| 摘要(英) |
With the increasing demands at data bandwidth in the last mile, network access Ethernet optical network (EPON) is considered on a promising technology to meet the demands of data transmission capability in the future. Based on fiber to the home (FTTH) technology and point-to-multipoint optical network configuration. It provides up to 1 Gbps data rate which is suitable for multi media communication.
This thesis describes the design of burst mode receiver front-end, including a transimpedance amplifier (TIA) and a post limiting amplifier (LIA). To investigate low noise design technology with Butterworth and Bessel type TIAs are proposed analysis and their characteristic are compared in which from ISI and main points of view. Also, a method of novel constant damping factor is to maintain stability and group delay when gain switches.
This thesis explores circuit techniques for optical receiver front-end design in 0.18μm CMOS technology. The objective goals of this research are to realize a single chip of 1.8V 2.5 Gbps burst mode optical receiver front-end ICs. In the receiver front-end circuit, in order to amplifying signal correctly in short time. We adopt the skills of DC couple and feed-forward offset cancellation. the transimpedance amplifier receives the photocurrent produced by photodiode and transforms it to voltage output. Because the output of TIA is single phase signals, we need ATC to produce the threshold voltage to change the signal into the differential signal to input to LIA. The limiting amplifier further enlarges the tiny voltage to a fixed and sufficiently large output voltage. In order to enhance the input dynamic range, an automatic switch gain control circuit is included in TIA design. Under 1.8V supply voltage, the TIA provides a conversion gain of 66dB? with a –3dB bandwidth of 1.96GHz, and its input dynamic range is from –25dBm to -6dBm. In the design of limiting amplifier, we adopt the method of active feedback to make every node to present low impedance, and has no loss of loading effect. It achieves an input sensitivity of 11.4mV, -3dB bandwidth of 3GHz and conversion gain of 32.6dB, and the output voltage is fixed at 660mV under 1.8V voltage operation. |
| 參考文獻 |
[1] IEEE 802.3 ah Ethernet in the First Mile Task Force, Draft 1.414, April 2003.
[2] Recommendation ITU-T G.983.
[3] Glen Kramer, Gerry Pesavento, “Ethernet Passive Optical Network (EPON): Building a Next-Generation Optical Access Network”, pp.66-73, IEEE Communication Magazine, Feb. 2002.
[4] Chao Su, Lian-Kuan Chen, and Kwok-Wai Cheung,, “Theory of burst-mode receiver and its applications in optical multiaccess networks”, Journal of Lightwave Technology, vol. 15, no. 4, Apr. 1997.
[5] Y. Ota et al., “High-speed, burst-mode, packet-capable optical receiver and instaneous clock recovery for optical bus operation,” J. Lightwave Technol., vol. 12, Feb. 1994.
[6] Y. Ota and R. G. Swartz, “Burst mode compatible optical receiver with large dynamic range,” J. Lightwave Technol., vol. 8, pp. 1897–1903,Dec. 1990.
[7] C. A. Eldering, “Theoretical determination of sensitivity penalty of burst-mode fiber optic receiver,” J. Lightwave Technol., vol. 11, pp.2145–2149, Dec. 1993.
[8] Kim, H.H.; Chandrasekhar, S.; Burrus, C.A., Jr.; Bauman, J., “A Si BiCMOS transimpedance amplifier for 10-Gb/s SONET receiver,” Solid-State Circuits, IEEE Journal of , Volume: 36 Issue: 5 , May 2001 Page(s): 769 –776
[9] Behazed Razavi, Design of Integrated Circuits for Optical Communications. 2002
[10] Ja-Won Seo, Sub Han, Quan Le, Sang-Gug Lee, Man-Seop Lee and Tae-Whan Yoo, “A Novel 1.25Gb/s Preamplifier with High Sensitivity and Peak Detector with High Accuracy for the Burst-mode Optical Receiver Using a 0.18um CMOS Technology”, ISPC (International Signal Processing Conference), Apr. 2003.
[11] Behzad Razavi,10Gbps Limiting Amplifier ISSCC2003. |
[Endnote RIS 格式]
[相關文章]
[文章引用]
[完整記錄]
[館藏目錄]
[檢視]
plurk
funp
live
udn
HD
myshare
netvibes
friend
youpush
delicious
baidu
Google bookmarks
del.icio.us
hemidemi
facebook
twitter
google
reddit