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研究生:陳憲部
研究生(外文):Chen, Hsien-Pu
論文名稱:應用於WCDMA高動態範圍之自動控制增益放大器
論文名稱(外文):High Dynamic Range Automatic Gain Control Amplifier for WCDMA Application
指導教授:徐永珍徐永珍引用關係
指導教授(外文):Klaus Yung-Jane Hsu
學位類別:碩士
校院名稱:國立清華大學
系所名稱:電子工程研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2004
畢業學年度:92
語文別:中文
論文頁數:51
中文關鍵詞:自動增益放大器可變增益放大器高動態增益範圍
外文關鍵詞:AGCVGAHigh Dynamic Range
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積體電路應用於無限通訊是近代的潮流,尤其是第三代無線通訊系統。在這篇論文中,提出一個自動增益放大器,應用於直接耦合的WCDMA通訊系統,其操作頻率在2.4GHz。該電路是由TSMC 0.35um SiGe BiCMOS製程所提供,其主要功能有高的動態增益範圍,且可以抵抗直流準位偏移的影響。其自動增益放大器的子電路包括可變增益放大器(Variable Gain Control Amplifier),峰值偵測器(Peak Detector),比較器(Comparator),電壓轉換器(V-V Converter)和偏壓電路(Bandgap Circuits)。在自動增益放大器的電路裡,有四級可變增益放大器,信號經由四級放大器放大,由峰值偵測器偵測其輸出信號,經由比較器比較,產生一個控制電壓,控制可變增益放大器的增益大小。若輸出信號太小,則負迴授迴路機制會把信號放大;若輸出信號太大,則負迴授迴路機制會把信號縮小,直到把輸出信號鎖在我們設計的值,也就是1Vpp。在模擬的結果可以得知,該電路有107dB的可調增益範圍。在全諧波失真要好於30dBc與輸出信號鎖在1Vpp的條件下,有69dB的動態增益範圍。該電路是操作在3.3V的電壓,其主要電路共消耗1.6mW的功率。最後,分析與比較其量測與模擬的結果。
There is a current trend in monolithic integration for wireless transceivers. This technique is wildly used in the 3G communications system. In this paper, it was proposed to design a high dynamic range AGC with an automatic DC offset cancellation. The AGC is designed for the direct conversion WCDMA system operating at 2.4GHz. The circuits are fabricated using TSMC 0.35um SiGe BiCMOS process. The performance of the AGC will not be affected by the DC offset effects, and the high dynamic range is increased by the large gain tuning range. As the simulation results, the circuit achieves a 107dB continuous gain tuning range, [-27dB, 80dB], with 69dB dynamic range for differential output voltage set to 1Vpp and a THD better than 30dBc. The AGC’s core circuits are powered by 3.3V with 1.6mW power consumption. Finally, it has discussed with comparing the simulation and measurement results.
參考文獻

【1】 Friedhelm Hillebrand, “GSM and UMTS, The Creation of Global Mobile Communication”, John Wiley & Sons, LTD, 2002.

【2】 Chorng-Kuang Wang, Po-Chiun, “An Automatic Gain Control Architecture for SONET OC-3 VLSI”, Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on , Volume: 44 Issue: 9 , Sept. 1997.

【3】 H. Meyr and G. Rein, Ascheid, “Synchronization in Digital Communications”, New York, Wiley, 1990, vol. 1.

【4】 Paul R. Gray, etc, “Analysis and Design of Analog integrated circuits”, 4th Edition, Wiley, 2000.

【5】 Po-Chiun Huang, Chen-Yi Huang, Chorng-Kuang Wang, ”A 155-MHz BiCMOS automatic gain control amplifier”, Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on, 1999.

【6】 Phillip E. Allen, Douglas R. Holberg, “CMOS Analog Circuit Design”, 2ed Edition, Oxford, 2002.

【7】 Drefiski T., Desclos L., Madihian M., Yoshida H., Suzuki H., Yamazaki T., ” A BiCMOS 300 ns attack-time AGC amplifier with peak-detect-and-hold feature for high-speed wireless ATM systems”, Solid-State Circuits Conference, 1999. Digest of Technical Papers. ISSCC. 1999 IEEE International.

【8】 Hung Yan Cheung, King Sau Cheung, Lau J., ” A low power monolithic AGC with automatic DC offset cancellation for direct conversion hybrid CDMA transceiver used in telemetering”, Circuits and Systems, 2001. ISCAS 2001.

【9】 Behzad Razavi, “Design of Analog CMOS Integrated Circuits”, McGRAW -HALL International Edition, 2001.

【10】 David Johns, Ken Martin, “Analog Integrated Circuit Design”, John Wiley & Sons, LTD, 1997.

【11】 Khoury, J.M., ” On the design of constant settling time AGC circuits”, Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on , Volume: 45 Issue: 3 , 1998.

【12】 F.Balteanu, M.Cloutier, “Charge-Pump Controlled Variable Gain Amplifier”, Electronics Letters, Volume: 34 Issue: 9, 30 April 1998.

【13】 Shoji Otaka, Gaku Takemura, “A low-power low-noise accurate linear-in-dB variable gain amplifier with 500 MHz bandwidth”, Solid-State Circuits Conference, 2000.
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