Title :
A 52 pJ/bit OOK transmitter with adaptable data rate
Author :
Raja, M. Kumarasamy ; Xu, Yong Ping
Author_Institution :
Dept of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
A 433-MHz OOK transmitter with adaptable data rate is presented. The proposed circuit completely turns off the transmitter during the transmission of dasia0psila and employs a speed-up scheme to obtain high data rates and low wake up time. The data rate can be adjusted and adapted to the need of applications. Realized in 0.35-mum CMOS technology, the OOK transmitter has a measured output power of -12.7 dBm with a dc power consumption pf 560 muW under a 1-V power supply, and a data rate of 3 Mb/s, yielding an energy efficiency of 187 pJ/bit or 3.48 nJ/bit/mW if normalized to the transmitting power. When the proposed speed-up circuitry is enabled, data rate increases to 10 Mb/s, with a dc power consumption of 518 muW achieving a energy efficiency of 52 pJ/bit or 0.97 nJ/bit/mW when normalized.
Keywords :
CMOS integrated circuits; UHF integrated circuits; amplitude shift keying; radio transmitters; CMOS technology; OOK transmitter; adaptable data rate; bit rate 3 Mbit/s; dc power consumption; frequency 433 MHz; power 518 muW; power 560 muW; size 0.35 mum; speed-up scheme; voltage 1 V; Body sensor networks; CMOS technology; Energy efficiency; Equivalent circuits; Frequency shift keying; Humans; Oscillators; Radio transmitters; Transceivers; Wireless sensor networks;
Conference_Titel :
Solid-State Circuits Conference, 2008. A-SSCC '08. IEEE Asian
Conference_Location :
Fukuoka
Print_ISBN :
978-1-4244-2604-1
Electronic_ISBN :
978-1-4244-2605-8
DOI :
10.1109/ASSCC.2008.4708797
