Radio-frequency switches and related circuits
AssigneeSkyworks Solutions, Inc.
InventorGuillaume Alexandre BLIN
Life of this patent
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Abstract
A radio-frequency switch can include a first node and a second node, and a plurality of transistors implemented in a stack configuration between the first node and the second node, with each transistor having a source, a drain and a gate. The switch can further include a bias circuit configured to bias the transistors from a bias node. The bias circuit can include a gate-gate resistor that couples each pair of neighboring transistors of the plurality of transistors, and a feed node coupled to the bias node, with the feed node being connected directly to the gate of a selected transistor of the plurality of transistors.
Claims20
A switching circuit comprising:
- a first node and a second node;
- a plurality of transistors implemented in a stack configuration between the first node and the second node, each transistor having a source, a drain and a gate, the transistors configured to be in an ON state or an OFF state to respectively allow or inhibit passage of a signal between the first and second nodes;
- and
- a bias circuit configured to bias the transistors from a bias node, and including a gate-gate resistor that couples each pair of neighboring transistors of the plurality of transistors, the bias circuit further including a feed node coupled to the bias node, the feed node connected directly to the gate of a selected transistor of the plurality of transistors.
A switching module comprising:
- a packaging substrate configured to receive a plurality of components;
- and
- a switch implemented on the packaging substrate, the switch including a first node, a second node, and a plurality of transistors implemented in a stack configuration between the first node and the second node, each transistor having a source, a drain and a gate, the transistors configured to be in an ON state or an OFF state to respectively allow or inhibit passage of a signal between the first and second nodes, the switch further including a bias circuit configured to bias the transistors from a bias node, and including a gate-gate resistor that couples each pair of neighboring transistors of the plurality of transistors, the bias circuit further including a feed node coupled to the bias node, the feed node connected directly to the gate of a selected transistor of the plurality of transistors.
A wireless device comprising:
- a switch including a first node, a second node, and a plurality of transistors implemented in a stack configuration between the first node and the second node, each transistor having a source, a drain and a gate, the transistors configured to be in an ON state or an OFF state to respectively allow or inhibit passage of a signal between the first and second nodes, the switch further including a bias circuit configured to bias the transistors from a bias node, and including a gate-gate resistor that couples each pair of neighboring transistors of the plurality of transistors, the bias circuit further including a feed node coupled to the bias node, the feed node connected directly to the gate of a selected transistor of the plurality of transistors.
Dependencies are inferred from the claim text.