Influence of design parameters on the performance of LCVCO was analyzed.Based on the analysis,an LCVCO was implemented using UMC\'s 0.18 μm CMOS process.Test results showed that the circuit had an output frequency from 780 MHz to 930 MHz,and a phase noise of-103 dBc/1 MHz.The VCO occupied a chip area of 700 μm ×600 μm,and it consumed only 6.1 mW of power.