| 摘要 |
<p>Broadcast channel signals received from a satellite are converted by group conversion in mixers and are input to a first switch circuit. Then, the signals are output from first and second output terminals and are input to first and second frequency converting blocks. First and second attenuators are provided between the first and second output terminals and the first and second frequency converting blocks. Gain in an IF amplifier is increased and the gain increased in the IF amplifier is decreased in first to fourth attenuators, so that total gain is maintained.</p> |
