Parabolic Reflector, Solid Dish

The Dish Reflector antenna embodies a design that utilises a parabolic reflector, a curved surface with a cross-sectional shape of a parabola, to direct the radio waves. The primary function of this design is to collect and focus electromagnetic waves onto the antenna feed, similar to the way a satellite dish operates. The design of the Dish Reflector antenna is based on the principle of geometric optics. This principle allows the antenna to focus incoming waves onto a single point, the feed, thus enhancing the signal strength. The feed, located at the focal point of the reflector, is responsible for transmitting or receiving the radio waves to or from the reflector. The size of the dish is directly proportional to the wavelength of the signal: the larger the dish, the higher the gain and directivity, resulting in a more focused beam of radio waves. This characteristic makes the Dish Reflector antenna an excellent choice for long-distance microwave communication and radar systems. The construction of a Dish Reflector antenna can be either solid or mesh. A solid dish, as the name suggests, has a continuous, unbroken surface that provides a high-efficiency reflection of radio waves. However, this design can be susceptible to wind loading due to its solid structure.