<tfoot id="aaaaa"><dd id="aaaaa"></dd></tfoot>
<tfoot id="aaaaa"></tfoot>
    <nav id="aaaaa"></nav>
      <noscript id="aaaaa"></noscript>
        <tr id="aaaaa"></tr>
      • 日本阿v精品视频在线观看 ,中文字幕日韩欧美一区二区三区,日韩一区二区av,日韩乱码人妻无码超清蜜桃,日本一区二区三区午夜,一区二区三区无码不卡无在线,人妻无码中文专区久久综合,国产精品自在线拍国产手机版
        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: www.hzzah.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: www.hzzah.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: 国产成人乱码一二三区18| 这里只有精品在线观看| 2021久久精品永久免费| 欧美疯狂xxxxbbbb牲交| 男人到天堂在线a无码| 色香蕉在线观看网站| 国产精品白浆在线播放| 久久人搡人人玩人妻精品一| 久久91精品国产91久久麻豆| 免费三级网站| 欧美国产日韩在线| 九九自拍视频| 精品福利一区二区免费视频| 久久综合给合久久97色| 欧美日韩在线精品一区二区三区| 欧美人成精品网站播放| 久久精品一区二区三区四区| 99热这里只有精品免费| 日韩不卡无码精品一区高清视频| 深夜精品免费在线观看| 在线播放国产精品日韩| 国产精品久久久久久久久齐齐| 黃色一级毛片9299步免费| HEYZO无码中文字幕人妻| 国产av一区二区三区日韩| 国产成人免费无码视频在线观看| 正阳县| 中文字幕免费不卡在线视频| 日韩91| 无码人妻精品一区二区三区9厂 | 都市激情亚洲综合久久| 欧美极品免费专区高清在线| 黄色日本视频| 久久精品国产在热久久2019| 亚洲欧洲精品成人久久曰不卡| 国产国产人免费观看在线视频| 山阳县| 婷婷六月激情综合一区| 亚州AV秘 一区二区三区| 国产精品自拍毛片一区| 青草91视频免费观看|