【摘 要】
：
This article presents an L1 band low noise integrated global positioning system(GPS)receiver chip using 0.18 μm CMOS technology.Dual-conversion with a low-IF a
【机 构】
：
Institute of Radio Frequency and Electronic Integrated Circuits
论文部分内容阅读
This article presents an L1 band low noise integrated global positioning system(GPS)receiver chip using 0.18 μm CMOS technology.Dual-conversion with a low-IF architecture was used for this GPS receiver.The receiver is composed of low noise amplifier(LNA),down-conversion mixers,band pass filter,received signal strength indicator,variable gain amplifier,programmable gain amplifier,ADC,PLL frequency synthesizer and other key blocks.The receiver achieves a maximum gain of 105 dB and noise figure less than 6 dB.The variable gain amplifier(VGA)and programmable gain amplifier(PGA)provide gain control dynamic range over 50 dB.The receiver consumes less than 160 mW from a 1.8 V supply while occupying a 2.9 mm2chip area including the ESD I/O pads.
其他文献
系统地介绍了三种预测油气田产量的数学模型,即逻辑斯蒂模型、胡-陈-张模型和Wang-Li模型.从数学模型的建立、模型的特点及适用范围对这三个模型进行了分析,可为油气田的实际
通过工程实例,介绍了在跨海大桥桩基施工过程中,根据桩基工程施工要点,严格控制搭设施工平台、钻孔定位与护筒埋设、嵌岩深度、泥桨性能、清孔、混凝土灌注等施工质量,确保大
结合坝陵河大桥东锚碇超大体积混凝土施工过程中的温控技术,浅析大体积混凝土的温度控制。根据数值模拟分析,制定详尽地施工温控方案。采用掺加高效缓凝减水剂与粉煤灰双掺技
本文主要针对当前正在兴起的网络媒介的特点 ,从理论与实践角度阐述了网络档案编研的优质 ,探讨了网络对档案编研方式的影响以及编研信息上网的迫切性
This paper is mainly
通过田间原状土和回填土渗透比较试验,揭示了大孔隙对水及溶质在土壤中运移的影响。通过回填土和原状土中含水率实验结果比较分析,指出回填土和原状土含水率的变化呈现不同分
In this article,results obtained from wideband multiple-input multiple-output channel measurements at 4.9 GHz are presented.Measurements were performed in an in
在对旧的办刊管理体制、机制的弊端剖析的基础上,就科技期刊改革的目的及必要性作了探讨,认为科技期刊出版者没有自主权是制约其发展的核心问题。改革的核心问题是出版者自主
A new combined steel lead damper(NCSLD)was presented.Construction and working mechanism of NCSLD were introduced,pseudo-static tests of the small size dampers w