Title :
A digital frequency synthesizer for cognitive radio spectrum sensing applications
Author :
Rapinoja, Tapio ; Stadius, Kari ; Xu, Liangge ; Lindfors, Saska ; Kaunisto, Risto ; Pärssinen, Aarno ; Ryynänen, Jussi
Author_Institution :
Dept. of Micro- & Nanosci./SMARAD2, Helsinki Univ. of Technol., Espoo, Finland
Abstract :
This paper presents a wide-band digital frequency synthesizer architecture targeted for spectrum sensing applications. The proposed digital period synthesizer (DPS) architecture can achieve wide operational bandwidth, extremely high frequency resolution and short settling time with low power and area consumption. The frequency synthesizer was implemented in a 65-nm CMOS process and it occupies 0.12 mm2 active area. The frequency range of the synthesizer is from 0.1 GHz to 4.267 GHz with 0.025-5.38 Hz frequency resolution. In this range, the settling time for any arbitrary frequency jump is less than 30 ns. The power consumption ranges from 3.6 to 8.4 mW.
Keywords :
cognitive radio; frequency synthesizers; spread spectrum communication; CMOS process; cognitive radio spectrum sensing applications; frequency 0.025 Hz to 5.38 Hz; frequency 0.1 GHz to 4.267 GHz; power 3.6 mW to 8.4 mW; size 65 nm; wideband digital frequency synthesizer; Circuit synthesis; Cognitive radio; Delay; Energy consumption; Frequency conversion; Frequency synthesizers; Phase noise; Protocols; Signal generators; Signal synthesis; Cognitive radio; digital; frequency synthesis; spectrum sensing;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium, 2009. RFIC 2009. IEEE
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-3377-3
Electronic_ISBN :
1529-2517
DOI :
10.1109/RFIC.2009.5135572
