| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To control transmission power in simple configuration. <P>SOLUTION: In a digital filter 3, the transmitting signals of I sequence and Q sequence are outputted with amplitudes corresponding to respective gain parametersβi andβq. Two transmitting signals outputted from the digital filter 3 are applied with quadrature modulation by a quadrature modulator 4 and the resulting modulated signal is amplified and transmitted by an amplifier 6. The gain of the amplifier 6 is increased/decreased corresponding to an instruction in a step width by an adder 9, a latch part 10, an offset part 9 and an adder 12 and controlled corresponding to the change of the gain parameterβq. <P>COPYRIGHT: (C)2003,JPO</p> |
