SOLAR SYSTEM

Detailed explanation-1: -The downlink satellite signal, quite weak after traveling the great distance (see path loss), is collected with a parabolic receiving dish, which reflects the weak signal to the dish’s focal point.

Detailed explanation-2: -Explanation: LNA detects the satellite signal relayed from the feed and converts it to an electric current, amplifies and lower its frequency. The most common device used as an LNA is tunnel diode.

Detailed explanation-3: -Telstar, launched on July 10, 1962, was the world’s first active communications satellite. After its launch, models of the satellite circulated around the US to museums and local community centers.

Detailed explanation-4: -Brief Description. Telstar, launched in 1962, was the first active communications satellite: it received microwave signals from ground stations and retransmitted them across vast distances back to Earth. It was the model for all subsequent communications satellites.

Detailed explanation-5: -The first passive satellite transponder was developed and launched by the United States in 1960. The satellite, known as Echo 1, was a large metallic balloon that was able to reflect radio signals back to Earth. The Echo 1 satellite was launched into a low Earth orbit and had a diameter of approximately 100 feet.