How Satellite TV Works

Dec. 25, 2020

When the signal reaches the viewer's room, it will be captured by the satellite antenna. A Satellite Dish is a special antenna designed specifically for a specific broadcast source. The standard petri dish consists of a parabola and a central feed angle. In order to transmit the signal, the controller sends out the signal through the horn, and the dish antenna focuses the signal into a relatively narrow beam.

The receiving end antenna cannot transmit information; it can only receive it. The working mode of the receiving plate is completely opposite to that of the transmitter. When the beam hits the curved plate, the parabolic shape reflects the radio signal inward to a specific point, just like a concave mirror focuses the light on a specific point.

In this case, the key is the timing of the antenna, which sends the signal to the receiving device. In an ideal situation, there are no major obstacles between the satellite and the antenna, so the antenna receives a clear signal.

Satellite Antennas

Satellite Antennas

In some systems, the dish antenna needs to receive signals from two or more Satellite Antennas at the same time. Satellites may be very close to us, and a dish antenna with a single horn can receive both signals. This affects the quality to a certain extent, because the dish antenna is not directly aimed at one or more satellites. A new antenna design uses two or more speakers to receive different satellite signals. When beams from different satellites hit the curved dish antenna, they will reflect at different angles, so one beam hits one corner and the other hits another corner.

The central element of the feed horn is a low-noise buck converter or LNB. The LNB amplifies the radio signal from the dish antenna and filters out noise. The LNB transmits the amplified and filtered signal to the satellite receiver in the audience room.

If you need or have more questions, please contact the Satellite Antenna Manufacturer