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: 久久一区二区三区精华液| 欧美人与物videos另类| 亚洲自偷自偷偷色无码中文| 国产女精品视频网站免费| 无码人妻精品一区二区在线视频| 把插八插露脸对白内射| 少妇真实被内射视频三四区| 亚洲精品蜜夜内射| 国产精品免费精品自在线观看| 中文精品久久久久国产网址| 女人扒开屁股桶爽30分钟| 国模杨依粉嫩蝴蝶150p| 亚洲精品中文字幕无码蜜桃| a级毛片免费网站| 欧美黑人xxxx高潮猛交| 久久aaaa片一区二区| 成人毛片18女人毛片免费| 全部露出来毛走秀福利视频| 乱码视频午夜在线观看| 国产午夜精品一区二区三区不卡 | 国产精品宾馆在线精品酒店| 最新国产毛2卡3卡4卡| 黑人巨大跨种族video| 欧美做受又硬又粗又大视频| 天美麻花果冻视频大全英文版| 免费人成在线观看网站 | 青青青青青手机视频在线观看视频| 久久久噜噜噜久久熟女aa片| 国产精品麻豆va在线播放| 久久综合狠狠色综合伊人| 中文字幕久久精品无码| 亚洲av中文无码字幕色本草| 少妇伦子伦精品无码styles| 97人人添人人澡人人澡人人澡| 日本中文字幕一区二区有码在线 | 最新电影在线观看| 亚洲中文字幕久久精品无码喷水| 少妇午夜啪爽嗷嗷叫视频 | 日日碰狠狠添天天爽无码| 蜜臀久久99精品久久久久久小说| 国产免费一区二区三区免费视频 |