Title :
An energy-efficient ultra-wideband transmitter with an FIR pulse-shaping filter
Author :
Liu, Wei-Ning ; Lin, Tsung-Hsien
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
An energy-efficient impulse-radio ultra-wideband (IR-UWB) transmitter (TX) operating at the sub-GHz range is reported. The IR-UWB TX is composed of a phase-locked loop, a digital modulation circuit, and an FIR-filter-based pulse generator. By utilizing a 4-tap FIR filter for pulse shaping, the output transmission spectrum is spectrally efficient. The maximum pulse repetition frequency of the proposed TX achieves 50 Mpulses/s. The TX operates from a 1-V supply voltage and consumes only 1.5 mW at 50-Mbps data rate. It achieves an energy efficiency of 30 pJ/bit. The TX is fabricated in a 0.18-μm CMOS technology and the core area is 0.25 mm2.
Keywords :
CMOS integrated circuits; FIR filters; phase locked loops; pulse generators; pulse shaping circuits; radio spectrum management; radio transmitters; ultra wideband communication; 4-tap FIR filter; CMOS technology; FIR pulse-shaping filter; FIR-filter-based pulse generator; IR-UWB TX; IR-UWB transmitter; bit rate 50 Mbit/s; data rate; digital modulation circuit; energy efficiency; energy-efficient impulse-radio ultra-wideband transmitter; output transmission spectrum; phase-locked loop; power 1.5 mW; pulse repetition frequency; size 0.18 mum; subGHz range; voltage 1 V; Bandwidth; Digital modulation; Energy efficiency; Finite impulse response filter; Phase locked loops; Pulse generation; Voltage-controlled oscillators;
Conference_Titel :
VLSI Design, Automation, and Test (VLSI-DAT), 2012 International Symposium on
Conference_Location :
Hsinchu
Print_ISBN :
978-1-4577-2080-2
DOI :
10.1109/VLSI-DAT.2012.6212651
