The point focusing lens antenna consists of a conical horn or conical corrugated horn and a convex lens. The characteristic is that the beam converges on the focus of the design to form a focal spot. The focal length and aperture size can be customized according to user requirements. When the focal points of two point-focusing lens antennas coincide, the transmission loss between the two antennas is minimal. Because the area near the intersection point is small, it is one of the best methods to study the