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Analysis of the advantages and disadvantages of optional directional antennas for vehicle wireless jammers

Analysis of the advantages and disadvantages of optional directional antennas for vehicle wireless jammers

  • 2022-10-24

wireless jammer

In recent years, with the improvement of safety 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 vehicle-mounted wireless jammers one after another. Tasks and application scenarios lead 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 vehicle wireless jammers.

According to the conventional recommendations of our manufacturers, omnidirectional antennas are usually used as the standard configuration of vehicle-mounted high-power wireless jammers. The directional antenna is only one of the alternative configurations.
If a directional antenna is selected, its advantages are: in the direction covered by the main lobe of the directional antenna, the effective shielding distance of the wireless 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 unnecessary influence on the outside world, then change the direction of the vehicle wireless jammer. Antenna is very suitable.
Next, let's take a 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 modification of wireless jammers and matching antennas. When installed on the vehicle, the lodging or camouflage of the directional antenna will be very inconvenient, and because the directional antenna is mostly in the shape of a plate, once the vehicle is running, the shell of the directional antenna will form a large windward surface, especially It is during high-speed driving that 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.

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