Products Category
Contact Us
Name: Elaine Hu
Tel: 8601062669007
Fax: 8601082822901
Mobile: 86 13051026936
E-mail: cisco-elaine@hcyxxx.com
Add: #5 Building No.1 Yard ShangDi Tenth Street HaiDian District BeiJing 100085
News
The function and position of antenna |
| Author： Date：2016/7/27 10:57:16 |
Radio transmitter output radio frequency signal power, through the feeder (cable) to the antenna, the antenna in the form of electromagnetic radiation to go out. After arrival at the receiving site, the electromagnetic wave is received by the antenna (only a small fraction of the power is received), and is sent to the radio receiver via the feeder.
It is seen that the antenna is an important radio equipment to transmit and receive electromagnetic waves. Antenna variety, for different frequencies, different uses, different occasions, different requirements, such as the use of different circumstances.
For many varieties of antenna, proper classification is necessary: according to the purpose of the classification, can be divided into communication antenna, TV antenna, radar antenna; according to the working frequency band classification, can be divided into short wave antenna, ultra short wave antenna and microwave antennas; according to the direction of classification, can be divided into omni-directional antenna and directional antenna; according to shape classification, can be divided into linear antenna, planar antennas. |