Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Reexamination Certificate
2006-10-16
2008-12-02
Tieu, Binh K (Department: 2614)
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
C455S425000, C455S550100, C257S241000
Reexamination Certificate
active
07460852
ABSTRACT:
An RF switch circuit and method for switching RF signals that may be fabricated using common integrated circuit materials such as silicon, particularly using insulating substrate technologies. The RF switch includes switching and shunting transistor groupings to alternatively couple RF input signals to a common RF node, each controlled by a switching control voltage (SW) or its inverse (SW_), which are approximately symmetrical about ground. The transistor groupings each comprise one or more insulating gate FET transistors connected together in a “stacked” series channel configuration, which increases the breakdown voltage across the series connected transistors and improves RF switch compression. A fully integrated RF switch is described including control logic and a negative voltage generator with the RF switch elements. In one embodiment, the fully integrated RF switch includes an oscillator, a charge pump, CMOS logic circuitry, level-shifting and voltage divider circuits, and an RF buffer circuit.
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Burgener Mark L.
Cable James S.
Jaquez & Associates
Jaquez, Esq. Martin J.
Peregrine Semiconductor Corporation
Tieu Binh K
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