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    Please use this identifier to cite or link to this item: http://ccur.lib.ccu.edu.tw/handle/A095B0000Q/433

    Title: 液態金屬調控之可重置標籤電路設計;Design of Reconfigurable Transponder Circuit Based on Liquid Metal
    Authors: 廖建柏;LIAO, JIAN-BO
    Contributors: 電機工程研究所
    Keywords: 重置性;液態金屬;標籤;transponder;reconfigurable;liquid metal;chipless RFID tag
    Date: 2017
    Issue Date: 2019-07-17
    Publisher: 電機工程研究所
    Abstract: 本論文以液態金屬與軟性基板製作可重置電路,並討論通道製作與液態金屬的致動原理。PDMS軟性基板擁有形變的能力,且惰性與許多物質皆不會起反應,可耐熱耐酸鹼,是非常適合做為流道的材質。搭配液態金屬可形變與致動得特性,兩者相得益彰。此外由於液態金屬致動時能產生大幅度的物理形變,有利於突破半導體元件在高頻可調範圍下降導致重置性因此限縮的問題,使其重置性具有更大的調控空間。本論文以上述技術實現具振幅及相位調變之反射標籤,藉著通道的外形與致動方式的配合改變液態金屬形狀,使電路整體物理表面積改變,達到所需的效果,進而克服傳統以負載電路切換進行調變的限制。本論文另一主題為chipless RFID tag,以液態金屬可重置的特性,使被動電路具有調整狀態的優勢,能降低許多電路設計的成本與複雜度。本次設計利用多重諧振器實現chipless RFID tag,且具有3 bit的編碼能力,在量測時標籤與收發端距離可達60 cm。
    This thesis focuses on the designs of microwave reconfigurable circuits using liquid metal and the flexible substrate. PDMS is adopted as flexible substrate due to numerous advantages, including high flexbility and low chemical reaction. On the other hand, the liquid metal can be physically deformed by applying proper actuation. The deformation can be dramatic, providing great reconfigurability comparing to other solid-state tuning devices.The first topic is to design a transponder. The liquid metal can physically change the shape and area of metal surface, resulting in amplitude and phase modulation. This proposed approach can increase RCS ratio coparing to the conventional switching-load technique.The second topic is chipless RFID tag. With liquid metal reconfigurability, the passive circuit has the advantage of adjusting the state, can reduce the cost and circuit design complexity. This design uses multiresonator to achieve chipless RFID tag, and has a 3 bit coding capability. In the measurement, the tag can be away from the transceiver up to 60 cm.
    Appears in Collections:[電機工程研究所] 學位論文

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