Cassegrain Reflector

A specialised type of directional antenna, notable for its use of two reflectors - a primary parabolic reflector and a secondary hyperbolic or ellipsoidal reflector. Named after the Cassegrain optical telescope design, this antenna works by focusing the energy onto the small secondary reflector, which then projects the energy out towards the primary reflector and further on to the receiving device. This results in a high gain, or an increase in power, and a narrow beamwidth, which is the area over which the antenna transmits or receives signal effectively. Its design allows for reduced physical size of the antenna while maintaining high performance, making the Cassegrain reflector antenna commonly used in satellite communication and radio astronomy applications.