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首页> 外文会议>Wireless Sensing, Local Positioning, and RFID, 2009. IMWS 2009 >Synthesizer concepts for FMCW based locatable wireless sensor nodes
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Synthesizer concepts for FMCW based locatable wireless sensor nodes

机译：基于FMCW的可定位无线传感器节点的合成器概念

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摘要

Local positioning systems significantly enhance the value of wireless sensor networks (WSN). This paper first motivates the use of WSN with exemplary application scenarios. Afterwards it shortly addresses the basics of frequency modulated continuous wave (FMCW) systems. Several common synthesizer concepts for FMCW radars are shown. The paper focuses on a novel integrated synthesizer for localization using frequency modulated continuous wave (FMCW) radar. The synthesizer is based on a fractional-n phase-locked loop (PLL) architecture. All components of the PLL are carefully designed with respect to their performance and power consumption. The complete synthesizer was manufactured in a 0.18 µm SiGe BiCMOS process from IBM, and it draws only 39mA from the supply. It achieves a phase noise better than −113 dBc/Hz and has a silicon area of 1.15mm2. Due to its high integration level and its optimized design, the synthesizer achieves low power consumption and low phase noise that makes it suitable for precise localization in mobile sensor nodes. Localization measurements in indoor environments with multipath propagation showed mean distance errors about 13 cm.
机译：本地定位系统极大地提高了无线传感器网络（WSN）的价值。本文首先在示例应用场景中激发WSN的使用。随后，它简要介绍了调频连续波（FMCW）系统的基础知识。显示了FMCW雷达的几种常见合成器概念。本文着重介绍了一种新颖的集成合成器，用于使用调频连续波（FMCW）雷达进行定位。该合成器基于分数n锁相环（PLL）架构。 PLL的所有组件均针对其性能和功耗进行了精心设计。完整的合成器是使用IBM的0.18 µm SiGe BiCMOS工艺制造的，仅消耗39mA的电流。它的相位噪声优于-113 dBc / Hz，硅面积为1.15mm 2 。凭借其高集成度和优化设计，该合成器实现了低功耗和低相位噪声，使其适合在移动传感器节点中进行精确定位。在具有多径传播的室内环境中进行的定位测量显示，平均距离误差约为13 cm。

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