SOLAR SYSTEM

Detailed explanation-1: -Helixes have magnetoelectric properties. Because of which the left and right circularly polarized light travel at different velocities. This leads to Faraday’s effect. The circular polarization is useful for satellite and space probe communications as polarization rotation of waves is produced by the ionosphere.

Detailed explanation-2: -Helical broadcasting antennas Specialized normal-mode helical antennas are used as transmitting antennas for FM radio and television broadcasting stations on the VHF and UHF bands.

Detailed explanation-3: -Four main types of antennas are used on present communication satellites: wire antennas, horn antennas, reflector antennas, and array antennas. Wire antennas were used on the early operational satellites such as INTELSAT I and II with an antenna gain of about 4 dBi for receive and about 9 dBi for transmit.

Detailed explanation-4: -Helical Antenna: It is a combination of an array of horizontal and vertical wires giving a polarization in both directions resulting in the circularly polarized wave.