Title :
An optical receiver with automatic gain control for radio-over-fiber system
Author :
Yan, Chen ; Luhong, Mao ; Shilin, Zhang ; Sheng, Xie ; Xindong, Xiao ; Ye, Tian ; Chunpu, Yang
Author_Institution :
Dept. Microelectron. & Solid-State Electron., Tianjin Univ., Tianjin, China
Abstract :
An optical receiver circuit with automatic gain control (AGC) for radio-over-fiber (RoF) system is presented. The AGC optical receiver is designed on the standard 0.18 μm CMOS technology. The proposed circuit uses a differential variable gain amplifier (VGA), implemented by a Gilbert cell and provides an exponential function circuit for the dB linearity of the gain voltage. A large dynamic range of the receiver is from 13 dB to 75 dB. The AGC loop bandwidth is 3.3 GHz, with a power consumption of 101 mW and a low noise current of 1.45 μA, and the eye diagram of the receiver is also good.
Keywords :
CMOS integrated circuits; amplification; amplifiers; automatic gain control; optical receivers; radio-over-fibre; AGC optical receiver; CMOS technology; Gilbert cell; RoF system; VGA; automatic gain control; current 1.45 muA; exponential function circuit; frequency 3.3 GHz; gain 13 dB to 75 dB; gain voltage; large dynamic range; optical receiver circuit; power consumption; radio-over-fiber system; size 0.18 mum; variable gain amplifier; Automatic generation control; Bandwidth; Detectors; Gain; Gain control; Optical receivers; automatic gain control; exponential function circuit; optical receiver; peak detector; radio over fiber; variable gain amplifier;
Conference_Titel :
Electron Devices and Solid-State Circuits (EDSSC), 2011 International Conference of
Conference_Location :
Tianjin
Print_ISBN :
978-1-4577-1998-1
Electronic_ISBN :
Pending
DOI :
10.1109/EDSSC.2011.6117661
