A 240MHz programmable gain amplifier & filter for ultra low power low-rate UWB receivers

Author

D´Amico, S. ; Baschirotto, A. ; Philips, K. ; Rousseaux, O. ; Gyselinckx, B.

Author_Institution

Dept. of Innovation Eng., Univ. of Salento, Lecce, Italy

fYear

2009

fDate

14-18 Sept. 2009

Firstpage

260

Lastpage

263

Abstract

A 90 nm-CMOS power-optimized Programmable Gain Amplifier (PGA) for Ultra Low power Low Rate-Ultra Wide Band (LR-UWB) receivers is illustrated. The PGA features a 0-40 dB programmable gain range with a 5dB gain-step. In addition it implements a 6^th -order 240 MHz Bessel lowpass transfer function. The cut-off frequency is about constant, independently on the different gain settings. At 40 dB gain, the input 1 dBcp is -44.8dBm, and the NF is 14.3 dB. The current consumption (1.9 mA at 0 dB-gain up to 2.9 mA at 40 dB-gain) is optimized by including the opamp performance in the cell transfer function, and accordingly to the selected gain level.

Keywords

Bessel functions; CMOS integrated circuits; VHF amplifiers; VHF filters; low-pass filters; low-power electronics; operational amplifiers; programmable circuits; radio receivers; radiofrequency integrated circuits; transfer functions; ultra wideband communication; Bessel lowpass transfer function; CMOS programmable gain amplifier; cell transfer function; frequency 240 MHz; gain 40 dB; gain 5 dB; low pass filter; noise figure 14.3 dB; opamp performance; size 90 nm; ultra low power low-rate UWB receiver; ultra wide band receiver; Bandwidth; Baseband; CMOS technology; Circuits; Cutoff frequency; Electronics packaging; Energy consumption; Filters; Transfer functions; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

ESSCIRC, 2009. ESSCIRC '09. Proceedings of

Conference_Location

Athens

ISSN

1930-8833

Print_ISBN

978-1-4244-4354-3

Type

conf

DOI

10.1109/ESSCIRC.2009.5326006

Filename

5326006