| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an antenna switch module for a multiband which corresponds at lease four or more different frequency bands and has little transmission loss without having the possibility that noise such as interference and signal leakage occurs in a multilayer substrate. <P>SOLUTION: This antenna switch module for a multiband comprises a first high frequency switch which is connected to a branching filter circuit and switches a transmitting circuit and a receiving circuit for two different frequency bands, a second high frequency switch for switching a transmitting circuit and a receiving circuit for two different frequency bands other than the two different frequency bands switched by the first high frequency switch, and first and second filter circuits connected between an antenna terminal and the first and second high frequency switches. <P>COPYRIGHT: (C)2004,JPO</p> |
