Wave transmission lines and networks – Coupling networks – Electromechanical filter
Reexamination Certificate
2005-09-01
2008-10-14
Whitehead, Jr., Carl (Department: 2813)
Wave transmission lines and networks
Coupling networks
Electromechanical filter
C333S133000, C333S194000, C333S195000, C333S196000, C310S31300R, C310S31300R, C310S31300R, C310S31300R, C438S106000, C438S108000, C029S025350
Reexamination Certificate
active
07436273
ABSTRACT:
A SAW chip (11) where ones are balanced signal terminals and the others are unbalanced signal terminals is mounted on a mounting board (12) in a flip chip manner, and the mounting board (12) and a surface of the SAW chip are covered with resin (19). At that time, grounds of first and second SAW filters (1, 2) in the SAW chip (11) are connected together and an annular pattern (14) is formed so as to surround a signal pattern of the SAW chip (11) on the mounting board (12) on which the SAW chip (11) is mounted, and the annular electrode (14) is connected to a ground pattern.
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patent: 6744333 (2004-06-01), Sawada
patent: 7227429 (2007-06-01), Kawachi et al.
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Androla William L.
Epson Toyocom Corporation
Jr. Carl Whitehead
Koda H. Henry
Malek Maliheh
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