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    Please use this identifier to cite or link to this item: http://ccur.lib.ccu.edu.tw/handle/A095B0000Q/362

    Title: 諧波雷達傳感器-蜜蜂搜尋系統的差動微型傳感器及具身分識別之數位差動曼徹斯特碼解碼器的研究;Harmonic Radar Transponder - Research of Differential Miniature Transponder Applied to Bee Searching System and Digital Differential Manchester Decoder for Identification Recognition
    Authors: 劉昱廷;LIU, YU-TING
    Contributors: 電機工程研究所
    Keywords: 小型昆蟲搜尋;差動式諧波傳感器;射頻識別;差動曼徹斯特碼解碼器;身分識別功能;Small insects searching;Differential harmonic transponder;RFID;Differential Manchester decoder;Identification recognition
    Date: 2017
    Issue Date: 2019-07-17
    Publisher: 電機工程研究所
    Abstract: 隨著小型生物的研究越來越普遍,諧波雷達系統被廣泛的運用於這些研究實驗之中。然而,為了要從這些小型生物中得到更進一步的資料,諧波傳感器的特性好壞是很關鍵的部分,諸如其能被偵測的範圍、敏感度、或者是否具有身分識別的功能,都會影響著研究是否能順利的進行。因此,本論文針對諧波傳感器進行探討且分為兩個主要的主題,一個是關於蜜蜂搜尋的諧波雷達系統之小型生物傳感器的設計,另一個是關於諧波傳感器之具身分識別功能的數位差動曼徹斯特碼解碼器。關於第一個主題,主要是設計一個新型的諧波傳感器。此新型諧波傳感器成功地降低因蜜蜂身上的液體所造成的轉換率損耗且提升了天線增益。這新型諧波傳感器是設計成差動式,並且有兩個共振腔,共振頻率分別在9.4 和 18.8 GHz。它的尺寸很小,可以黏貼在蜜蜂身上且不影響其飛行。其天線在E-plane的全向性增益是在0 dB以上且因蜜蜂身上的液體所造成的轉換率損耗只有3-4 dB。這幾項改善能有效地擴大蜜蜂雷達的檢測範圍。而關於第二個主題,主要是一個擁有身分識別功能的數位差動曼徹斯特碼解碼器。此數位晶片不僅能從傳送端傳來的差動曼徹斯特碼的訊號解碼出身分資訊,且還能把解碼出的身分碼跟原始身分碼做比較,再依據比較結果回傳訊號給接收端。它的尺寸夠小可以被嵌入在諧波傳感器上,然後也可以更進一步地被使用在諧波雷達系統之中。這項研究能讓傳感器多了身分識別的功能,不再只局限於定位搜尋的功能。
    As the study of small creatures becoming more popular, harmonic radar system has been well used in those of the studies. However, in order to get more details from the small creatures, the performances of the harmonic transponder are very important, such as its detection range, sensitivity, or whether it combines identification recognition. Therefore, the harmonic transponder is discussed in this thesis. This thesis has two main topics, one is for a miniature transponder design in harmonic bee searching radar system, and the other one is for a digital differential Manchester decoder with identification recognition system in harmonic transponder. For the first topic, a new 9.4/18.8 GHz harmonic radar transponder for the bee searching radar is proposed. The proposed transponder reduces the degradation of the conversion rate from the loss of the bee’s body effect and promotes the antenna gain. It is designed in the way of differential operation with two resonate frequencies at 9.4 and 18.8 GHz. It also has a smaller size which can be mounted on bees. The omnidirectional gain in E-plane is above 0 dB and the degradation of the conversion rate from the loss of the bee’s body effect is 3-4 dB. This improvement is helpful to extend the detection range of the bee searching radar. For the second topic, a digital differential Manchester decoder with identification recognition system is proposed. The proposed digital chip can not only decode the differential Manchester signal from the transmitting end, but also compare the decoded ID with the original ID and then return back the signal which depends on the compared results. Its size is small enough to be embedded in the harmonic transponder, and further cooperate with the harmonic radar system as well.
    Appears in Collections:[電機工程研究所] 學位論文

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