Semiconductor switching device

Telecommunications – Transmitter and receiver at same station – With transmitter-receiver switching or interaction prevention

Reexamination Certificate

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Details

C455S083000, C257S020000, C257S024000, C257S027000, C257S192000, C257S210000

Reexamination Certificate

active

10105802

ABSTRACT:
A semiconductor switching device includes two FETs with different device characteristics, a common input terminal, and two output terminals. The gate width of each FET is about 400 μm, and the maximum power required for the device operation is maintained by a lager conductivity of the channel layer of one FET and by a lower conductivity of the channel layer of another FET. The device operates at frequencies of 2.4 GHz or higher without use of shunt FET.

REFERENCES:
patent: 3974486 (1976-08-01), Curtis et al.
patent: 4224088 (1980-09-01), Komatsu et al.
patent: 4420743 (1983-12-01), Upadhyayula
patent: 5081706 (1992-01-01), Kim
patent: 5945867 (1999-08-01), Uda et al.
patent: 6107866 (2000-08-01), Migliavacca
patent: 6580107 (2003-06-01), Asano et al.
patent: 0625831 (1994-11-01), None
patent: 0784345 (1997-07-01), None
patent: 63-20041 (1988-04-01), None
patent: 6-29811 (1994-02-01), None
patent: 6-334506 (1994-12-01), None
patent: 7-303001 (1995-11-01), None
patent: 8-70245 (1996-03-01), None
patent: 8-195667 (1996-07-01), None
patent: 8-204528 (1996-08-01), None
patent: 8-204530 (1996-08-01), None
patent: 8-213891 (1996-08-01), None
patent: 2557561 (1996-09-01), None
patent: 8-293776 (1996-11-01), None
patent: 9-8501 (1997-01-01), None
patent: 9-55682 (1997-02-01), None
patent: WO-00/74144 (2000-12-01), None
Ohbata et al., “High Power Handling GaAs SWIC for GSM Application” NEC Tech. Review 52(3), 1999. pp. 150-152.
Kohama et al., “High Power DPDT Antenna Switch MMIC for Digital Cellular Systems” IEEE Journal of Solid-State Circuits, 31(10), 1996, pp. 1406-1411.
Nogawa et al., “Compact GaAs ICs for PHS” Sanyo Technical Review, 29(1), 1997, pp. 52-59.
M. J. Schindler et al. (1990) “A High Power 2-18Ghz T/R Switch,” IEEE 1990 Microwave and Millimeter-Wave Monolithic Circuits Symposium, pp. 119-122.
European Search Report dated Mar. 29, 2005, directed to counterpart application.

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