Telecommunications – Transmitter and receiver at same station – With transmitter-receiver switching or interaction prevention
Reexamination Certificate
2006-04-11
2006-04-11
Kuntz, Curtis (Department: 2643)
Telecommunications
Transmitter and receiver at same station
With transmitter-receiver switching or interaction prevention
C455S082000, C455S083000, C455S188100
Reexamination Certificate
active
07027777
ABSTRACT:
A high frequency switch having a plurality of signal paths for four frequency bands, the high frequency switch, hasbranching means,first and second transmission reception changeover means connected to the branching means, anda plurality of filters placed in the plurality of signal paths,the first transmission reception changeover means has a first common transmitting end for transmission signals of the first frequency band and the second frequency band, a first receiving end for a reception signal of the first frequency band, and a second receiving end for a reception signal of the second frequency band, andthe second transmission reception changeover means has a second common transmitting end for transmission signals of the third frequency band and the fourth frequency band, a third receiving end for a reception signal of the third frequency band, and a fourth receiving end for a reception signal of the fourth frequency band.
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Ishizaki Toshio
Nakakubo Hideaki
Uriu Kazuhide
Yamada Toru
Kuntz Curtis
Matsushita Electric - Industrial Co., Ltd.
Nguyen Tuan H.
RatnerPrestia
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