Basic knowledge of portable marine radio antenna
Marine Radio Exporter shared that the radiofrequency signal power output by a radio transmitter is transmitted to the antenna via a feeder (cable), which radiates out in the form of electromagnetic waves. After the electromagnetic wave arrives at the receiving site, it is followed by the antenna (which receives only a very small part of power) and sent to the radio receiver through a feeder. It can be seen that antenna is an important radio equipment for transmitting and receiving electromagnetic waves.
There are a wide variety of antennas for different frequencies, different USES, different occasions, different requirements, etc.
For a wide variety of antennas, appropriate classification is necessary:
It can be divided into communication antenna, television antenna, radar antenna and so on. According to the working frequency, it can be divided into short-wave antenna, ultra-short wave antenna, microwave antenna, etc. According to the directional classification, it can be divided into omnidirectional antenna, directional antenna, etc. According to the shape classification, it can be divided into linear antenna, planar antenna, etc. And so on.
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