Technical Program

Paper Detail

Paper:COMM-P2.4
Session:Communication Circuits Design I
Time:Monday, May 24, 11:15 - 12:45
Presentation: Poster
Topic: Circuits and Systems for Communications: RF & High-Frequency Circuits for Communications
Title: HIGH-SPEED AND WIDE-TUNING-RANGE LC FREQUENCY DIVIDERS
Authors: Ken Yamamoto; University of Tokyo 
 Takayasu Norimatsu; University of Tokyo 
 Minoru Fujishima; University of Tokyo 
Abstract: Wide tuning-range frequency dividers based on an LC resonator are proposed for high-speed transceivers. The proposed circuit is fabricated using a two-metal and 0.5-µm-gate CMOS process and realizes the minimum and maximum frequencies of 7.74 GHz and 8.16 GHz, respectively, with the power consumption of 2.2 mW at the supply voltage of 0.9 V. To enlarge a tuning range without increasing power consumption, the LC divider with MOS varactors is also fabricated using the same process, where the minimum and maximum frequencies are 1.49 GHz and 1.97 GHz, respectively, with the power consumption of 0.87 mW at the supply voltage of 1.2 V. Finally, the application to a phase-locked loop of the proposed circuit is described.
 
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