Title :
Direct-conversion receiver for ubiquitous communications
Author :
Kaukovuori, J. ; Jarvinen, J.A.M. ; Ryynanen, J. ; Jussila, J. ; Kivekas, K. ; Halonen, K. A L
Author_Institution :
Lab. of Electron. Circuit Design, Helsinki Univ. of Technol., Espoo, Finland
Abstract :
A direct-conversion receiver for a 2.4-GHz sensor network is described. The receiver is designed to operate in a Bluetooth system where slight changes are made in the radio parameters to meet the low power requirement. The receiver includes an LNA, downconversion mixers, a 90-degree phase shift circuit, analog filters, a 1-bit analog-to-digital converter, and a received signal strength indicator (RSSI). The receiver consumes 4.1 mA from a 1.2-V power supply and it achieves 43-dB voltage gain, 25-dB noise figure, -22-dBm IIP3, and +11-dBm IIP2.
Keywords :
Bluetooth; radio receivers; wireless sensor networks; 1.2 V; 2.4 GHz; 25 dB; 4.1 mA; 43 dB; Bluetooth system; LNA; UHF; analog filters; analog-to-digital converter; direct-conversion receiver; downconversion mixers; phase shift circuit; received signal strength indicator; sensor network; ubiquitous communications; Baseband; Circuits; Energy consumption; Low-noise amplifiers; Prototypes; Radio frequency; Radio transmitters; Sensor systems; Testing; Voltage;
Conference_Titel :
Radio and Wireless Symposium, 2006 IEEE
Print_ISBN :
0-7803-9412-7
DOI :
10.1109/RWS.2006.1615105
