高速類比適應式等化器之設計及實作

Design and Implementation of a High-Speed Analog Adaptive Equalizer

林叡杰(Jui-Chieh Lin)

指導教授 ： 陳少傑

共同指導教授 ： 張棋(Chi Chang)

國立臺灣大學/電機資訊學院/電子工程學研究所/碩士(2007年)

https://doi.org/10.6342/NTU.2007.10414

摘要

在逐漸提升頻率的訊號傳輸領域中及有限的通道頻寬(Channel Bandwidth)下，如何增加資料的傳輸並減少其錯誤率為越來越重要的課題。等化器一直是高頻傳輸系統架構中的重要電路。尤其當傳輸速率到達數億赫茲，使用類比電路實現的等化器，且為了適應通道隨溫度及時間的變化，採用適應式的電路架構，對於訊號的回復更是一個可行的方式。本論文探討使用濾波器方式實現的可調控式類比等化器電路，利用變容器及操作在三極體區的電晶體當電阻作為調控機制。此等化器使用TSMC 0.18μm 1P6M CMOS製程。

關鍵字

等化器 ； 類比等化器 ； 連續時間濾波器 ； 接收器

並列摘要

Nowadays, data transmission operates at a very high speed. However as the transmission data rate becomes higher, the signal suffers from more severe frequency dependent magnitude loss due to the channel limited bandwidth. Analog adaptive equalizer has been proven of great use to compensate the non-ideality. Along with the adaptability, analog equalizer is capable of giving adequate boosting to time and temperature varying channel loss. In the Thesis, an analog filter fabricated in TSMC 0.18μm 1P6M CMOS technology is designed. MOS varactor and transistor in triode region acts as variable resistor is applied for adaptability.

並列關鍵字

equalizers ； adaptive equalizers ； continuous time filters ； receiver

參考文獻

[1] B. Razavi, Design of Integrated Circuits for Optical Communications, McGraw-Hill, Inc., 2003.

[2] J. S. Choi, M. S. Hwang, and D.K. Jeong, “A 0.18-μm CMOS 3.5-Gb/s Continuous-Time Adaptive Cable Equalizer Using Enhanced Low-Frequency Gain Control Method,” IEEE Journal of Solid-State Circuits, vol. 39, no. 3, pp. 419–425, Mar. 2004.

[5] J. N. Babanezhad, “A 3.3-V Analog Adaptive Line-Equalizer for Fast Ethernet Data Connection,” in Proc. IEEE Custom Integrated Circuit Conference, pp. 343–346, May 1998.

[6] D. W. Chou,”A-10Gb/s Adaptive Equalizer in 0.18-μm CMOS Technology,” Master Thesis, National Taiwan University, Taipei, Taiwan, Jul. 2005.

[8] M. M. Green and U. Singh, “Design of CMOS CML Circuits for High-Speed Broadband Communications,” in Proc. IEEE Int. Symp. Circuits and Systems, vol. II, pp. 204-207, May 2003.