婷婷亚洲视频-婷婷亚洲激情-婷婷香蕉-婷婷五月在线视频-婷婷五月天.com-婷婷五 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.hearrain.cn
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.hearrain.cn
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: 免费的伦理片 | 娇妻与公陈峰姚瑶最新版 | 皇上好大好硬好涨好深好爽 | 深夜在线影院 | 久久久久久久久性潮 | 久久高清一级毛片 | 成人国产精品视频频 | jizz漫画| 99热综合在线 | 99热资源 | 亚洲欧美日韩精品久久亚洲区 | 精品久久久久国产免费 | 被强迫调教的高辣小说 | 精品高潮呻吟99AV无码视频 | 2019自拍偷拍视频 | 欧洲老太玩小伙 | 亚洲欧美成人综合在线 | 黑人与老女人做受 | 免费观看全集 | 国产成人精品综合在线观看 | 日本xx高清视频免费观看 | 亚洲乱码一区二区三区国产精品 | 婷婷久久综合 | 欧美成人aaaa免费高清 | 久久精品黄AA片一区二区三区 | 亚洲 欧美 国产 综合 播放 | 87影院在线观看视频在线观看 | 国产成人小视频在线观看 | 国士李风起全文在线阅读 | 性柔术xxxhd 性派对videos18party | 深夜福利影院在线观看 | 亚洲国产在线视频中文字 | 日本中文字幕一区二区有码在线 | 免费看男人使劲躁女人小说 | 亚洲欧美日韩国产一区图片 | 奇米影视99 | 我的奶头被客人吸的又肿又红 | 国产成人高清精品免费观看 | 精品久久久久久久久久久 | www红色一片在线观看版 | 美女漫画网 |