Title :
Dynamic range boosting for wireless optical receivers
Author :
Cura, José Luis ; Aguiar, Rui L.
Author_Institution :
Dept. de Electron. e Telecoms, Aveiro Univ., Portugal
Abstract :
This paper presents a dynamic range boosting technique for wireless optical receivers. This technique changes the feedback impedance of the transimpedance amplifier by the control of multiple parallel transistors in the triode region. This strategy results in a wide controllable gain amplifier, without extra signal-to-noise ratio penalties. A front-end with 20 MHz bandwidth, maximum transimpedance gain of 130 dB Ω and a minimum dynamic range of 60 dB is implemented with this technique for wireless optical Ethernet and ATM applications
Keywords :
asynchronous transfer mode; feedback amplifiers; optical receivers; wireless LAN; 20 MHz; ATM applications; Ethernet; controllable gain amplifier; dynamic range boosting; feedback impedance; multiple parallel transistors; signal-to-noise ratio penalties; transimpedance amplifier; transimpedance gain; triode region; wireless optical receivers; Bandwidth; Boosting; Dynamic range; Gain; Impedance; Optical amplifiers; Optical feedback; Optical receivers; Signal to noise ratio; Stimulated emission;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.922330
