一种宽频压控振荡器及高速双模预分频器的设计与实现  

Design and Implementation of an Wideband VCO with an High-speed Dual-mode Prescaler

作　　者：兰晓明[1] 颜峻[1] 马何平[1] 石寅[1] 

机构地区：[1]中国科学院半导体研究所,北京100083

出　　处：《微电子学与计算机》2010年第2期45-48,54,共5页Microelectronics & Computer

摘　　要：针对射频无线收发机的需求,利用开关电容阵列和多个VCO核的结构设计了一个分段线性超宽频压控振荡器(VCO).采用全电流模逻辑(CML)结构的双模预分频器能满足振荡器最高频率输出的要求.基于IBM0.35SiGe BiCMOS工艺的流片测试结果表明,电源电压为2.8V时,该压控振荡器的频率能够覆盖2.75～5.73GHz的频段,调频灵敏度约为100MHz/V,在偏离中心频率1MHz处,单边带相位噪声最佳值达到了-120.32dBc/Hz,预分频器后仿最高工作频率达9.6GHz,两部分核心总工作电流为10mA.Aimed at the requirements of RF wireless transceiver, a wideband piecewise linear VOO is designed based on the combination of switching-capacitance and multi-VCO cores. The dual-mode prescaler utilizing full current mode logic is able to operate at the highest VOD frequency. Implemented in the IBM 0.35SiGe BiCMOS process, the VOD frequency ranges between 2.75 - 5.73GHz with an average tuning gain of 100MHz/V. The best measured SSB phase noise is 120.32dBc/Hz at 1MHz offset from the carrier, the prescaler post simulated frequency is up to 9.6GHz. The two parts draws 10mA current from a 2.8V supply.

关 键 词：压控振荡器 预分频器 宽频 电流模逻辑SiGe BICMOS工艺 

分 类 号：TN433[电子电信—微电子学与固体电子学]