Title :
A 19pJ/pulse UWB transmitter with dual capacitively-coupled digital power amplifiers
Author :
Mercier, Patrick P. ; Daly, Denis C. ; Chandrakasan, Anantha P.
Author_Institution :
Massachusetts Inst. of Technol., Cambridge, MA
fDate :
June 17 2008-April 17 2008
Abstract :
A fully integrated pulsed-UWB transmitter that communicates in the 3-to-5 GHz 802.15.4a bands is presented. Enabled by relaxed frequency tolerances of non-coherent communication, the all-digital architecture generates FCC-compliant UWB pulse-bursts using discrete four-level pulse shaping. BPSK-modulation is achieved without the use of a balun through dual capacitively-coupled digital power amplifiers. The transmitter consumes zero static bias power and achieves an energy efficiency of 113-to-19 pJ/pulse at data rates from 100 kbps-to-15.6 Mbps.
Keywords :
phase shift keying; power amplifiers; radio transmitters; ultra wideband communication; BPSK-modulation; discrete four-level pulse shaping; dual capacitively-coupled digital power amplifier; frequency 3 GHz to 5 GHz; pulsed-UWB transmitter; Binary phase shift keying; Energy efficiency; Frequency; Impedance matching; Power amplifiers; Pulse amplifiers; Pulse generation; Pulse modulation; Pulse shaping methods; Radio transmitters; UWB; Ultra-wideband; non-coherent; power amplifier; pulse shaping; transmitter;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium, 2008. RFIC 2008. IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-1808-4
Electronic_ISBN :
1529-2517
DOI :
10.1109/RFIC.2008.4561383
