| 一种2.4GHz正交输出频率综合器 |
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| 引用本文： | 衣晓峰,方晗,杨雨佳,洪志良.一种2.4GHz正交输出频率综合器[J].半导体学报,2005,26(10). |
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| 作者姓名： | 衣晓峰 方晗 杨雨佳 洪志良 |
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| 作者单位： | 复旦大学专用集成电路与系统国家重点实验室,上海,200433 |
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| 摘 要： | 介绍了一种用于bluetooth的基于0.35μm CMOS工艺的2.4GHz正交输出频率综合器的设计和实现.采用差分控制正交耦合压控振荡器实现I/Q信号的产生.为了降低应用成本,利用一个二阶环路滤波器以及一个单位增益跨导放大器来代替三阶环路滤波器.频率综合器的相位噪声为-106.15dBc/Hz@1MHz,带内相位噪声小于-70dBc/Hz,3.3V电源下频率综合器的功耗为13.5mA,芯片面积为1.3mm×0.8mm.
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| 关 键 词： | 频率综合器 锁相环 正交压控振荡器 相位噪声 蓝牙 |
A 2. 4GHz Quadrature Output Frequency Synthesizer |
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| Yi Xiaofeng,Fang Han,Yang Yujia,Hong Zhiliang.A 2. 4GHz Quadrature Output Frequency Synthesizer[J].Chinese Journal of Semiconductors,2005,26(10). |
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| Authors: | Yi Xiaofeng Fang Han Yang Yujia Hong Zhiliang |
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| Abstract: | A design and implementation for a 2.4GHz quadrature output frequency synthesizer intended for bluetooth in 0.35μm CMOS technology are presented.A differentially controlled quadrature voltage-controlled oscillator(QVCO) is employed to generate quadrature (I/Q) signals.A second-order loop filter,with a unit gain transconductance amplifier having the performance of a third-order loop filter,is exploited for low cost.The measured spot phase noise is -106.15dBc/Hz@1MHz.Close-in phase noise is less than -70dBc/Hz.The synthesizer consumes 13.5mA under a 3.3V voltage supply.The core size is 1.3mm×0.8mm. |
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| Keywords: | frequency synthesizer phase locked loop quadrature VCO phase noise bluetooth |
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