<nav id="22c8c"></nav>
  • <tr id="22c8c"><blockquote id="22c8c"></blockquote></tr>
    <sup id="22c8c"><delect id="22c8c"></delect></sup>
  • <small id="22c8c"></small>
    <sup id="22c8c"><cite id="22c8c"></cite></sup>
    精品免费视频,www.午夜,精品香蕉99久久久久网站,国产成人精品午夜在线播放,国产极品美女到高潮,日韩精品一二三四五区,五月婷丁香,国产精品 欧美激情 在线播放
    Hello! Welcome to the website of Dongguan Youchen Electronic Technology Co., Ltd.

    Youchen Technology

    Chip Capacitor/Electrolytic Capacitor/Ceramic Capacitor Supplier
    18929295505
    admin@dgyouchen.com
    Current Page: Home > News > Industry news
    News

    On the working properties and types of antennas

    2019-07-23

               antennaAntenna is a type of converter that transforms guided waves propagating on a transmission line into waves propagating in an unbounded medium (usually free space)electromagnetic wave Or make the opposite transformation. stayradio The component in a device used to transmit or receive electromagnetic waves. Radio communicationbroadcast Engineering systems such as television, radar, navigation, electronic countermeasures, remote sensing, radio astronomy, etc. that use electromagnetic waves to transmit information rely on antennas for operation. In addition, when using electromagnetic waves to transmit energy, non signal energyradiation An antenna is also required. Generally, antennas havereversible The same antenna can be used as both a transmitting antenna and a receiving antenna. The basic characteristic parameters for transmitting or receiving the same antenna are the same.

    1. PressNature of WorkIt can be divided into transmitting antenna and receiving antenna.

    2. PresspurposeIt can be divided into communication antenna, broadcast antenna, Television antenna, radar antenna, etc.

    3. According to directionality, it can be divided into omnidirectional antennas and directional antennas.

    4. PressWorking wavelengthIt can be divided into ultra long wave antennas, long wave antennas, medium wave antennas, short wave antennas, ultra short wave antennas, microwave antennas, etc.

    5. PressStructural form and working principleIt can be divided into line antennas and surface antennas, etc. The characteristic parameters describing the antenna include pattern, directivity coefficient, gain, input impedance, radiation efficiency, polarization, and bandwidth

    6. PressdimensionIt can be divided into two types: one-dimensional antenna and two-dimensional antenna

    One dimensional antenna: composed of many wires, which are either straight lines used on mobile phones or some clever shapes, like the old rabbit ears used on televisions before the emergence of cables. Monopole and two-stage antennas are the two most basic one-dimensional antennas.

    2D antenna: There are various variations, including sheet shape (a square metal), array shape (a bundle of organized 2D patterns), as well as horn shape and disc shape.

    7. Antenna according toUsage occasionThe differences can be divided into three categories: handheld antenna, car antenna, and base antenna.

    Handheld radio antenna: refers to the antenna used by individuals for handheld walkie talkies, commonly divided into two categories: rubber antenna and rod antenna.

    Car antenna: refers to the communication antenna originally designed and installed on vehicles, with the most common and common application being the suction cup antenna. There are also shortened, quarter wavelength, central sensing, five eighth wavelength, and dual half wavelength antennas in the structure of car mounted antennas.

    Base station antenna: plays a crucial role in the entire communication system, especially as a communication hub for communication stations. The commonly used base station antennas include fiberglass high gain antennas, four ring array antennas (eight ring array antennas), and directional antennas.
    Dongguan Youchen Electronic Technology Co., Ltd
    Tel: 0769-85328400 8533526885336465
    Fax: 0769-85308615
    Email: admin@dgyouchen.com
    Website: m.csggw.com
    Address: Floor 3, No. 7 Xinfeng Road, Shangsha Fourth Industrial Zone, Chang'an Town, Dongguan City, Guangdong Province

    Previous Page:Memory module=memory module

    Next Page:Why are RF filters becoming increasingly important?
    Youchen Technology
    Dongguan Youchen Electronic Technology Co., Ltd
    Tel: 0769-85328400 8533526885336465
    Fax: 0769-85308615
    Email: admin@dgyouchen.com
    Website: m.csggw.com
    Address: Floor 3, No. 7 Xinfeng Road, Shangsha Fourth Industrial Zone, Chang'an Town, Dongguan City, Guangdong Province
    Yue ICP Bei No. 13008404
    All rights reserved:Dongguan Youchen Electronic Technology Co., Ltd
    In-line aluminum electrolytic capacitor manufacturer, SMT aluminum electrolytic capacitor manufacturer, direct sales, brand selection, model selection, price
    Follow us:

    Do you need our help? Welcome to leave your email!
    Subscription
    18929295505  
    2324774509
    admin@dgyouchen.com
    主站蜘蛛池模板: 欧美VA亚洲VA在线观看日本| 18禁影院亚洲专区| 亚洲中文字幕成人无码| 亚洲一区二区三区久久综合| 国产 中文 制服丝袜 另类| 久久人人爽天天玩人人妻精品| 成人无码区免费A∨| 午夜福利激情| 综合色区亚洲熟女妇p| 欧美亚洲国产精品久久| 人妻精品中文久久一区| 狼友视频网站| 亚洲国产精品久久久久久网站| 久久久国产精品视频| 亚洲男同GV在线观看| 97超级碰精品视频免费播放 | 2020久热爱精品视频在线观看| 波多野结衣中文一区二区三区| 亚洲 欧洲 偷拍 校园 另类| 欧美又粗又长又爽做受| 亚洲欧洲久久久精品| 久久99久久精品视频| 福利姬操逼国产| 亚洲一区二区三区在线播放| 亚洲最大无码中文字幕| 福利无遮挡喷水高潮| 奇米777四色精品综合影院| 这里只有精品在线观看| 一区二区三区福利午夜| 国内自拍无码区在线播放| 首页亚洲国产丝袜长腿综合| 亚洲日本一区二区三区在线不卡| 亚洲国产一区二区三区在观看 | 久久精品国产亚洲AV古装片| 精品国产亚洲一区二区三区| 国产无遮挡裸体美女视频| 亚洲欧美综合精品久久成人网| 亚洲欧美国产精品久久久| 天津市| 午夜精品久久久久成人| 日本一区二区视频在线播放|