用於伽利略衛星定位系統的窄頻低雜訊放大器和900MHz的信封消除還原功率放大器

本論文主要可分為二個部分，第一個部分是工作於伽利略衛星定位的低雜訊放大器。在這部分我們主要是希望可以把窄頻帶通濾波器與低雜訊放大器結合，使得此放大器有窄頻帶通濾波器的頻率響應，並且有不差的雜訊指數、增益之表現。最後我們將用0.18μm CMOS 的製程來實現。第二部分是工作於900MHz CDMA IS-95 的E類功率放大器和信封消除和還原系統。在現代的通訊系統中，我們通常希望可以長時間使用，並且有良好的收信品質。一般而言，切換式的功率放大器有較好的效率表現，但是他有較差線性度，所以會影響到通信品質。因此我們可以外加其他的電路來提高線性度，而信封消除和還原系統是其中的一種方式。最後我們將得到一個高效率和高線性度的功率放大器。

關鍵字

無線通信；伽利略衛星定位系統；低雜訊放大器； CDMA ； E類功率放大器；信封消除和還原系統

並列摘要

In first part of this thesis, a LNA was designed for Galileo satellite navigation system. The LNA combines with a narrowband band-pass filter. The LNA will have narrowband band-pass filter response, so we can reduce some components of Galileo system receiver. The narrowband LNA has good noise and gain. We implement the narrowband LNA in 0.18-μm CMOS process. In the second part, we designed a Class-E power amplifier in an envelope elimination and restoration system (EER) at 900MHz CDMA IS-95. In the modern communication systems, we hope good quality and long time of communication. Generally, the switch mode power amplifier has good efficiency, but this amplifier has poor linearity. Hence, we can improve linearity of this amplifier by EER system. Finally, we can get a good efficiency and linearity performance.

並列關鍵字

wireless communication system ； Galileo satellite navigation system ； LNA ； CDMA ； Class-E power amplifier ； EER

參考文獻

[2] Pozar, D. M. “Microwave Engineering (third edition),” NJ: John Wiley & Sons. 2005.

[6] Kholy, M. M. El. “Ultra Low Power Narrow Band LNA,” IEEE 2nd International Design and Test Workshop, pp. 38-42, Dec. 2007.

[7] Samavati, H., H. R. Rategh, and T. H. Lee “A 5-GHz CMOS Wireless LNA Receiver Front End,” IEEE Journal of Solid- Circuits, Vol. 35, No. 5, pp. 765-772, 2000.

[8] Darabi, H. “A Block Filtering Technique for SAW-Less Wireless Receivers,” IEEE Journal of Solid- Circuits, Vol. 42, No. 12, pp. 2766-2773, 2007.

[10] Shaeffer, D. K. and T. H. Lee “A 1.5V 1.5GHz CMOS Low Noise Amplifier,” IEEE Journal of Solid- Circuits, Vol. 32, No. 5, pp. 745-759, 1997.

國際替代計量

用於伽利略衛星定位系統的窄頻低雜訊放大器和900MHz的信封消除還原功率放大器

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