A Ku-band frequency synthesizer in 0.18-mu m CMOS technology

作者：Peng Yu Hsun^*; Lu Liang Hung

来源：IEEE Microwave and Wireless Components Letters, 2007, 17(4): 256-258.

DOI：10.1109/LMWC.2007.892953

• differential Colpitts voltage controlled oscillator (VCO)
• frequency dividers
• integer-N frequency synthesizers
• phase-locked loops (PLLs)
• phase noise
• prescalers

This letter presents a fully integrated frequency synthesizer implemented in a 0.18-mu m foundry CMOS process. By employing a modified differential Colpitts voltage controlled oscillator to improve the tuning range and the phase noise, the integer-N frequency synthesizer demonstrates an output frequency from 14.8 to 16.9 GHz, allowing wideband operations at Ku-band. Operated at an output frequency of 15 GHz, the proposed synthesizer exhibits a reference sideband power of -50 dBc and a phase noise of - 104.5 dBc/Hz at 1-MHz offset. The fabricated circuit consumes a dc power of 70 mW from a 2-V supply voltage.

• 出版日期2007-4
• 单位中国科学院电工研究所