| 摘要 |
<p>In a mobile communication apparatus capable of performing simultaneous transmission and reception operation, the reception sensitivity is enhanced while the simultaneous transmission and reception operation is not performed. The mobile communication apparatus, which has an antenna-switching device for switching the connections of first and second antennas, performs a selective connect to a transmission system including a transmission side filter and a transmission part or to a reception system including a reception side filter and a reception part. The antenna-switching device comprises an antenna duplexer that connects the transmission system to either the first or second antenna at the timing of performing a transmission, and that connects the reception system to either the first or second antenna at the timing of performing a reception, and that connects the transmission side filter and reception side filter to either the first or second antenna at the timing of performing a simultaneous transmission and reception operation.</p> |
