- 學位論文
利用單一化參數方法進行羅特曼透鏡設計
Employing the Parameter Singularization Method for Rotman Lens Design
摘要
超寬頻技術（UWB）因其公分級定位精度、低功耗、高安全性、高速傳輸和強抗干擾能力，成為最精準的室內定位技術之一，由於UWB使用短脈衝波來進行傳輸的，因此，UWB也面臨訊號衰減嚴重的問題。本論文針對5~10GHz頻段，提出使用羅特曼透鏡（Rotman lens）進行波束成型和相位轉換，以實現能量聚焦，提高高頻電磁波的傳輸距離。 本論文僅使用2個虛擬埠就可以讓羅特曼透鏡達成波束成型的效果，且使用單一化參數方法就可以知道所有的輸入埠的反射係數以及隔離度接有達到-10dB以及-15dB以下，輸出埠由於實作誤差的關係，反射係數在7GHz以上時在-10dB以上，而隔離度有達到-15dB以下的標準，且可以產生±45° 、±30° 、±15° 以及0°的波束方向。
並列摘要
Ultra-Wideband (UWB) technology, known for its centimeter-level positioning accuracy, low power consumption, high security, high-speed transmission, and strong anti-interference capabilities, has become one of the most precise indoor positioning technologies. Due to UWB's use of short pulse waves for transmission, it also faces significant signal attenuation issues. This thesis proposes using Rotman lenses for beamforming and phase shifting in the 5-10GHz frequency range to achieve energy focusing and improve the transmission distance of high-frequency electromagnetic waves. This paper uses only two dummy ports to achieve the beamforming effect of the Rotman lens, and uses a Parameter Singularization Method to know that the reflection coefficient and isolation coefficient of all input ports reach -10dB and below -15dB. Due to the implementation error of the output port, the reflection coefficient is above -10dB for frequencies above 7GHz, while the isolation coefficient has a standard of below -15dB, and can produce ±45°,±30°,±15° and 0° beam direction.