Telecommunications – Transmitter and receiver at same station – With transmitter-receiver switching or interaction prevention
Reexamination Certificate
2007-08-20
2008-10-14
Vo, Nguyen (Department: 2618)
Telecommunications
Transmitter and receiver at same station
With transmitter-receiver switching or interaction prevention
C455S552100
Reexamination Certificate
active
07437129
ABSTRACT:
There are provided a transmission/reception switching circuit which is small in insertion loss and harmonic distortion and allows an increase in the output power of a power amplifier and an electronic component for communication on which the transmission/reception switching circuit is mounted. As an element composing a transmission/reception switching circuit in a wireless communication system, series-connected FETs or a multi-gate FET are used in place of a diode. Gate resistors connected between the individual gate terminals and a control terminal are designed to have resistance values which become progressively smaller from the gate to which a highest voltage is applied toward the gate to which a lowest voltage is applied.
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Nakajima Akishige
Ogawa Takashi
Osakabe Shinya
Shigeno Yasushi
Suenaga Hidenori
Mattingly ,Stanger ,Malur & Brundidge, P.C.
Renesas Technology Corp.
Vo Nguyen
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