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无线通信 UHF读写器设计中的FM0解码技术

   针对UHF读写器设计中,在符合EPC Gen2标准的情况下,对标签返回的高速数据进行正确解码以达到正确读取标签的要求,提出了一种新的在ARM平台下采用边沿捕获统计定时器数判断数据的方法,并对FM0编码进行解码。与传统的使用定时器定时采样高低电平的FM0解码方法相比,该解码方法可以减少定时器定时误差累积的影 ...
https://www.eeworm.com/dl/510/36490.html
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无线通信 基于塑料光纤的高压隔离通信接口设计

 通过比较各种隔离数字通信的特点和应用范围,指出塑料光纤在隔离数字通信中的优势。使用已经标准化的TOSLINK接口,有利于节省硬件开发成本和简化设计难度。给出了塑料光纤的硬件驱动电路,说明设计过程中的注意事项,对光收发模块的电压特性和频率特性进行全面试验,并给出SPI口使用塑料光纤隔离通信的典型应用电路图 ...
https://www.eeworm.com/dl/510/36492.html
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无线通信 快速跳频通信系统同步技术研究

同步技术是跳频通信系统的关键技术之一,尤其是在快速跳频通信系统中,常规跳频通信通过同步字头携带相关码的方法来实现同步,但对于快跳频来说,由于是一跳或者多跳传输一个调制符号,难以携带相关码。对此引入双跳频图案方法,提出了一种适用于快速跳频通信系统的同步方案。采用短码携带同步信息,克服了快速跳频难以携带 ...
https://www.eeworm.com/dl/510/36495.html
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无线通信 错误观念妨碍电量计在无线手机中的应用

Abstract: Most hand-held products lack accurate battery-charge monitors ("fuel gauges") because of the misconception that an accurate fuel gauge is difficult to achieve. This article debunks the myths and discusses how to accurately monitor charge at all temperatures, charge and discharge rates, and ...
https://www.eeworm.com/dl/510/36561.html
下载: 122
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无线通信 错误观念妨碍电量计在无线手机中的应用

Abstract: Most hand-held products lack accurate battery-charge monitors ("fuel gauges") because of the misconception that an accurate fuel gauge is difficult to achieve. This article debunks the myths and discusses how to accurately monitor charge at all temperatures, charge and discharge rates, a ...
https://www.eeworm.com/dl/510/36566.html
下载: 89
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ARM 基于ARM的远程无线视频监控终端设计

提出了一种以ARM微处理器为控制核心的远程无线视频监控终端的设计方案,其监控终端的硬件设计包括视频采集处理、中央管理控制、无线传输3个模块。并给出了监控终端的软件开发平台和开发模式的系统启动代码、嵌入式Linux系统移植以及驱动程序和应用程序。测试结果表明,该监控终端设计方案合理、有效,基本满足监控需求。 ...
https://www.eeworm.com/dl/553/36620.html
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可编程逻辑 PCB Design Considerations and Guidelines for 0.4mm and 0.5mm WLPs

Abstract: Using a wafer-level package (WLP) can reduce the overall size and cost of your solution.However when using a WLP IC, the printed circuit board (PCB) layout can become more complex and, ifnot carefully planned, result in an unreliable design. This article presents some PCB designconsidera ...
https://www.eeworm.com/dl/kbcluoji/38883.html
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可编程逻辑 MAX20021,MAX20022示例PCB布局指南

Abstract: This application note explains how to layout the MAX20021/MAX20022 automotive quad powermanagementICs (PMICs) to maximize performance and minimize emissions. Example images of a fourlayerlayout are provided.
https://www.eeworm.com/dl/kbcluoji/38886.html
下载: 174
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可编程逻辑 Create a 1-Wire Master with Xilinx PicoBlaze

Abstract: Designers who must interface 1-Wire temperature sensors with Xilinx field-programmable gate arrays(FPGAs) can use this reference design to drive a DS28EA00 1-Wire slave device. The downloadable softwarementioned in this document can also be used as a starting point to connect other 1-Wir ...
https://www.eeworm.com/dl/kbcluoji/39318.html
下载: 27
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可编程逻辑 如何保护印刷电路板(PCB)

Abstract: Large steel buildings, automobiles, mountains, even people survive real atmospheric lightning.
https://www.eeworm.com/dl/kbcluoji/39442.html
下载: 93
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