In recent years, with the improvement of security protection standards and the continuous improvement of emergency response plans for various emergencies, the armed police or the special services of the public security have begun to equip high-power wifi jammer one after another to face various tasks. When it comes to application scenarios, it has led to a discussion on whether to choose an omnidirectional antenna or a directional antenna. Here, we will focus on the advantages and disadvantages of choosing a directional antenna for a car wireless wifi signal jammer.
According to the conventional recommendations of our manufacturers, omnidirectional antennas are usually used as the standard configuration of vehicle-mounted high-power wifi jammer device. The directional antenna is only one of the alternative configurations.
Advantages and disadvantages of directional antennas
If you choose a directional antenna, the advantages are: in the direction covered by the main lobe of the directional antenna, the effective shielding distance of the wireless wifi jammer will be significantly larger than that of the omnidirectional antenna. If the direction of the main lobe is towards the front of the vehicle, after using the directional antenna, the front of the vehicle is the main coverage area of the shielding device, and the sides and rear of the vehicle will also have the effect of signal shielding within a certain distance, but The effective shielding distance will be greatly reduced compared to the front of the vehicle.
The advantages shown by this kind of directional antenna, if the use scenario is: the target position is clear, only the signal shielding needs to be carried out in a targeted manner, and at the same time, it is not expected to have an unnecessary influence on the outside world, then give the car wifi frequency jammer. It is very suitable to replace the directional antenna.
Next, let's look at the disadvantages of using directional antennas: comparing directional antennas with omnidirectional antennas, the directional antennas will be significantly larger in size than omnidirectional antennas, which will lead to the use of wireless signal jammers and matching antennas. When the directional antenna is installed on the vehicle by modification, it will be very inconvenient for the directional antenna to fall or camouflage, and because the directional antenna is mostly in the shape of a plate, once the vehicle is running, the casing of the directional antenna will form a large windward surface. , especially in the process of high-speed driving, the wind resistance will become very large, which will put forward high requirements on the compressive performance of the wind resistance of the directional antenna and the fixed installation components of the directional antenna.
