Title :
A 37 mW fully integrated GMSK modulator for DRRS standard in 0.6-μm digital CMOS process
Author :
Zarei, Hossein ; Shoaei, Omid ; Fakhraie, S. Mehdi
Author_Institution :
Dept. of Electr. & Comput. Eng., Tehran Univ., Iran
fDate :
7/1/2002 12:00:00 AM
Abstract :
A prototype Gaussian minimum key shifting (GMSK) modulator for digital radio relay systems (DRRSs) standard without any external component has been designed and simulated in the 1.4 GHz frequency band in a 0.6 μm CMOS process. The modulator including a compensation filter allows digital frequency modulation at 1.6 Mb/s. Using a low-power frequency divider and a low-power low-phase noise oscillator, the power consumption of the modulator is minimized. Transistor and system level simulations demonstrate that the modulator meets the performance requirements of the DRRS standard. Circuit simulation with a 0.6 μm CMOS technology shows that the power consumption of the modulator is 37 mW from a 3 V power supply.
Keywords :
CMOS integrated circuits; circuit simulation; digital radio; frequency synthesizers; integrated circuit design; low-power electronics; minimum shift keying; mixed analogue-digital integrated circuits; modulators; phase locked loops; sigma-delta modulation; 0.6 micron; 0.6-μm digital CMOS process; 1.4 GHz; 1.6 Mbit/s; 3 V; 37 mW; DRRS standard; Gaussian minimum key shifting modulator; VCO circuit; circuit simulation; compensation filter; digital frequency modulation; digital radio relay systems; frequency synthesizers; fully integrated GMSK modulator; low-power frequency divider; low-power low-phase noise oscillator; phase-locked loop; power consumption minimization; sigma-delta modulation; CMOS process; CMOS technology; Circuit simulation; Digital communication; Digital filters; Digital modulation; Digital relays; Energy consumption; Frequency; Virtual prototyping;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
DOI :
10.1109/TCSII.2002.804054
