A 30MHz–2.4GHz CMOS receiver with integrated RF filter and dynamic-range-scalable energy detector for cognitive radio

Author

Kitsunezuka, Masaki ; Kodama, Hiroshi ; Oshima, Naoki ; Kunihiro, Kazuaki ; Maeda, Tadashi ; Fukaishi, Muneo

Author_Institution

NEC Corp., Kawasaki, Japan

fYear

2011

fDate

5-7 June 2011

Firstpage

1

Lastpage

4

Abstract

A 30MHz-2.4GHz CMOS receiver with a highly linear integrated tunable RF filter, as well as with a dynamic-range-scalable RSSI-based energy detector for both whitespace and interference-level sensing, is reported. The test chip, fabricated in 90-nm CMOS process, achieves over 42dB harmonic rejection including seventh-order harmonic without any external device, 67dB gain, 5-8dB NF, +1.7dBm in-band IIP3, and +37dBm IIP2 while drawing only 25-37mA from 1.2V supply.

Keywords

CMOS integrated circuits; cognitive radio; radiofrequency filters; CMOS receiver; RSSI-based energy detector; cognitive radio; current 25 mA to 37 mA; dynamic-range-scalable energy detector; frequency 30 MHz to 2.4 GHz; gain 67 dB; interference-level sensing; linear integrated tunable RF filter; size 90 nm; voltage 1.2 V; whitespace sensing; Band pass filters; CMOS integrated circuits; Detectors; Harmonic analysis; Power harmonic filters; Radio frequency; Receivers; Cognitive radio; RF filters; energy detectors; wideband receivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits Symposium (RFIC), 2011 IEEE

Conference_Location

Baltimore, MD

ISSN

1529-2517

Print_ISBN

978-1-4244-8293-1

Electronic_ISBN

1529-2517

Type

conf

DOI

10.1109/RFIC.2011.5940629

Filename

5940629