ANTENNA COMMON CIRCUIT - KYOCERA CORP

Title:

ANTENNA COMMON CIRCUIT

Document Type and Number:

Japanese Patent JP2007266837

Kind Code:

A

Abstract:

To provide an antenna common circuit capable of simplifying filter configuration and reducing the scale of the circuit.

An antenna common circuit 10 comprises a common terminal 4, a ground terminal 3, a first transmission terminal 1 connected to a first transmission circuit operating by a first frequency band, a second transmission terminal 2 connected to a second transmission circuit operating by a second frequency band higher than the first frequency band, a first filter 11 arranged between the common terminal 4 and the first transmission terminal 1 and employing the first frequency band as a pass band, a second filter 12 arranged between the common terminal 4 and the second transmission terminal 2 and employing the second frequency band as a pass band, and a third filter 13 arranged between the common terminal 4 and the ground terminal 3 and employing a third frequency band between the first frequency band and the second frequency band as a pass band. Since the first filter 11 and the second filter 12 can form an attenuation band in combination with the common third filter 13, circuit configuration can be simplified.

Inventors:

HORIUCHI MASAFUMI

Application Number:

JP2006087284A

Publication Date:

October 11, 2007

Filing Date:

March 28, 2006

Export Citation:

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Assignee:

KYOCERA CORP

International Classes:

H03H7/075; H03H7/46; H04B1/3822; H04B1/40

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