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引用次数: 2
摘要
在本文中，我们讨论了用于双模直接转换接收机(WCDMA/GSM)的压控振荡器和分频器的设计，强调了在标准的0.25/spl μ m CMOS数字工艺中实现宽调谐范围同时实现低相位噪声和精确正交信号生成的拓扑结构。所设计的VCO具有1.06 GHz的调谐范围，其中4 GHz的中心频率从2.25 V的电源消耗16.8 mW。分频器消耗1ma。讨论了压控振荡器拓扑的优缺点，并对信号源相位噪声分频器的设计进行了研究。
WCDMA/GSM dual mode signal generation for direct conversion receiver
In this paper, we discuss the design of a VCO and the frequency divider for a dual mode direct conversion receiver (WCDMA/GSM), emphasizing the topology which enables a wide tuning range while achieving low phase noise, and accurate quadrature signal generation in a standard digital 0.25/spl mu/m CMOS process. The designed VCO has a 1.06 GHz tuning range with a 4 GHz of center frequency consuming 16.8 mW from 2.25 V of the power supply. The frequency divider consumes 1 mA. Pros and cons of VCO topology are discussed, and the design of the frequency divider on the phase noise of a signal source is investigated.
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