vehicle antennaUsed for radios and radios in cars, some cars have built-in antennas. Car mounted antenna refers to a mobile communication antenna designed and installed on a vehicle, commonly known as a suction cup antenna. Due to the ease of installation and placement of suction cup antennas, suction cup antennas are often used instead of base antennas in some simple installation scenarios. There are various types of antennas in the structure of car mounted antennas, such as shortened, quarter wavelength, central sensing, five eighth wavelength, and double half wavelength. The higher the working efficiency, the longer the antenna will be, just like the signal tower of a mobile phone. The higher the height, the larger the coverage area.

Attention to Installing Antennas: Due to the limited height of some vehicles and the wind resistance caused by excessively long antennas when the vehicle is traveling at high speeds, crossing bridges or entering underground garages can be a problem. Therefore, longer antennas are not necessarily better. Generally, car antennas are required to be no more than 70 centimeters long, while van antennas are required to be shorter.

New type antenna: The new "shortened antenna" is compact in size, and although the gain is not high, it is suitable for use in situations where concealed antennas are needed. It is recommended to install high gain antennas for general vehicles, especially for vehicles with large activity areas. The 350MHz high gain antenna is mostly in the form of a 5/8 wavelength induction coil, with an induction coil located at a distance of half the wavelength from the top of the antenna. The dual half wavelength antenna in the 400MHz frequency band has high gain, and its appearance feature is that there are two inductive coils on the antenna's oscillator. The five eighth wavelength antenna and the central sensing antenna also have high gain and are relatively inexpensive, so they are widely used. When used as a temporary fixed antenna, it is recommended to choose a suction cup antenna with high gain, and the length of the antenna does not need to be too limited.

In terms of price: As the suction cup antenna is designed according to the automotive usage environment, it is more effective to use it as a fixed device by sucking a metal plate (such as iron sheet) with a radius greater than 1 meter underneath. Due to the high cost and limited advantages of imported original car antennas, domestic car antennas are generally chosen. In the antenna selection stage, the main reference is the appearance and gain of the antenna. It is recommended to choose products from large manufacturers, as the parameters they provide are relatively accurate and the manufacturing process is guaranteed. If it is a bulk purchase, it can be customized by professional antenna manufacturers according to the frequency band used to achieve the desired effect.