ANTENNA DUPLEXER AND COMMUNICATION APPARATUS EMPLOYING THE SAME

摘要

A small-sized antenna duplexer comprising an antenna terminal (11), a first filter (12) electrically connected with the antenna terminal (11) and passing a first frequency band, a second filter (13) electrically connected with the antenna terminal (11) and passing a second frequency band, and a third filter (14) electrically connected with the antenna terminal (11) and passing a third frequency band. In this antenna duplexer, the first filter (12) and the third filter (14) are used for one band, and the second filter (13) and the third filter (14) are used for another band.