Surface acoustic wave device and communication device using...

Details Surface acoustic wave device and communication device using... Surface acoustic wave device and communication device using...

2006-05-09

2006-05-09

Summons, Barbara (Department: 2817)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C333S195000, C333S133000, C310S31300R

Reexamination Certificate

active

07042313

ABSTRACT:
Two or more comb-shaped electrode portions (11, 12, 13, 21, 22, and23) are provided on a piezoelectric substrate (60) so as to have a balanced-to-unbalanced conversion function. At least one of the adjacent electrode fingers at the boundaries of adjacent comb-shaped electrode portions (11, 12, 13, 21, 22, and23) is connected to one of an unbalanced terminal (5) and balanced terminals (6and7).

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Official Communication issued on Oct. 4, 2005, in the corresponding Japanese Application No. 2002-134755.
English translation of Official Communication issued on Oct. 4, 2005, in the corresponding Japanese Application No. 2002-134755.

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