公开(公告)号：DE102008052222A1

公开(公告)日：2010-04-22

申请号：DE102008052222

申请日：2008-10-17

Applicant: EPCOS AG

Inventor： KLAMM HELMUT ,  SELMEIER PETER

IPC: H04B1/40 ,  H03H9/64

公开(公告)号：DE102005010658A1

公开(公告)日：2006-09-14

申请号：DE102005010658

申请日：2005-03-08

Applicant: EPCOS AG

Inventor： KIWITT JUERGEN ,  JAKOB MICHAEL ,  DADGAR JAVID GHOLAMREZA ,  KOVACS GUENTER ,  KLAMM HELMUT

IPC: H03H9/72 ,  H01P5/10

Abstract: A duplexer includes an antenna terminal, a transmit filter, and a receive filter. The receive filter includes a first sub-filter that includes one or more resonators, and a second sub-filter including a double mode surface acoustic wave (DMS) filter. The second sub-filter is downstream of the first sub-filter relative to the antenna.