永久免费观看的毛片手机视频-日韩精品无码一区二区三区-国产精品一区在线观看你懂的-亚洲学生妹高清av-久久香综合精品久久伊人

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.sh-hongtu.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.sh-hongtu.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: 亚洲成a人v欧美综合天堂下载| 久久精品国产亚洲av蜜臀色欲| 99久久国产综合精品五月天| 亚洲av片一区二区三区| 国内精品免费久久久久电影院97| 毛茸茸的中国女bbw| 国产女主播高潮在线播放| 亚洲av无码久久精品蜜桃| 性欧美大战久久久久久久| 欧洲熟妇精品视频| 亚洲国产精品一区二区第一页| 国产三级在线观看完整版| 特级欧美插插插插插bbbbb| 欧美xxxxx在线观看| 美女裸体十八禁免费网站| 一群黑人大战亚裔女在线播放| 久久精品国产亚洲av麻豆甜| 亚洲 自拍 另类 欧美 综合| 无码少妇一区二区| 韩国精品一区二区三区无码视频 | 国99精品无码一区二区三区| 久久人妻少妇嫩草av| 无限看片在线版免费视频大全| 高潮毛片无遮挡高清视频播放| 亚洲日本va中文字幕| 欧美日韩中文国产一区| 色妞色视频一区二区三区四区| 中文字幕爆乳julia女教师| 深夜爽爽动态图无遮无挡| 丁香色欲久久久久久综合网 | 最近最好的中文字幕2019免费| 久久精品国产亚洲av日韩| 三年片观看免费| 真人无码作爱免费视频禁hnn| а√最新版在线天堂| 无码一区二区三区亚洲人妻| 国内精品自线在拍| 亚洲妇熟xxxx妇色黄| 性色av免费观看| 性激烈的欧美三级视频| 麻豆最新国产av原创精品|