TY - JOUR
T1 - A 47 GHz LC cross-coupled VCO employing high-Q island-gate varactor for phase noise reduction
AU - Kim, Namhyung
AU - Oh, Yongho
AU - Rieh, Jae Sung
N1 - Funding Information:
Manuscript received July 18, 2009; revised November 16, 2009. First published January 19, 2010; current version published February 10, 2010. This work was supported in part by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2009-0079994) and a Korea University Grant.
PY - 2010/2
Y1 - 2010/2
N2 - A 47 GHz LC cross-coupled voltage controlled oscillator (VCO) employing the high-Q island-gate varactor (IGV) based on a 0.13 μm RFCMOS technology is reported in this work. To verify the improvement in the phase noise, two otherwise identical VCOs, each with an IGV and a conventional multi-finger varactor, were fabricated and the phase noise performance was compared. With VDD of 1.2 V and core power consumption of 3.86 mW, the VCOs with the IGV and the multi-finger varactor have a phase noise of -95.4 dBc/Hz and -91.4 dBc/Hz respectively, at 1 MHz offset, verifying the phase noise reduction with the introduction of the high-Q IGV. The VCO with IGV exhibited an output power of around -15 dBm, leading to a FoM of -182.9 dBc/Hz and a tuning range of 3.35% (45.69 to 47.22 GHz).
AB - A 47 GHz LC cross-coupled voltage controlled oscillator (VCO) employing the high-Q island-gate varactor (IGV) based on a 0.13 μm RFCMOS technology is reported in this work. To verify the improvement in the phase noise, two otherwise identical VCOs, each with an IGV and a conventional multi-finger varactor, were fabricated and the phase noise performance was compared. With VDD of 1.2 V and core power consumption of 3.86 mW, the VCOs with the IGV and the multi-finger varactor have a phase noise of -95.4 dBc/Hz and -91.4 dBc/Hz respectively, at 1 MHz offset, verifying the phase noise reduction with the introduction of the high-Q IGV. The VCO with IGV exhibited an output power of around -15 dBm, leading to a FoM of -182.9 dBc/Hz and a tuning range of 3.35% (45.69 to 47.22 GHz).
KW - Phase noise
KW - Varactor
KW - Voltage controlled oscillator (VCO)
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U2 - 10.1109/LMWC.2009.2038522
DO - 10.1109/LMWC.2009.2038522
M3 - Article
AN - SCOPUS:76749095059
VL - 20
SP - 94
EP - 96
JO - IEEE Microwave and Wireless Components Letters
JF - IEEE Microwave and Wireless Components Letters
SN - 1531-1309
IS - 2
M1 - 5392992
ER -