| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a multi channel radio apparatus which can improve an interference-proof characteristic by a simple circuit composition without increasing apparatus cost because improving the interference-proof characteristic causes a circuit size to be large, and the apparatus cost to increase in a radio apparatus of the conventional SS (Spread Spectrum) system and there remains a problem that it is not possible to get high interference-proof characteristic in the radio apparatus of the conventional ASK (Amplitude Shift Keying) system. <P>SOLUTION: A multi channel radio apparatus is provided with a transmitter including: a first vibrator 42; a second vibrator 43; a switch 44 which changes over outputs of the vibrator 42, 43; an amplifier 45 which multiplies the output of the selected vibrator by transmission data, and amplifies the result; and a control circuit 41 which outputs a selecting signal which selects an output of the first vibrator 42 to the switch 44, outputs transmission data to the amplifier 45, and outputs a selecting signal which selects an output of the second vibrator 43 to the switch 44 and outputs the transmission data which are the same transmission data of the above to the amplifier 45. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
