parabolic reflector antenna
parabolic reflector antenna A parabolic reflector antenna is a type of antenna that uses a parabolic reflector, a curved surface with the cross-sectional shape of a parabola, to direct radio waves. The most common form is shaped like a dish and is popularly called a dish antenna or parabolic dish. Parabolic reflector antennas are used in a wide variety of applications, including: Satellite communication Radar Microwave radio relay Radio astronomy Wireless internet The main advantage of a parabolic antenna is that it has high directivity. This means that it can focus radio waves into a narrow beam, or receive radio waves from one particular direction only. This makes parabolic antennas ideal for applications where long distances need to be covered, or where precise directionality is important. Parabolic antennas work by reflecting radio waves off the parabolic reflector. When radio waves strike a parabolic reflector, they are reflected in a way that focuses them into a beam along t...