用积累型MOS变容管实现的2.4GHz0.25μm CMOS全集成压控振荡器

2.4GHz Fully Integrated VCO with Accumulation MOS Varactors in 0.25μm COMS Process

基于TSMC0．25μmCMOS工艺，将一个普通MOS管改进为工作在积累区的MOS变容管，实现了一工作于2．4GHz的全集成压控振荡器（VCO）。测试结果表明，采用积累型MOS变容管的VCO具有较大的调谐范围。在2．5V工作电压下，控制电压从0～2．2V，VCO的频率调节范围为2．210～2．484GHz，在2．4GHz时相位噪声为-105dBc／Hz@600kHz，输出功率为-7．55dBm，电流损耗为7mA。芯片面积约为0．35mm^2。

A conventional MOS transistor is modified to an accumulation-mode MOS varactor. A 2.4GHz fully integrated voltage controlled oscillator （VCO） is designed based on 0.25μm COMS Process. The measurements performed on a bare-chip, powered by a 2.5V supply, shows that the oscillation frequency can be varied in the range 2. 210 -2. 484GHz, the phase noise at offset of 600KHz from a 2.4GHz carrier is -105dBc/Hz, and output power is -7.55dBm,with 7mA current consumption.