The antenna signal can go through the wall. Electromagnetic wave propagates not only in straight line, but also in penetration, reflection, diffraction and other phenomena when encountering obstacles. The wireless signal we usually use is the signal after reaching through a variety of paths.

The antenna modification is effective. In order to meet the needs of most users, the original antenna is basically omnidirectional antenna. Modified antenna is generally modified directional antenna, the signal is more concentrated, the effect is more obvious.

The antenna distance can be calculated by the formula, just as a reference. In actual flight, the environment, WIFI, signal tower and other interference is more, subject to the actual flight distance. (We provide only the participating distance) Calculation formula:

Right rotation and left rotation do not refer to the tightening direction of the antenna joint, but to a polarization characteristic of the antenna. Circular polarization occurs when the included Angle between the polarization plane of radio waves and the earth normal plane changes periodically from 0 to 360 degrees, that is, the size of the electric field is unchanged, the direction changes with time, and the trajectory of the end of the electric quantity vector is projected as a circle on the plane perpendicular to the propagation direction. Circular polarization can be obtained when the amplitude of the horizontal and vertical components of the electric field is equal and the phase difference is 90 degrees or 270 degrees. Circular polarization, if the polarization surface rotates with time and the direction of electromagnetic wave propagation into a right spiral relationship, called right circular polarization; Conversely, if a left spiral relationship, said left circular polarizati

An antenna is a converter that converts a traveling guided wave traveling along a transmission line into an electromagnetic wave traveling in an unbounded medium (usually free space), or vice versa. A component in radio equipment used to transmit or receive electromagnetic waves. Radio communication, broadcasting, television, radar, navigation, electronic countermeasures, remote sensing, radio astronomy and other engineering systems, all use electromagnetic waves to transmit information, rely on antennas to work. In addition, in terms of transmitting energy by electromagnetic waves, non-signal energy radiation also requires antennas. General antennas have reversibility, that is, the same antenna can be used as both transmitting antenna and receiving antenna. The basic characteristic parameters of the same antenna as transmitting or receiving are the same. That's the reciprocity theorem for antennas.