A dish-shaped antenna, such as those used in satellite TV systems, is called a _____.

A dish-shaped antenna, commonly utilized in satellite TV systems, is referred to as a parabolic antenna. This type of antenna features a reflective surface that is shaped like a parabola, which allows it to effectively focus incoming signals onto a single point, known as the feed point. The design enables enhanced signal reception and transmission, making it ideal for applications like satellite communication, where precise aiming at satellites is crucial.

Parabolic antennas are characterized by their ability to work at high frequencies and their capability to collect and amplify weak signals, an essential feature for satellite systems that operate over large distances. The curved design channelizes the radio waves so that they converge at the feed, where the receiver or transmitter is located, which significantly increases the overall efficiency.

Other antenna types, such as whip, dipole, and Yagi antennas, serve different purposes and have distinct characteristics that do not match the design or functionality of a dish-shaped parabolic antenna. For example, whip antennas are typically used for portable applications and lack the concentrated directional capabilities. Dipole antennas have a simple linear configuration and do not have the reflective capability or gain associated with parabolic designs, while Yagi antennas are directional but less effective in focusing signals compared to parabolic antennas.