Switching device with negative bias circuit
First Claim
Patent Images
1. A switching device comprising:
- a field-effect transistor (FET) including a gate terminal;
a negative bias circuit configured to generate a negative voltage signal at an output terminal of the negative bias circuit based on a radio frequency (RF) signal applied to the switching device; and
a decoder circuit coupled with the output terminal of the negative bias circuit and the gate terminal, the decoder circuit configured to couple the output terminal of the negative bias circuit with the gate terminal when the FET is in an off state.
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Abstract
Embodiments provide a switching device including one or more field-effect transistors (FETs). In embodiments, a negative bias circuit is configured to generate a negative voltage signal based on a radio frequency (RF) signal applied to the circuit. When the FET is in an off state, the negative voltage signal is provided to a gate terminal of the FET.
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Citations
22 Claims
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1. A switching device comprising:
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a field-effect transistor (FET) including a gate terminal; a negative bias circuit configured to generate a negative voltage signal at an output terminal of the negative bias circuit based on a radio frequency (RF) signal applied to the switching device; and a decoder circuit coupled with the output terminal of the negative bias circuit and the gate terminal, the decoder circuit configured to couple the output terminal of the negative bias circuit with the gate terminal when the FET is in an off state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A wireless communication device comprising:
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a transceiver; an antenna; and a radio frequency (RF) front-end coupled with the transceiver and the antenna and configured to communicate signals between the transceiver and the antenna, the RF front-end including a silicon-on-insulator (SOI) switching device that has; a field-effect transistor (FET) including a gate terminal; a negative bias circuit configured to generate a negative voltage signal at an output terminal based on a radio frequency (RF) signal applied to the switching device; and a decoder circuit coupled with the output terminal of the negative bias circuit and the gate terminal, the decoder circuit configured to couple the output terminal of the negative bias circuit with the gate terminal when the FET is in an off state. - View Dependent Claims (15, 16, 17, 18)
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19. A method comprising:
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generating, with a negative bias circuit, a negative voltage signal at an output terminal of the negative bias circuit based on a radio frequency (RF) signal applied to a switching device including a field-effect transistor (FET); receiving, at a decoder circuit, a control signal indicating that the FET is to be in an off state; and coupling, by the decoder circuit, the output terminal of the negative bias circuit with a gate terminal of the FET to provide the negative voltage signal to the gate terminal. - View Dependent Claims (20, 21, 22)
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Specification