Title :
A 1-V 5 GHz low phase noise LC-VCO using voltage-dividing and bias-level shifting technique
Author :
Song, Taeksang ; Yoon, Euisik
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea
Abstract :
In this paper, we present a 1 V 5.2 GHz VCO using voltage-dividing and bias-level shifting technique to prevent loaded Q-factor degradation and increase oscillation amplitude. The proposed VCO achieves a phase noise of 115.5 dBc/Hz at 1 MHz offset from a 5.2 GHz carrier frequency with 3 mA bias current from 1.0 V power supply. Tuning range is 450 MHz by changing the control bias from 0 V to 1.0 V.
Keywords :
Q-factor; circuit tuning; phase noise; voltage dividers; voltage-controlled oscillators; bias-level shifting; loaded Q-factor degradation; low phase noise LC-VCO; oscillation amplitude; tuning range; voltage dividing; Degradation; Impedance; MOSFETs; Phase noise; Power supplies; Q factor; Stacking; Tail; Voltage; Voltage-controlled oscillators;
Conference_Titel :
Silicon Monolithic Integrated Circuits in RF Systems, 2004. Digest of Papers. 2004 Topical Meeting on
Print_ISBN :
0-7803-8703-1
DOI :
10.1109/SMIC.2004.1398174
