Title :
A wideband interference tolerant RF receiver for cognitive radio sensor unit
Author :
Ollikainen, Jussi ; Kaltiokallio, Mikko ; Stadius, Kari ; Saari, Ville ; Ryynänen, Jussi
Author_Institution :
Dept. of Micro- & Nanosci., Helsinki Univ. of Technol., Helsinki, Finland
Abstract :
A wideband receiver for cognitive radio spectrum sensing unit is presented. The circuit consists of a high linearity low noise amplifier, passive mixer, and baseband buffer. IQ signals for the LO are generated using a divide-by-two circuit. Low noise amplifier includes common-gate common-source combination for simultaneous interference suppression and noise canceling. The receiver operates in the LTE bands at 0.7 - 2.6 GHz, with typical performance of 32 dB gain, 5 dB noise figure, and IIP3 linearity between 5 dBm and -1 dBm in the LTE bandwidth. The circuit is designed for 65-nm CMOS technology.
Keywords :
CMOS integrated circuits; cognitive radio; interference suppression; radio receivers; radio spectrum management; baseband buffer; cognitive radio spectrum sensing unit; frequency 0.7 GHz to 2.6 GHz; gain 32 dB; interference suppression; local oscillator; low noise amplifier; noise canceling; noise figure 5 dB; passive mixer; size 65 nm; wideband interference tolerant RF receiver; Broadband amplifiers; Circuit noise; Cognitive radio; Linearity; Low-noise amplifiers; Noise cancellation; Radio frequency; Radiofrequency interference; Receivers; Wideband;
Conference_Titel :
NORCHIP, 2009
Conference_Location :
Trondheim
Print_ISBN :
978-1-4244-4310-9
Electronic_ISBN :
978-1-4244-4311-6
DOI :
10.1109/NORCHP.2009.5397827
