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A low-power 2/5.8-GHz'CMOS LC-VCO for multi-band wireless communication applications

Author:
Yeh, Mei-Ling  Liou, Wan-Rone  Chen, T. H.  Lin, Y. C.  Ho, Jyh-Jier  


Journal:
2006 INTERNATIONAL CONFERENCE ON COMMUNICATIONS, CIRCUITS AND SYSTEMS PROCEEDINGS, VOLS 1-4: VOL 1: SIGNAL PROCESSING


Abstract(summary):

A fully integrated dual-band LC voltage control oscillator designed in a 0.18-um CMOS technology for 5.8-GHz/2.0-GHz wireless communication applications Is described. The frequency band switching is accomplished with switched-inductor technique. The dual-band oscillator can be operated in 5.38 similar to 6.23 GHz and 1.78 similar to 2.07 GHz with 15% frequency tuning range. Two different inductors are used for the frequency band switching. Frequency tuning is implemented by varying the capacitance of a MOS varactor. The measured phase noise is -109 dBc/Hz @1 MHz and -112 dBc/Hz @1 MHz for frequency at 5.8 GHz and 2 GHz, respectively. This oscillator Is fabricated in UMC's 0.18-um one-poly-six-metal 1.8 V process. The power dissipation of this dual-band VCO is 11.7 and 9.3 mW for oscillation frequency of 2 GHz and 5.8 GHz, respectively.


Page:
825---828


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