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  1. Fundamentals of Digital Television Transmission

  2. 1 Digital Television Transmission Standards 1 ATSC terrestrial transmission standard, vestigial sideband modulation, DVB-T transmission standard, ISDB-T transmission standard, channel allocations, antenna height and power, MPEG-2 2 Performance Objec
  3. 所属分类:VB

    • 发布日期:2009-06-28
    • 文件大小:1mb
    • 提供者:starcome
  1. Principles of Planar Near-Field Antenna Measurements

  2. Principles of Planar Near-Field Antenna Measurements 介绍天线近场测量的基础知识 Contents Preface xi 1 Introduction 1 1.1 The phenomena of antenna coupling 1 1.2 Characterisation via the measurement process 4 1.2.1 Free space radiation pattern 6 1.2.2 Polarisatio
  3. 所属分类:C

    • 发布日期:2010-05-14
    • 文件大小:5mb
    • 提供者:xugangthu
  1. CEDD: Color and Edge Directivity Descriptor.

  2. 基于内容的图像检索算法 // A Compact Descr iptor for Image Indexing and Retrieval
  3. 所属分类:C++

    • 发布日期:2012-07-11
    • 文件大小:373kb
    • 提供者:zzhm1507
  1. 耦合器tcd-20-4+

  2. 耦合器 wideband, 5-1000 MHz ?low mainline loss, 0.5 dB typ. ?high directivity, 21 dB typ. ?aqueous washable ?protected by U.S Patents 6,133,525 & 6,140,887
  3. 所属分类:硬件开发

    • 发布日期:2013-05-20
    • 文件大小:376kb
    • 提供者:peng4217
  1. Calculation of the Directivity Index for Various Types of Radiators

  2. 换能器与基阵的指向性计算,Calculation of the Directivity Index for Various Types of Radiators
  3. 所属分类:专业指导

    • 发布日期:2014-03-26
    • 文件大小:3mb
    • 提供者:u012987597
  1. R2868_TPT1008E02

  2. Quick Detection of Flame from Distance, Compact UV Sensor with High Sensitivity and Wide Directivity, Suitable for Flame Detectors and Fire Alarms. GFlame detectors for gas / oil lighters and matchesGFire alarms GCombustion monitors for burnersGInsp
  3. 所属分类:其它

    • 发布日期:2014-04-26
    • 文件大小:156kb
    • 提供者:qq_14940799
  1. Array And Phased Array Antenna Basics

  2. 相控阵天线讲的深入浅出,很有参考价值 1 Radiation 1 1.1 The Early History of Electricity and Magnetism 1 1.2 James Clerk Maxwell, The Union of Electricity and Magnetism 8 1.3 Radiation by Accelerated Charge 10 1.4 Reactive and Radiating Electromagnetic Fields 18 Refer
  3. 所属分类:电信

    • 发布日期:2014-06-29
    • 文件大小:23mb
    • 提供者:roving_zhao
  1. CEDD Color and Edge Directivity Descriptor.pdf

  2. 用于图像检索的一个颜色加纹理特征,特征长度小,计算简单,比较实用
  3. 所属分类:讲义

    • 发布日期:2015-11-26
    • 文件大小:382kb
    • 提供者:kedc6430
  1. Fundamentals of Digital Television Transmission

  2. Fundamentals of Digital Television Transmission 1 Digital Television Transmission Standards 1 ATSC terrestrial transmission standard, vestigial sideband modulation, DVB-T transmission standard, ISDB-T transmission standard, channel allocations, ante
  3. 所属分类:VB

    • 发布日期:2009-02-23
    • 文件大小:1mb
    • 提供者:osoon
  1. 商城的6*2.7小咪头质量太差了-SPU0410HR5H-PB.pdf

  2. 商城的6*2.7小咪头质量太差了-SPU0410HR5H-PB.pdfKNOWLES SPUO410HR5H-PB ACOUS 4. AcoustiC electricAl sPecifications Limits sv ymbo Condition Unit Nom。 Max Directivity Omni-directional Sensitivity S 1kHz(OdB=1V/Pa) -45 42 39 d B Output impedance Z OUT 1kHz(OdB=1V/P
  3. 所属分类:其它

    • 发布日期:2019-09-03
    • 文件大小:530kb
    • 提供者:weixin_38744375
  1. IFA 天线的 ADS 仿真及参数影响

  2. 讨论了IFA天线的ADS仿真,并且给出了其参数的具体影响。从以上辐射场的图形可以看出,其天线效率达到 而 天线只有,但二 者的场分布很接近 dBmGG3in=10. 914 Ban=0.914 015050 THE TA THETA 从增益图可以看出,天线在馈电时最高增益为 天线为 ),其 增益最高点也偏离了度,变为度。 天线的空间辐射场大致也为球形,也有变形和不对称性,更像一只在基板出被切成两半 的平果。个凹入点(即空间辐射较弱的方向)在馈电方向,这里有较大的地平面。 60 如果计算远场,也会
  3. 所属分类:硬件开发

    • 发布日期:2019-03-17
    • 文件大小:644kb
    • 提供者:zhonghuayouxiu
  1. Design and Performance Analysis of Capacitive Micromachined Ultrasonic Transducer Linear Array

  2. An ultrasonic transducer is a key component to achieve ultrasonic imaging. This paper designs a new type of Microelectromechanical Systems (MEMS) based capacitive ultrasonic transducer and a linear array based on the transducer. Through directivity a
  3. 所属分类:其它

    • 发布日期:2021-02-21
    • 文件大小:864kb
    • 提供者:weixin_38543749