Circuit module including duplexer

Patent metadata

Field	Value
Publication number	US-9178491-B2
Application number	US-201414146740-A
Country	US
Kind code	B2
Filing date	Jan 3, 2014
Priority date	Jul 8, 2011
Publication date	Nov 3, 2015
Grant date	Nov 3, 2015

Abstract

A circuit module includes a duplexer mounted on a module board and a cover layer is stacked on an insulating layer that is disposed on one principal surface of a device board so as to enclose a predetermined area thereof. A transmission filter device and a reception filter device that have different transmission bands are provided on the one principal surface of the device board in the predetermined area thereof within the space enclosed by the insulating layer between the device board and the cover layer. Accordingly, the duplexer does not include a package board as in the existing technique, and in turn a circuit module including the duplexer mounted on the module board is significantly reduced in height and in size.

First claim

What is claimed is:

1. A circuit module, comprising:
a device board;
an insulating layer arranged on one principal surface of the device board so as to enclose a predetermined area thereof;
a cover layer stacked on the insulating layer so as to provide a space enclosed by the insulating layer between the cover layer and the device board;
a duplexer including a first filter device and a second filter device, the first and second filter devices having different transmission ba…

Assignees

• Murata Manufacturing Co

Inventors

• Takemura Tadaji

Classifications

• H03H9/1092

  Electricity · mapped topic

• H03H9/706 Primary

  Electricity · mapped topic

• H03H9/0576 Primary

  Electricity · mapped topic

• H03H9/725

  Electricity · mapped topic