Band elimination filter, filter device, antenna duplexer and...

Details Band elimination filter, filter device, antenna duplexer and... Band elimination filter, filter device, antenna duplexer and...

2006-08-01

2006-08-01

Summons, Barbara (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S189000, C333S193000

Reexamination Certificate

active

07084718

ABSTRACT:
A band elimination filter includes an input terminal and an output terminal. A capacitor is coupled between a first terminal connected to the input terminal and a second terminal connected to the output terminal. The first terminal is grounded only via a first grounding point. The second terminal is grounded only via a second grounding point. A first acoustic resonator is connected between the first terminal and the first grounding point and a second acoustic resonator is connected between the second terminal and the second grounding point.

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European Search Report for EP 03 02 0624, dated Dec. 16, 2003.

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