Title :
A 0.65-to-1.4nJ/burst 3-to-10GHz UWB Digital TX in 90nm CMOS for IEEE 802.15.4a
Author :
Ryckaert, Julien ; Van der Plas, G. ; De Heyn, V. ; Desset, Claude ; Vanwijnsberghe, Geert ; Van Poucke, B. ; Craninck, Jan
Author_Institution :
IMEC, Leuven
Abstract :
A digital UWB TX that supports the IEEE 802.15.4a standard is presented. A digitally controlled oscillator produces the RF carrier for all bands between 3 and 10GHz. It is embedded in a phase-aligned frequency-locked loop that starts up in 2ns and thus exploits the signal duty-cycle that can be as low as 3%. A digital modulator shapes the BPSK symbols at the required 500MHz chip rate. The energy requirements varies from 0.65nJ at 3.5GHz up to 1.4nJ/burst at 10GHz in 90nm 1V digital CMOS
Keywords :
CMOS digital integrated circuits; IEEE standards; frequency locked loops; modulators; phase shift keying; radio transmitters; ultra wideband technology; 0.65 nJ; 1 V; 2 ns; 3 to 10 GHz; 500 MHz; 90 nm; BPSK symbols; CMOS integrated circuit; IEEE 802.15.4a standard; RF carrier; UWB digital transmitter; digital CMOS; digital modulator; digitally controlled oscillator; phase-aligned frequency-locked loop; signal duty-cycle; Binary phase shift keying; Clocks; Degradation; Digital control; Jitter; Modulation coding; Oscillators; Physical layer; Radio frequency; Tuning;
Conference_Titel :
Solid-State Circuits Conference, 2007. ISSCC 2007. Digest of Technical Papers. IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
1-4244-0853-9
Electronic_ISBN :
0193-6530
DOI :
10.1109/ISSCC.2007.373617
