Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate
2007-10-09
2007-10-09
Takaoka, Dean (Department: 2817)
Wave transmission lines and networks
Plural channel systems
Having branched circuits
C333S104000
Reexamination Certificate
active
11256921
ABSTRACT:
A high frequency switch circuit device includes: at least one distributed element of at least one transmission line; at least two lumped elements of at least one resistor and at least one capacitor; at least one semiconductor device; at least one input terminal; at least two output terminals; and another transmission line, having an open end or a short-circuited end, connected to the input terminal. A total length of the input terminal and said another transmission line is set to be about an integer times λ/2 in case the transmission line has the open end and about an integer times (λ/4+λ/2) in case the transmission line has the short-circuited end. One of the output terminals is used as an input port to which a signal is inputted, and another one of the output terminals is used as an output port from which a signal is outputted.
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Hitachi Kousai Electric Inc.
Mattingly ,Stanger ,Malur & Brundidge, P.C.
Takaoka Dean
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