| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enable high-speed switching of hopping frequency, while stabilizing the electric power level of a signal that is outputted from an antenna. <P>SOLUTION: A transmitting circuit transmits a power signal in a hopping-frequency system, from an antenna 4 connected via a transmission channel 3, and has a regulator 14 for outputting an amplitude-setting level, with respect to each hopping frequency of the power signal, before being transmitted, according to the power level of the power signal in the antenna 4; a predriver 11 for regulating the amplitude of the power signal, before being transmitted according to the amplitude-setting level; and a power amplifier 12 for outputting the power signal to with respect to transmission channel 3, corresponding to the signal outputted from the predriver 11. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
