A CMOS VCO with 2GHz Tuning Range for Wideband Applications

—A wideband voltage-controlled oscillator (VCO) with a frequency range from 3GHz to 5GHz is presented. The VCO has two control inputs, one for band switching and one for continuous control of the output frequency. The VCO with a 4.4 tenability PMOS varactor was designed and fabricated in a TSMC 0.18- u m CMOS process. The phase noises at 1MHz offset are -124 dBc/Hz and -92 dBc/Hz for the oscillation frequency of 2.95 GHz and 5.03 GHz, respectively. Simulated data shows that the designed VCO is suitable for ultra-wideband system applications.

• Type: Conference
• Year: 2007
• Where: IMECS
• Authors: Shih-Yi Huang, Zhi-Ming Lin
• Keywords: Frequency Range, IMECS 2007, Tenability Pmos Varactor, Theoretical Computer Science, Wideband Voltage-controlled Oscillator