Title :
14-mW 5-GHz frequency synthesizer with CMOS logic divider and phase-switching dual-modulus prescaler
Author :
Kim, Myeungsu ; Park, Sang-Gyu ; Kwon, Yongil ; Lim, Joonhyung ; Sang-Gyu Park ; Kim, Sung-Han
Author_Institution :
Central R&D Lab., Samsung Electro-Mech., Gyunggi-Do
Abstract :
A 5-GHz frequency synthesizer for Zigbee (IEEE 802.15.4) was implemented. It consumes only 14mW adopting CMOS logic divider and phase-switching dual-modulus. A 2nd loop filter is internally embodied to reduce external components. The phase switching is made between the 45deg spaced output phases to reduce the power consumption and improve the robustness of circuit. This synthesizer was fabricated in 0.18-mum technology; it consumes 8mA at 1.8V and offers 100kHz-loop bandwidth and -103dBc/Hz at an offset of 1MHz. the lock time is 30mus. The PLL output tuning range is 11% from 2.37GHz to 2.66GHz
Keywords :
CMOS logic circuits; MMIC; dividing circuits; frequency synthesizers; phase locked loops; 0.18 micron; 1.8 V; 100 kHz; 14 mW; 2.37 to 2.66 GHz; 30 mus; 5 GHz; 8 mA; CMOS logic divider; IEEE 802.15.4; Zigbee; frequency divider; frequency synthesizer; loop filter; phase locked loop; phase-switching dual-modulus prescaler; Bandwidth; CMOS logic circuits; CMOS technology; Energy consumption; Filters; Frequency synthesizers; Robustness; Space technology; Switching circuits; ZigBee;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2006 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9572-7
DOI :
10.1109/RFIC.2006.1651188
