<ruby id="gv6br"></ruby>
          1. 97精品国产手机,亚洲成a人无码,熟女中文字幕好看视频,专区久久五月天,自拍偷区亚洲综合第一页欧,中文在线а天堂中文在线新版,把它堵住不能流出来,亚洲中字无码av电影在线观看
            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.8ykt.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.8ykt.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: 亚洲欧洲美洲无码精品| 一本久久免费视频| 无码绝顶抽搐潮喷在线观看| 日本va欧美va欧美va精品| 免费99视频| 静宁县| 一个人看的www免费视频在线观看| 国产videossex精品| 天天操天天操| 亚洲欧洲自拍拍二区| 中文乱码人妻系列一区二区| 国产免费一区二区三区视频| 97人妻互换精品全国视频| 中文人妻熟妇精品乱又伦| 国产偷v国产偷v亚洲高清| 成人爽a毛片一区二区免费| 茄子在线看片免费人成视频| 国产片欧美片亚洲片久久综合| 国产真人一又色又粗一级毛片视频| 亚洲色偷拍另类无码专区| 亚久久伊人精品青青草原2020| 国产99视频精品观看蕾| 熟妇人妻中文字幕| 国产人妖第二页| 正镶白旗| 亚洲av中文无码乱人伦下载| 亚洲最大无码中文字幕| 888人体大胆中国人体| 精品九九人人做人人爱| 娇妻被朋友玩得呻吟在线电影| 亚洲无码原创| 人妻无码AV中文系列| 国产无套乱子伦精彩| 熟妇人妻中文AV无码| 伊人久久大香线蕉综合75| 国产日韩精品在线观看| 国产精品一久久香蕉国产线看| 国产一级牲交高潮片无码| 香蕉国产偷在线| 国产专区一线二线三线品牌东| 99re视频热这里只有精品 光棍影院|