3.7GHz宽带CMOS LC VCO的设计  

Design of 3.7 GHz Wideband CMOS LC VCO

作　　者：王云峰[1] 叶青[1] 满家汉[1] 吴永俊[1] 陈勇[1] 叶甜春[1] 

机构地区：[1]中国科学院微电子研究所,北京100029

出　　处：《半导体技术》2008年第12期1126-1129,共4页Semiconductor Technology

摘　　要：设计了一款3.7 GHz宽带CMOS电感电容压控振荡器。采用了电容开关的技术以补偿工艺、温度和电源电压的变化,并对片上电感和射频开关进行优化设计以得到最大的Q值。电路采用和舰0.18μm CMOS混合信号制造工艺,芯片面积为0.4 mm×1 mm。测试结果显示,芯片的工作频率为3.4~4 GHz,根据输出频谱得到的相位噪声为-100 dBc/Hz@1 MHz,在1.8 V工作电压下的功耗为10 mW。测试结果表明,该VCO有较大的工作频率范围和较低的相位噪声性能,可以用于锁相环和频率合成器。A 3.7 GHz wideband CMOS LCVCO was designed. Capacitance switching technique was used for compensating the variance of rocess, temperature and the supply. Some optimization designs were made with the on-chip inductor and the RF switches to get the maximum Q-value. The VCO was fabricated in Hejian 0. 18 μm CMOS mixed signal process, the chip area was 0.4 mm x 1 ram. Measurements show that the operating frequency covers 3.4 to 4 GHz, according to the output spectrum, the phase noise is - 100dBc/Hz@ 1 MHz offset while dissipating 10 mW from 1.8 V supply. Measure results show the VCO has a large operating range of frequency and low phase noise, it can be used in PLLs and frequency synthesizers.

关 键 词：电感电容压控振荡器 宽带 片上电感 射频开关 锁相环 

分 类 号：TN838[电子电信—信息与通信工程]