透過您的圖書館登入
IP:18.220.160.216
  • 學位論文

電流再利用之低雜訊放大器設計應用於4-8GHz

Design of Low Noise Amplifier with Current-Reused in 4-8GHz

指導教授 : 廖裕評
共同指導教授 : 黃至堯

摘要


本論文研製之低雜訊放大器,是使用TSMC 0.18 CMOS製程來做設計,採用電流再利用的結構並疊接於共源級放大器。此低雜訊放大器具有高增益、低雜訊且面積小的優點。第一級電路部分是使用帶通濾波器來做input matching,第二級電路,利用疊接方式使用電流再利用的架構來達到電流重複使用,以降低功率消耗。最後一節電路為一源級隨偶器,做一個電路輸出緩衝的功用,並來做output matching。供應電壓為1.8伏特,本研究的低雜訊放大器,順向增益(S21)在4-8GHz為平均為17dB,最高為20dB。逆向隔離(S12)為-30dB以下,S11為-10dB以下,S22為-10dB以下。而平均雜訊指數約為2.9dB,最低為2.7dB。

並列摘要


A current-reused two-stage low noise amplifier (LNA) topology is proposed, which adopts a series inter-stage resonance and optimized substrate resistance of individual transistors. The characteristics of the series inter-stage resonance with gain enhancement are compared with other alternatives. The proposed LNA is implemented based on a 0.18μm CMOS technology for 4-8 GHz WLAN. Simulation results show that the power gain is 20 dB and minimum Noise Figure (NF) is 2.7dB with the dc power supply is 1.8V.

並列關鍵字

LNA WLAN power gain Noise Figure (NF)

參考文獻


Reference
[1] Bevilacqua, and Ali M. Niknejad, “An Ultrawideband CMOS Low-Noise Amplifier for 3.1-10.6 GHz Wireless Receivers,” in IEEE Journal of Solid-State Circuits, vol.39, No.12, 2005, pp. 2259-2268
[2] C. W. Kim, M.-S. Kang, P.T. Anh, H.-T. Kim and S.-G. Lee, “ An Ultra-Wideband CMOS Low Noise Amplifier for 3-5 GHz UWB System,” in IEEE Journal of Solid-State Circuits, vol.40, No.2,2005,pp.544-547
[3] J. Jung, K. Chung, T. Yun, J. Choi, and H. Kim, “ Ultra-wideband low noise amplifier using a cascade feedback toplogy,” in Silicon Monolithic Integrated Circuits in RF System Dig., 2006, 202-205.
[4] Y.J. Lin, S. S. H. Hsu, J.-D. Jin and C. Y. Chan, “A 3.1-10.6 GHz Ultra-Wideband CMOS Low Noise Amplifier with Current-Reused Technique,” in IEEE Microwave and Wireless Components Letters, vol.17, No.3, 2007, pp.232-234.

延伸閱讀