Title :
10 GHz quadrature-phase voltage controlled oscillator and prescaler
Author :
Chen, Wei-Zen ; Kuo, Chien-Liang ; Liu, Chia-Chun
Author_Institution :
Dept. of Electron. Eng., Nat. Chiao-Tung Univ., Hsinchu, Taiwan
Abstract :
In this paper, a 10 GHz quadrature phase LC-VCO with a novel ring-array based injection-locked prescaler is presented. Fabricated in a 0.18 /spl mu/m digital CMOS process, output frequency of VCO ranges from 10.03-9.35 GHz, and the prescaler performs divide-by 8 operation with locking range of 1 GHz. The measured phase noise from a 9.395 GHz carrier is -120 dBc/Hz at 5 MHz offset. Operating under a single 1.8 V supply, the VCO and prescaler respectively consume 21.6 mW and 12.6 mW only. Chip size are 1682.8 /spl mu/m /spl times/ 647.8 /spl mu/m.
Keywords :
CMOS digital integrated circuits; phase noise; prescalers; voltage-controlled oscillators; 0.18 microns; 1 GHz; 1.8 V; 10 GHz; 12.6 mW; 21.6 mW; 5 MHz; 9.35 to 10.03 GHz; LC-VCO; digital CMOS process; divide-by 8 operation; phase noise; quadrature-phase voltage controlled oscillator; ring-array based injection-locked prescaler; Clocks; Energy consumption; Frequency conversion; Injection-locked oscillators; Phase noise; Transceivers; Tuning; Varactors; Voltage-controlled oscillators; Wireless LAN;
Conference_Titel :
Solid-State Circuits Conference, 2003. ESSCIRC '03. Proceedings of the 29th European
Conference_Location :
Estoril, Portugal
Print_ISBN :
0-7803-7995-0
DOI :
10.1109/ESSCIRC.2003.1257147
