Title :
A 0.32nJ/bit noncoherent UWB impulse Radio transceiver with baseband synchronization and a fully digital transmitter
Author :
Mehra, Anu ; Sturm, Martin ; Hedin, Dan ; Harjani, Ramesh
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Minnesota, Minneapolis, MN, USA
Abstract :
This paper presents a low-power noncoherent ultrawideband (UWB) impulse-radio (IR) transceiver operating at 5GHz in 0.13-μm CMOS. The super-regenerative amplifier (SRA) based energy-detection receiver utilizes early/late detection for a two-step baseband synchronization algorithm. A fully-digital transmitter generates a shaped output pulse of 1GHz 3-dB bandwidth. DLLs provide a PVTtolerant time-step resolution of 1ns over the entire symbol period and regulate the pulse generator center frequency. Measured results show a receiver efficiency of 0.32nJ/bit at 20.8Mb/s and operation with inputs as low as -70dBm. The transmitter outputs -31dBm (0.88pJ/pulse at 1Mpulse/s) with a dynamic (energy) efficiency of 16pJ/pulse.
Keywords :
CMOS integrated circuits; amplifiers; low-power electronics; radio transceivers; ultra wideband communication; CMOS; DLL; IR transceiver; PVT-tolerant time-step resolution; SRA based energy-detection receiver; UWB impulse-radio transceiver; bandwidth 1 GHz; baseband synchronization algorithm; bit rate 20.8 Mbit/s; energy efficiency; frequency 5 GHz; fully digital transmitter; low-power noncoherent ultrawideband transceiver; noncoherent UWB impulse radio transceiver; pulse generator center frequency; size 0.13 micron; super-regenerative amplifier; Pulse generation; Radio transmitters; Receivers; Synchronization; Transceivers; Hearing aid; Impulse-radio; SRA; Super-regenerative amplifier; UWB; UWB-IR; low-power; synchronization; transceiver;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium (RFIC), 2013 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4673-6059-3
DOI :
10.1109/RFIC.2013.6569510
