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US 2024/0405771 A1Published application
Body resistor bypass for rf fet switch stack
AssigneepSemi Corporation
InventorsEric S. SHAPIRO, Ravindranath D. SHRIVASTAVA, Fleming LAM, Matt ALLISON
Life of this patent
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Abstract
A FET switch stack and a method to operate a FET switch stack. The FET switch stack includes a stacked arrangement of body bypass FET switches connected across respective common body resistors. The body bypass FET switches bypass the respective common body resistors during the OFF steady state of the FET switch stack and do not bypass the respective common body resistors during the ON steady state.
Claims17
(canceled)
A FET switch stack comprising:
- a stacked arrangement of FET switches connected at one end to an RF terminal configured to be coupled to an RF signal, the FET switch stack configured to have an ON or OFF steady state where the FET switches are respectively ON or OFF and a transition state where the FET switches transition from ON to OFF or vice versa;
- a body resistor network comprising resistors connected to body terminals of the FET switches;
- common body resistors connected to the body resistor network, the body resistor network and the common body resistors configured to feed a body control voltage to the body terminals of the FET switches;
- and
- a stacked arrangement of body bypass FET switches, each body bypass FET switch connected across a respective common body resistor of the common body resistors and configured to i) bypass the respective common body resistor during at least a portion of the OFF steady state of the FET switch stack and ii) not to bypass the respective common body resistor during at least a portion of the ON steady state.
2 more elements
Dependencies are inferred from the claim text.