| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce power consumption in a communication apparatus which packages a plurality of antennas and a plurality of tuners therein. <P>SOLUTION: A communication apparatus 110 includes a first tuner 20a, a second tuner 20b, a level shifter 30, a demodulator 40 and a fixed voltage generating circuit 50. A power supply voltage is supplied to a high-potential side power supply terminal of the first tuner 20a, a low-potential side power supply terminal of the first tuner 20a and a high-potential side power supply terminal of the second tuner 20b are connected, and a low-potential side power supply terminal of the second tuner 20b is connected to a ground. The fixed voltage generating circuit 50 is connected to a connecting point of the low-potential side power supply terminal of the first tuner 20a and the high-potential side power supply terminal of the second tuner 20b and a voltage at the connecting point is fixed to a fixed voltage. <P>COPYRIGHT: (C)2010,JPO&INPIT |
