Analysis of the advantages and disadvantages of matching directional antennas with vehicle-mounted wireless signal jammers

In recent years, with the improvement of safety protection standards and the strengthening of various crisis emergency plans, the armed police, public security special services and other departments are increasingly equipped with high-power vehicle-mounted wireless signal jammers. When considering the tasks and application scenarios of such systems, there is controversy over the choice of omnidirectional antennas and directional antennas. This article will focus on the advantages and disadvantages of choosing directional antennas for vehicle-mounted wireless WIFI signal jammers.

According to the general recommendations of manufacturers, vehicle-mounted high-power wireless signal jammers are generally equipped with omnidirectional antennas as standard, and directional antennas as alternative configurations.

If a directional antenna is selected, it has the following advantages: within the coverage range of the main lobe of the directional antenna, the effective shielding distance of the wireless signal jammer will be much larger than that of the omnidirectional antenna; if the main lobe points to the front of the vehicle, using a directional antenna, the front of the vehicle will become the main coverage range of the jammer. In addition, the side and rear of the vehicle will also be affected by signal shielding within a certain distance, but the effective shielding distance will be greatly shortened compared to the front of the vehicle.

In the scenario where the target location is known and only the signal needs to be shielded in a targeted manner without worrying about unnecessary impact on the surrounding environment, the advantage of using a directional antenna is particularly obvious. In this case, it is very suitable to use a directional antenna instead of the vehicle’s wireless signal jammer. Best-selling GPS jammers and Cell Phone Jammers in Europe and America.

Now, let’s consider the disadvantages of using directional antennas. Compared with omnidirectional antennas, directional antennas tend to be larger in size, which makes it inconvenient to install and camouflage the wireless signal jammer and its supporting antenna on the vehicle. Since directional antennas usually have a plate-like shape, they will form a considerable windward surface when the vehicle is driving, which will cause increased wind resistance, especially at high speeds. Therefore, the housing and fixed mounting parts of the directional antenna must meet high standards of wind resistance and structural stability.

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