| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide radio communication equipment enabling a plurality of radio communication systems to transmit and receive simultaneously, even when the plurality of radio communication systems use signals of mutually near frequency bands. <P>SOLUTION: Between a first and a second antennas 6, 7 and a duplexer 3 and a transmission/reception switch 5, there is provided a switch circuit 8 constituted of switches 9-12 and paths 13, 14. In case of using a dual mode, the switch circuit 8 connects the duplexer 3 and the transmission/reception switch 5 to the first and the second antennas 6, 7, respectively. Meanwhile, in case of using a single mode in which only the first radio system 2 is in use, the switch circuit 8 connects the duplexer 3 to either of the first and the second antennas 6, 7. Further, in case of using a single mode in which only the second radio system 4 is in use, the switch circuit 8 connects the transmission/reception switch 5 to either of the first and the second antennas 6, 7. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
