Title :
Reconfigurable baseband chain for Software-Defined Radio receivers
Author :
EL-Zomor, Tarek ; Soliman, Eman A. ; Mahmoud, Sabri A.
Author_Institution :
Electr. & Electron. Eng. Dept., German Univ. in Cairo, Cairo, Egypt
Abstract :
This paper presents single amplifier biquads and Active-gm-RC cells with programmable unity gain frequency operational amplifiers. A complete baseband chain for Software-Defined Radio is designed using these building blocks. The baseband chain consists of a reconfigurable low pass filter (LPF) and a variable gain amplifier (VGA). The LPF is a sixth order filter with cutoff frequency range from 380 kHz to 33.4 MHz. The VGA is made of two cascaded gain stages. The baseband chain is realized in 0.25 ¿m CMOS technology with 1.2 V supply voltage. PSPICE simulations are presented.
Keywords :
CMOS integrated circuits; SPICE; amplifiers; low-pass filters; radio receivers; software radio; CMOS technology; PSPICE simulations; frequency 380 kHz to 33.4 MHz; programmable unity gain frequency operational amplifiers; reconfigurable baseband chain; reconfigurable low pass filter; single amplifier biquads; software-defined radio receivers; variable gain amplifier; voltage 1.2 V; Baseband; CMOS technology; Cutoff frequency; Gain; Low pass filters; Operational amplifiers; Radiofrequency amplifiers; Receivers; SPICE; Voltage; Active-Gm-RC; programmable op-amps; software radio; software-defined radio; variable gain amplifier;
Conference_Titel :
Microelectronics (ICM), 2009 International Conference on
Conference_Location :
Marrakech
Print_ISBN :
978-1-4244-5814-1
DOI :
10.1109/ICM.2009.5418632
