Title :
A low-power fully integrated Gaussian-MSK modulator based on the sigma-delta fractional-N frequency synthesis
Author :
Zarei, Hossein ; Shoaei, Onzid ; Fakhraie, M.
Author_Institution :
Tehran Univ., Iran
Abstract :
A fully integrated GMSK modulator in DRRS band is presented All components of the transmitter except the power amplifier, including the loop filter and the oscillator are on-chip. Transistor and system level simulations demonstrate that the modulator meets the performance requirements of the DRRS standard. The circuit power consumption of the modulator at 1.4 GHz is 37 mW with a single 3 V power supply, in a 0.6 μm digital CMOS technology. Low power consumption of the modulator is due to the low-power frequency divider and low-power low-phase noise ring oscillator
Keywords :
digital radio; frequency synthesizers; low-power electronics; minimum shift keying; modulators; 0.6 micron; 1.4 GHz; 3 V; 37 mW; DRRS band; Gaussian-MSK modulator; circuit power consumption; digital radio relay system; frequency divider; loop filter; ring oscillator; sigma-delta fractional-N frequency synthesis; system level simulations; CMOS technology; Circuit simulation; Digital modulation; Energy consumption; Filters; Gaussian processes; Oscillators; Power amplifiers; Power supplies; Transmitters;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.922180
