 857 ~ 960 MHz to obtain the bandwidth of 103 MHz for UHF band with the maximum reading range of 5 m. Due to glass film with metal material, this will cause interference and degradation for electromagnetic wave. To overcome the above problem, we propose a symmetrical dipole antenna with the shorting pins connected with the ground plane. Two resonant modes can be excited to obtain the operating frequency range of 860 ~ 965 MHz to meet the specifications of UHF RFID system. Details of the proposed UHF RFID tag antenna designs are described, and experimental results for the obtained broadband performance operated at 900 MHz band are presented and discussed.
| Identifer | oai:union.ndltd.org:TW/098NKIM8345002 |
| Date | January 2010 |
| Creators | Jia-Jie Wu, 吳家傑 |
| Contributors | Jui-Han Lu, 陸瑞漢 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 93 |
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