多模多标准收发机频综中宽带压控振荡器的设计

发布时间：2018-04-24 15:07

  本文选题：多模多标准 + 频率综合器　； 参考：《东南大学》2017年硕士论文

【摘要】：无线通信领域在过去的数十年中实现了迅速发展,已经成为了当今社会中不可缺少的一部分。射频电路集成度的不断增加,性能的不断增强,功耗的不断降低有力地推动了无线通信领域的发展。为了进一步提高射频芯片的集成度,设计一款支持多模式多标准的射频收发机已经成为了当今的研究热点。频率综合器作为收发机中的关键模块,为收发机提供了本振信号。压控振荡器(Voltage-Controlled Oscillator,VCO)作为频率综合器中的核心模块,决定了频率综合器的频率范围以及相位噪声等关键性能。本文介绍了 VCO的理论基础,并采用不同模型对VCO的相位噪声进行了分析。在对不同的宽带VCO实现方案进行比较之后,本文基于TSMC 0.18μm CMOS工艺设计了一款应用于多模多标准收发机频率综合器中的宽带压控振荡器。本文使用ADS Momentum设计了由三模电感组成的六阶谐振腔作为宽带压控振荡器的核心单元,在此基础上,完成了三模宽带CMOS压控振荡器的设计。设计的三模压控振荡器负阻部分采用电流复用结构,降低了功耗。本次设计中使用了可变电容和5比特开关电容阵列进一步拓展了频率范围。后仿真结果表明设计的宽带压控振荡器频率覆盖1.36-5.92GHz,在1MHz频偏处的相位噪声小于-110.2dBc/Hz,功耗小于12mA,版图面积为1688μm×1191μm,各项指标均满足设计指标要求。
[Abstract]:The field of wireless communication has developed rapidly in the past decades and has become an indispensable part of today's society. With the increasing integration of RF circuits, the continuous enhancement of performance and the decrease of power consumption, the development of wireless communication field has been pushed forward. In order to further improve the integration of RF chips, the design of a multi-mode multi-standard RF transceiver has become a research hotspot. As a key module of transceiver, frequency synthesizer provides local oscillator signal for transceiver. As the core module of frequency synthesizer, Voltage-Controlled Oscillator (VCO) determines the frequency range and phase noise of frequency synthesizer. In this paper, the theoretical basis of VCO is introduced, and the phase noise of VCO is analyzed by using different models. After comparing different implementation schemes of broadband VCO, a wideband voltage-controlled oscillator is designed based on TSMC 0.18 渭 m CMOS process for multi-mode multi-standard transceiver frequency synthesizer. In this paper, a six-order resonator composed of a three-mode inductor is designed as the core unit of a wideband voltage-controlled oscillator using ADS Momentum. On this basis, the design of a three-mode wideband CMOS voltage-controlled oscillator is completed. The negative resistance part of the three-mode voltage controlled oscillator adopts current multiplexing structure, which reduces power consumption. In this design, variable capacitance and 5-bit switched capacitor array are used to further expand the frequency range. The simulation results show that the frequency coverage of the VCO is 1.36-5.92 GHz, the phase noise at the 1MHz frequency offset is less than -110.2dBc / Hz, the power consumption is less than 12mAand the layout area is 1688 渭 m 脳 1191 渭 m.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN752
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本文编号：1797143