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A 2.4-GHz sub-mW frequency source with current-reused frequency multiplier

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5 Author(s)
Taeksang Song ; Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea ; Hyoung-Seok Oh ; Jaemo Yang ; Euisik Yoon
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A fully integrated 2.4 GHz low-power frequency source including a 1.2 GHz voltage-controlled oscillator (VCO) and a current-reused frequency multiplier is fabricated in 0.18-mum CMOS process. The proposed frequency source tunes from 2.22 GHz to 2.45 GHz by changing control bias from 0 V to 0.7V, and achieves a phase noise of -115.83 dBc/Hz at 1 MHz offset from a 2.2 GHz carrier frequency while drawing only 840 muA bias current (490 muA for a 1.2 GHz VCO and 350 muA for the frequency multiplier) from the low supply voltage of 0.7 V

Published in:

IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, 2006

Date of Conference:

11-13 June 2006