Active solid-state devices (e.g. – transistors – solid-state diode – Regenerative type switching device
Reexamination Certificate
2006-09-19
2006-09-19
Lee, Eddie C. (Department: 2811)
Active solid-state devices (e.g., transistors, solid-state diode
Regenerative type switching device
C257S275000, C257S342000, C257S728000, C257S664000, C257S724000, C257S277000, C257S337000
Reexamination Certificate
active
07109531
ABSTRACT:
A high frequency switch, has a transmitting terminal, a receiving terminal, an antenna terminal, a first diode having an anode electrically connected to the transmitting terminal and a cathode electrically connected to the antenna terminal, a second diode having an anode connected through a transmission line of ¼ wavelength to the antenna terminal which is electrically connected to the receiving terminal, and having the side of a cathode grounded, and a control terminal provided to a node between the transmitting terminal and the first anode. The first and second diodes have a tradeoff relationship between ON resistance thereof and capacitance between the anode and the cathode, and the ON resistance of the first diode is lower than the ON resistance of the second diode, and the capacitance of the second diode in the OFF state is smaller than the capacitance of the first diode in the OFF state.
REFERENCES:
patent: 6442376 (2002-08-01), Furutani et al.
patent: 06-197043 (1994-07-01), None
Ishizaki Toshio
Kitazawa Shoichi
Tanaka Masaharu
Yamada Toru
Im Junghwa
Lee Eddie C.
RatnerPrestia
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