| 摘要 |
PROBLEM TO BE SOLVED: To realize a wireless transmitter consisting of a transmitter that receives an IF signal obtained by applying analog FM modulation to a video audio signal or an IF signal obtained by digital modulation to the video audio signal, amplifies the received IF signal and transmits wirelessly the amplified IF signal and of a receiver that amplifies the received signal in a smaller size at a low cost. SOLUTION: An operating point for input/output characteristics of an amplifier means that respectively conducts amplification is switch-controlled depending on whether the input IF signal obtained by applying analog FM modulation to the video audio signal or the IF signal obtained by applying digital modulation to the video audio signal is received.
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