Shenzhen Wudi Microelectronics Co., Ltd

The working principle of a satellite receiver The satellite television receiving system is a complete set of satellite ground receiving stations composed of a parabolic antenna, a feed source, a high-frequency head, and a satellite receiver.

1. A parabolic antenna is a focal point that reflects and converges the energy of satellite signals from the air.

2. A feed source is a horn located at the focal point of a parabolic antenna that is afraid of satellite signals, called a feed source. It means the source of energy that is required to collect all the energy that comes to the focal point. The feedforward satellite receiving antenna basically uses a large angle ripple feed source.

3. High frequency head (Inb, also known as a frequency reducer) is a device that reduces and amplifies the satellite signal sent by the feed source before transmitting it to the satellite receiver. The lower the noise level of the high-frequency head, the better.

4. The satellite receiver demodulates the satellite signal transmitted by the high-frequency head, demodulating the satellite TV image signal and accompanying audio signal. The satellite receiver decodes the digital television signal transmitted by the satellite through channels and sources, converts the transmitted digital code stream into its original compressed form, and then sends it to a regular television receiver after D/A conversion and video encoding.