IR-UWB收发芯片的研究与实现

【作者】 李斌；

【导师】 孟迎军；

【作者基本信息】 南京理工大学 ， 微电子学与固体电子学， 2009， 硕士

【摘要】 随着无线通信技术的不断发展,人们对高性能、大容量无线通信系统的需求越来越大,希望其在低成本、低功耗的情况下提供更高的数据传输速率。在这样的背景下,超宽带(UWB)技术引起了人们的重视,被视为下一代无线通信的关键技术之一。随着UWB技术研究的不断深入,实现其微型化、集成化的片上系统(SOC)也是大势所趋。与此同时,随着深亚微米技术的发展,CMOS工艺的特征频率不断提高,探索采用CMOS工艺实现UWB收发机射频前端就具有特别意义和广阔的应用前景。本文正是在此背景下,研究采用CMOS工艺实现IR-UWB收发机的射频前端。首先,在参考大量相关文献的基础上,对IR-UWB波形以及产生波形的方法做了深入分析和研究。在此基础上设计了易于CMOS全集成的具有OOK调制特性、五阶高斯脉冲输出波形的IR-UWB发射机射频前端,其输出波形功率谱直接符合FCC规范,所给出的电路具有结构简单、低功耗、占用面积小的特点。其次,通过对比、分析当前几种IR-UWB接收机结构的优缺点,采用基于能量的非相干检测接收机结构,设计了应用于UWB全频段的IR-UWB接收机射频前端。对其各组成电路进行了详细的分析和设计,包括电路结构的数学分析和性能优化。本文所有电路都采用TSMC 0.25μm CMOS工艺在Cadence环境下用Spectre RF进行了仿真,仿真结果完全满足设计要求,同时利用Cadence Virtuoso完成IR-UWB发射机和接收机射频前端的物理版图设计。更多还原

【Abstract】 With the development of wireless communication technology, People demand high-performance, high-capacity wireless communication systems with the characteristics of high data rate, low power consumption and implementation complexity. In this context, Ultra-wideband technology attracted more and more attentions as it is regarded as a promising technology for next-generation wireless communication. While the research of Ultra-wideband technology go deeping, the implement of System On Chip (SOC) is the trend of the times. Meanwhile, CMOS technology continuously improved the characteristic frequency with the development of the deep sub-micron technology. It is significant to use CMOS technology to implement IR-UWB transceiver RF front-end. So, in this paper, we explored the implementation of IR-UWB transceiver RF front-end using CMOS technologyFirst of all, we do in-depth analysis and research about pulse used in impulse radio Ultra-wideband (IR-UWB) systems and the techniques produced it after referring to a great deal of references. This paper presents a single chip IR-UWB transmitter with characteristics of OOK modulation, low power consumption, low implementation complexity and low Die area, which transmits fifth-order derivative Gaussian pulse complied with FCC regulation. Secondly, we present a Non-coherent energy detection receiver which is an attractive solution for impulse radio ultra-wideband (IR-UWB) systems due to the low implementation complexity. We also elaborated the component circuits, including the mathematical analysis and performance optimization of the Circuit structure.In this paper, all circuits are simulated in TSMC 0.25μm CMOS technology by Spectre RF simulator used in Cadence environment, and results of system simulation indicate that the performance of this circuit meets exactly with the design goals. Meanwhile, we use Cadence Virtuoso to edit IR-UWB transmitter and receiver RF front-end physical layout.更多还原