本論文將超寬頻技術應用於不同的領域以實現一個使用無線脈衝供電之嶄新技術的超寬頻發射器。本研究應用ADS (Advanced Design System)電路模擬軟體進行電路設計、探討與分析，並以實作完整之無線傳能收發系統進行實測，成功驗證無線脈衝傳能之可行性以及電路之效能，此驗證結果相當適合用於低輸入功率之傳能及生醫應用。
為了實現超寬頻能量之發送，必頇設計一個超寬頻脈波產生器，吾人使用步階恢復二極體(Step Recovery Diode, SRD)搭配離散元件製作出一漣波雜訊(Ringing)極低且對稱性極佳之脈波產生電路，其產生脈衝振幅範圍為310mV到876mV、寬度皆為290ps。為了達到超寬頻脈衝波無線供電的目標，必頇考量所產生之脈衝波是否有足夠的頻寬及振幅是否能夠提供足夠的能量，在此使用一頻寬為6GHz之寬頻功率放大器來提升整體超寬頻無線供電發射器的發射能量，以利無線與生醫植入之應用。
超寬頻脈衝波無線供電發射器包含了超寬頻脈衝產生器、寬頻功率放大器、超寬頻天線以及倍壓整流電路，本研究將其逐一實現並以系統整合驗證。為了有效的傳遞UWB能量，發射端天線使用指向性佳、高增益且有著寬頻特性之Horn antenna。超寬頻脈波產生器所產生的脈波訊號經由寬頻功率放大器放大後提供較大的能量並且經由Horn antenna傳遞能量到接收端之超寬頻天線，其所收到之脈衝微波能量送到經由使用Schottky diode組成之倍壓整流電路轉換成直流電壓與電流，供給電池或晶片使用。
在本篇論文此超寬頻脈衝波無線傳能系統已驗證出在整流器輸入功率低於0dBm之低平均功率下仍然可以達成高效率(>80%)的能量轉換。低平均功率的傳能對人體的影響與傷害較小，是生醫植入裝置或晶片不可或缺的一個關鍵技術，且相較於傳統連續波(Contiuous Wave, CW)之高效率無線供電系統在其整流器最佳轉換效率負載與操作設定下，其微波能量接收端之整流器最佳工作點平均輸入功率可減少至20%以下，其能量轉換效率更可高達80%；在脈衝波產生之能量為最佳效率點(頻率為40MHz、振幅為2Vpp到5Vpp方波觸發之超寬頻脈衝波)時，其脈衝波充電系統能更進一步達成90%以上之極高能量轉換效率。此研究結果將對應用於生醫植入裝置上之無線傳能系統帶來一個重大的發現與影響。

This thesis applies UWB technologies in a special aspect for the transmission of energy rather than messages to achieve a novel wireless impulsive powering approach. An UWB transmitter utilizing wireless impulsive powering is implemented. Advanced Design System (ADS), the integrated circuit simulation software, is applied to design,investigate, and analyze the circuits of the impulsive wireless power transmission systems. The whole wireless power transmitting and receiving systems are implemented to validate the feasibility of the wireless impulsive powering and the conversion efficiency of the rectifier circuitry. Experimental results prove that this technique is quite suitable for low input power transmission and biomedical applications.
The UWB pulse generator is designed and developed to fulfill the UWB power transmission. The UWB pulse generator uses step recovery diodes (SRD) combined with discrete components to produce a low ringing and well symmetry monocycle pulse whose peak-to-peak amplitude ranges from 310 mV to 876 mV and pulse width remains 290 ps. In order to achieve the UWB impulsive wireless powering, the bandwidth and amplitude of the UWB pulse shall be considered for sufficient transmission power. For biomedical implant chips and devices, the broadband 6-GHz power amplifier (2GHz-8GHz) is attached to increase the deliverable power of the wireless UWB power supplier.
The UWB impulsive wireless transmission systems include an UWB pulse generator, a broadband power amplifier, an UWB antenna, and a voltage-doubler rectifier. Each module is implemented and the whole system is integrated and valiated. In order to deliver the UWB power efficiently, a horn antenna with high directivity, large gain, and broad bandwidth acts as the transmit antenna. The power of impulsive signals generated by the UWB pulse generator is amplified by the broadband power amplifier and then delivered through the horn antenna. And the received impulsive power is converted by the voltage-doubler rectifier composed of Schottky diodes into a direct current (DC) power to supply the chips or batteries.
In this thesis, the UWB impulsive wireless transmission systems have been proved to achieve high power conversion efficiency (PCE), larger than 80% even when the input power of the rectifier is lower than 0 dBm. Due to the fact that low transmission power has relatively little impacts and causes relatively slight injury to human bodies, it is one of the essential key technologies in biomedical implant chips and devices. Compared to the traditionally continuous wave (CW) powering systems recfiliers oprated at the optimal transmission efficiency condition setup and the specific value load resistor, the overall transmission power to recfilier has been reduced by at least 80%, and the transmission efficiency can still achieve up to 80%. At the operation condition of the optimal power efficiency (the pulse generator is trigger by the 40MHz 2Vpp to 5Vpp square waves, the conversion efficiency of our proposed impulsive system attains to more than 90%, which is the outstanding. These research results will contribute to and make significant impacts on wireless remote powering systems for biomedical implant devices in the future.

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