Digital satellite broadcasting receiver

Details Digital satellite broadcasting receiver Digital satellite broadcasting receiver

1996-09-26

1999-10-26

Chin, Stephen

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

455106, 455300, 455301, H03D 100, H04L 2706

Patent

active

059740957

ABSTRACT:
A tuner part of a digital satellite broadcasting receiver includes an IF signal demodulator part and an I/Q signal demodulator part. These demodulator parts are formed on different substrates, and covered with different chassis respectively. Low-pass filters are provided between an amplifier circuit of the IF signal demodulator part and an output terminal and between an IF signal input terminal of the I/Q signal demodulator part and a baseband converter circuit respectively. Further, an AGC detector circuit for detecting the level of an IF signal for the baseband converter circuit is provided for controlling the amplifier circuit of the IF signal demodulator part by its AGC voltage.

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