Title :
Flexible baseband Low-Pass Filter and Variable Gain Amplifier for Software Defined Radio Front End
Author :
Giannini, V. ; Craninckx, J. ; Compiet, J. ; Come, B. ; Amico, S.D. ; Baschirotto, A.
Author_Institution :
Dept. of Innovation Eng., Lecce Univ.
Abstract :
Analog blocks intended for software defined radio have to be targeted to multi-standard operation trying to guarantee at any time a near optimal power-performance trade-off. A novel approach to design a digitally programmable low pass filter (LPF) and variable gain amplifier (VGA) is here defined. These baseband blocks are driven by a network-on-chip that is able to set performances like cut-off frequency, selectivity, noise, and gain conveniently adapting the power consumption. The LPF provides a wide frequency tuning range between 0.35MHz and 23.5MHz with an adaptive integrated noise level between 85muVrms and 163muVrms and a current consumption that moves from 1.5mA to 18mA. The VGA is made up of 2 cascaded gain stages and provides a gain range from 0dB to 39dB. The prototype was realized in 0.13mum CMOS technology. Measurements results validate the adopted approach
Keywords :
low-pass filters; microwave amplifiers; network-on-chip; software radio; 0 to 39 dB; 0.13 micron; 0.35 to 23.5 MHz; CMOS technology; VGA; baseband low-pass filter; digital programmable low pass filter; multistandard operation; network-on-chip; software defined radio; variable gain amplifier; Baseband; CMOS technology; Cutoff frequency; Energy consumption; Low pass filters; Network-on-a-chip; Performance gain; Radiofrequency amplifiers; Software radio; Tuning;
Conference_Titel :
Solid-State Circuits Conference, 2006. ESSCIRC 2006. Proceedings of the 32nd European
Conference_Location :
Montreux
Print_ISBN :
1-4244-0303-0
DOI :
10.1109/ESSCIR.2006.307566
