| 摘要 |
<p>This device prevents harmonics of a first transmission signal from affecting a received signal output circuit of a second received signal even when the frequency band of harmonics of the first transmitted signal and the frequency band of the second received signal are adjacent, said signals being transmitted and received with different antennae. A common terminal PIC (ANT0) of a switch IC (10) is connected to a first antenna ANT (1). An individual terminal PIC (RF9) of the switch IC (10) is connected to an individual I/O port PM (LTE) which inputs and outputs a W-CDMA (Band13) communication signal. A second antenna ANT (2) is connected to a GPS signal receiving system circuit. The transmission line which connects the individual terminal PIC (RF9) of the switch IC (10) and the individual I/O port PM (LTE) is connected to ground via an inductor, and by means of this configuration, a phase circuit (50) can be realized which rotates the phase of the second harmonic of the W-CDMA (Band13) communication signal.</p> |
