TY - JOUR AU - 윤태열 DA - 2012/12 PY - 2012 UR - https://onlinelibrary.wiley.com/doi/abs/10.1002/mop.27164 UR - http://hdl.handle.net/20.500.11754/51461 AB - This article presents a K-band CMOS voltage controlled oscillator (VCO) using a wide tuning range MOSFET varactor. The proposed varactor consists of a MOSFET in which the source and drain are connected to each other through a large resistor, the body is grounded through another large resistor, and the gate and source are connected through a capacitor. The newly proposed varactor improves the tuning range of the capacitance compared to that in a conventional MOSFET varactor and a resistors-added varactor because two large resistors partially cancels the parasitic capacitances of the MOSFET in the depletion mode, and the external capacitor supplements additional capacitance in the inversion mode. The proposed varactor achieves a capacitance tuning range of +/- 64.5%. The voltage controlled oscillator using the proposed varactor features a wide tuning range characteristic of 11.7% in the K-Band and shows a good figure-of-merit of -186.5 dBc/Hz. PB - John Wiley & Sons, Ltd KW - IMOS KW - K-band KW - varactor KW - voltage controlled oscillator KW - wide tuning range TI - K-band CMOS VCO using a wide tuning range varactor IS - 12 VL - 54 DO - 10.1002/mop.27164 T2 - MICROWAVE AND OPTICAL TECHNOLOGY LETTERS ER -