| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To miniaturize an antenna duplexer which is capable of selectively using a plurality of systems or bands. <P>SOLUTION: The antenna duplexer is constituted of an antenna terminal 11; a first filter 12 which is electrically connected to the antenna terminal 11 and passes a first frequency band; a second filter 13, which is electrically connected to the antenna terminal 11 and passes a second frequency band; and a third filter 14, which is electrically connected to the antenna terminal 11 and passes a third frequency band, wherein the first filter 12 and the third filter 14 that correspond to one system or to one band, and the second filter 13 and the third filter 14 correspond to another system or band. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
