本論文分別針對應用於冷鏈物流車之藍芽感測器天線與內建於手持式裝置內之微型化VHF頻段天線進行研究。第一部分探討藍芽無線感測裝置所需之節點天線，以期在物流金屬貨櫃中能有效無線連結而達到高讀取率之需求。考量裝置尺寸與應用環境之電波傳播特性，乃以平面式倒F天線為主結構，設計出具側向輻射場型的高效能藍芽感測器天線。由於貨櫃內之堆疊環境會使電波傳播特性改變而產生多重路徑干擾與衰減現象，本研究亦針對恆溫箱可能的應用情境來實測驗證天線效能，以滿足冷鏈物流中藍芽無線感測裝置的應用要求。第二部分則針對智慧防救災所使用之VHF頻段通訊系統，提出兩款可安裝於手持式裝置內之微型化天線，而為了因應智慧型手機時代的來臨及達到行動裝置輕薄短小的要求，本計畫針對市售之智慧型手機尺寸進行微型化VHF頻段天線設計，分別使用蜿蜒式平面繞線與立體螺旋形式結構進行設計，用以縮小天線尺寸，同時搭配可重置電路以涵蓋計畫所需之頻段需求，並使用收發機實測驗證天線效能，期能提升行動裝置內建VHF頻段通訊模組之發射及接收效果。

This thesis divided into two part. First part is to investigate the bluetooth sensor antenna to be applied for cold-chain logistic. And the second part is to design a miniaturized VHF antenna which can be embedded in a handheld device for the
emergency system.
In order to achieve effective wireless connection in metallic cargo container. An efficient bluetooth sensor antenna is needed. For the stack rich environments, lateral radiation pattern is used to avoid the wave propagate through the contents in the themal insulated box. For this demand, planar inverted-F antenna structures are studied to design the sensor antenna in this research. Further, by considering the wave propagation properties of the real environments. The field test in the relevant scenario
is to evaluate associated fading effects and verify the antenna performance.
The second part is about an miniaturized VHF antenna used to be embedded in a handheld device for the emergency system. The proposed antennas are embedded in a PCB test board with the size of 134×64mm2 to model a smart phone. For such long wavelength, helical and meander structures are preferred for the embedded antenna designs in the handheld device. However, the bandwidth is too narrow to cover the required VHF band. Therefore, a reconfigurable circuit is proposed in this work. By using the control circuits, the operation frequency can be switched within the required bandwidth covering 136~174MHz. And the antenna performance is test by using the
VHF tranceiver .

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