Directional antenna signal transmission and coverage for 5G signal jammer
Due to differences in application environments or usage scenarios, the antennas configured in 5G signal jammers usually have two options: omnidirectional antennas and directional antennas. It is easier for customers to understand the coverage and signal transmission direction of omnidirectional antennas, but they are somewhat unclear about the signal transmission direction and coverage of directional antennas. Will using directional antennas no longer interfere with the sides and rear?
Directional antenna literally means directional. When explaining to some customers who are not familiar with the field of wireless communications, a vivid metaphor is sometimes used, that is, the radiation emitted by a directional antenna emits wireless signals in one direction, just like The same light as a flashlight. The difference is that the light will only illuminate the front. Since the sides and back are blocked by flashlight reflectors, the light will not spread to these areas at all.
When a 5G jammer uses a directional antenna, the transmission path and coverage of the interference signal are indeed different from the way a flashlight transmits light. If you perform 3D detection and modeling of the signal transmission of the directional antenna through a microwave anechoic chamber, you can see more intuitively: In fact, there are still shielded signals on both sides and behind the directional antenna that are continuously emitted, but the signal strength and transmission in this area are The distance will be significantly lower than the front direction.
The wireless signal transmitted from the front direction of the directional antenna is called the main lobe and has a lobe angle. The previous analogy of using flashlight light actually mainly uses the coverage area of this main lobe as a similar object. In addition, what needs to be further understood is that there are many classifications of directional antennas, and their working principles, antenna materials, and production methods are also very different. This will also cause huge differences in the main lobe and side lobe angles, transmission distance, etc. of directional antennas. Careful screening and selection must be made when configuring directional antennas for 5G signal jammers.
