What role does strong antenna orientation play?

　　Now you should not be unfamiliar with the antenna, but only stay on the surface of the understanding, today, electronic antenna manufacturers will take you to test the directionality of the antenna, together to follow.

　　12.1 Antenna Directivity

　　One of the basic functions of the transmitting antenna is to radiate the energy from the feeder to the surrounding space. The other is to radiate most of the energy in the desired direction. The vertical half-wave symmetric oscillator has a flat "doughnut" shape stereo pattern. Stereo pattern has strong stereo sense, but it is difficult to draw. Planar pattern is used to describe the directivity of antenna on a given plane.

　　12.2 Directional enhancement

　　Several symmetrical oscillator arrays can control radiation, produce "flat bread ring" and further concentrate the signal in the horizontal direction. The radiation energy can also be controlled to a single direction by using the reflector. The planar reflector is placed on one side of the array to form a sector-covered antenna. The horizontal pattern below illustrates the role of the reflector, which reflects power to one side and improves gain.

　　The use of parabolic reflector can make the antenna radiation, like the searchlight in optics, concentrate the energy into a small solid angle, so as to obtain a high gain. It is self-evident that the parabolic antenna consists of two basic elements: the parabolic reflector and the radiation source placed in the focus of the parabolic surface.

　　It seems that this is not very understandable, but it still needs to be tested to know, but the manufacturer of electronic antenna reminds you: must be accompanied by professionals in order to carry out oh.