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首页> 外文学位 >Direct conversion RF front-end implementation for ultra-wideband (UWB) and GSM/WCDMA dual-band applications in silicon-based technologies.
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Direct conversion RF front-end implementation for ultra-wideband (UWB) and GSM/WCDMA dual-band applications in silicon-based technologies.

机译：基于硅技术的超宽带（UWB）和GSM / WCDMA双频带应用的直接转换RF前端实现。

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摘要

This dissertation focuses on wideband circuit design and implementation issues up to 10GHz based on the direct conversion architecture in the CMOS and SiGe BiCMOS technologies. The dissertation consists of two parts: One, implementation of a RF front-end receiver for an ultra-wideband system and, two, implementation of a local oscillation (LO) signal for a GSM/WCDMA multiband application. For emerging ultra-wideband (UWB) applications, the key active components in the RF front-end receiver were designed and implemented in 0.18um SiGe BiCMOS process. The design of LNA, which is the critical circuit block for both systems, was analyzed in terms of noise, linearity and group delay variation over an extremely wide bandwidth. Measurements are demonstrated for an energy-thrifty UWB receiver based on an MB-OFDM system covering the full FCC-allowed UWB frequency range.; For multiband applications such as a GSM/WCDMA dual-band application, the design of wideband VCO and various frequency generation blocks are investigated as alternatives for implementation of direct conversion architecture. In order to reduce DC-offset and LO pulling phenomena that degrade performance in a typical direct conversion scheme, an innovative fractional LO signal generator was implemented in a standard CMOS process. A simple analysis is provided for the loop dynamics and operating range of the design as well as for the measured results of the factional LO signal generator.
机译：本文基于CMOS和SiGe BiCMOS技术中的直接转换架构，重点研究了高达10GHz的宽带电路设计和实现问题。论文由两部分组成：一是用于超宽带系统的射频前端接收器的实现，二是用于GSM / WCDMA多频带应用的本地振荡（LO）信号的实现。对于新兴的超宽带（UWB）应用，RF前端接收器中的关键有源组件采用0.18um SiGe BiCMOS工艺设计和实现。 LNA是这两个系统的关键电路模块，其设计是在极宽的带宽上从噪声，线性度和群时延变化方面进行分析的。演示了基于MB-OFDM系统的节电型UWB接收机的测量，该系统覆盖了FCC允许的UWB整个频率范围。对于诸如GSM / WCDMA双频应用之类的多频应用，研究了宽带VCO和各种频率生成模块的设计，作为实现直接转换架构的替代方法。为了减少在典型的直接转换方案中降低性能的DC偏移和LO拉动现象，在标准CMOS工艺中实现了创新的分数LO信号发生器。对设计的环路动态性和工作范围以及本振LO信号发生器的测量结果进行了简单分析。

著录项

  • 作者

    Park, Yunseo.;

  • 作者单位

    Georgia Institute of Technology.;

  • 授予单位 Georgia Institute of Technology.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2005
  • 页码 150 p.
  • 总页数 150
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

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