| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enhance a composite noise figure in a reception system. <P>SOLUTION: In the wireless communication apparatus wherein a transmission signal from a transmission/reception processing means 1 is fed to a transmission/ reception antenna 6 via a transmission/reception changeover switch 4 and a filter circuit 5 and a received signal from the transmission/reception antenna 6 is fed to the transmission/reception processing means 1 via the filter circuit 5 and the transmission/reception changeover switch 4, a parallel circuit 12 comprising a bypass switch 10 and a reception low noise amplifier 11 is inserted between the transmission/reception antenna 6 and the transmission/reception changeover switch 4. <P>COPYRIGHT: (C)2004,JPO</p> |
