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回复于
极客DIY
内容:一般金属的反射率都很高,反
射频
谱很全面,所以金属镜频谱不是问题。
第九节 环境保护技术
大仙
16年5个月前
回复于
科学技术学
内容:二是高频电磁辐射:发
射频
率为100千赫至3╳105兆赫的电磁波,通常称为
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电磁辐射。,如无线电广播、电视、微波通讯、高频加热等各种
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设备的辐射,对周围近场地区造成不同程度的
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辐射污染。,目前
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电磁辐射已成为电磁污染的主要方面。
电子网站资源集锦(转自163)
mass_lynnxy
17年5个月前
回复于
电子技术
内容:照明藏金阁:XXXXXXXXXXXXXXXXXXt/------------------------------------------------------------------高频电路技术:盛盈
射频
,:XXXXXXXXXXXXXXXXXXXXXXXXXX/
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网:XXXXXXXXXXXXXXXXXXX==================================================
理解连续时间的Σ-Δ模数转换器
mass_lynnxy
16年3个月前
回复于
电子技术
内容:在奈奎斯特速率的转换器中,全速率采样将作用在系统的输入,这样输入的带宽是奈奎斯特速率的整数倍,甚至允许以
射频
的频率来采样。
猴版对万户\玉免项目航电系统的展示
warmonkey
11年6个月前
回复于
喷气推进
内容:扩频数传电台发射机1300MHz,2W发射功率数据速率100kbps,
射频
带宽10M电源 8-16V 1A 2冗余 自动切换工作温度 -40~+85C通信接口
现代物流系统技术的研究现状及发展趋势
studyboy
19年1个月前
发表于
极客DIY
内容:典型的途径是通过条码扫描或
射频
标签识别,并将得到的信息输入仓库管理系统(WMS)或制造执行系统(MES)。
收集整理一些航空器设计分析软件(抛砖引玉)
大名
14年3个月前
发表于
喷气推进
内容:hfss,总体结构建模pro/e,系统优化建模isight;(ADS – Advanced Design System,由美国Agilent公司推出的微波电路和通信系统仿真软件,是当今业界最流行的微波
射频
电路
示波器的历史,和国产困境。
立棍
7年5个月前
回复于
仪器仪表
内容:比如示波器所需的水平与垂直模块,频域与时域相交叉的TDR模块,
射频
所需要的频率计,频谱分析仪模块。
全国大学生电子设计大赛题目 电子类爱好者可以尝试
loong
13年5个月前
发表于
电子技术
内容:二、要求1、基本要求(1)设计并制作一个主站,传送一路语音信号,其发
射频
率在30MHz~40MHz之间自行选择,发射峰值功率不大于20mW(50W假负载电阻上测定),
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信号带宽及调制方式自定,主站传送信号的输入采用话筒和线路输入两种方式,不得使用现有
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识别卡或用于识别的专用芯片。
手持式无线电侦察仪KC908用户手册
kcma
4年9个月前
回复于
无线电
内容:具备
射频
测量基本知识的人,通常只需要玩上半个钟头,就能熟练使用。
无线电测向运动基本技术 - 转
mass_lynnxy
16年9个月前
回复于
无线电
内容:人们买到电视机后,如果一时买不来电视天线,常常临时找两根直径为1厘米左右的金属圆管,按图2-9的形状安装在室内或室外,其总长为当地电视发
射频
道波长的一半,从馈线处将信号引入电视机。
国家中长期科学和技术发展规划纲要(二OO六—二O二O年)
管理处
18年11个月前
发表于
极客DIY
内容:(43)传感器网络及智能信息处理 重点开发多种新型传感器及先进条码自动识别、
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标签、基于多种传感信息的智能化信息处理技术,发展低成本的传感器网络和实时信息处理系统,提供更方便、功能更强大的信息服务平台和环境
第八节 空间技术
大仙
16年5个月前
回复于
科学技术学
内容:如定向能武器,包括高能激光、粒子束、等离子束和强微波
射频
4种武器。
电路板绘制经验积累
mass_lynnxy
16年5个月前
回复于
电子技术
内容:静电放电在5 — 200MHz的频率范围内产生强烈的
射频
辐射。
谁能够把什么应用采用什么芯片罗列一个表出来?
wldshy
13年11个月前
回复于
电子技术
内容:AD公司CMOS12位缓冲乘法D/A转换器 55.00 元OPA548T TI/BB公司高压高频运放 58.00 元CC2420 Chipcon公司符合2.4GHz IEEE802.15.4标准的
射频
收发器
战斗机的隐身技术
wangyuewo56
17年0个月前
回复于
极客DIY
内容:寂静哨兵”反主动隐身雷达或者利用F-16在2003年就实现先进的AT30战术目标定位技术(实际上该技术就是利用三角定理与多普勒原理实现对包括地面、海上和空中目标的辐射源测距定位,以及对敌方与空防有关的
射频
辐射源进行快速和精确定位
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