Self-biasing shunt switch with bootstrapping
AssigneeSamsung Electronics Co., Ltd.
InventorsAmitoj Singh, Tienyu Chang, Siu-Chuang Ivan Lu
Life of this patent
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Abstract
A shunt switch. In some embodiments, the shunt switch includes a transistor stack including a first transistor and a capacitor. The transistor stack may have a first end terminal and a second end terminal, the first transistor being connected to the first end terminal, the first end terminal being connected to a switching terminal of the shunt switch. The capacitor may have a first terminal connected to the second end terminal of the transistor stack, and a second terminal connected to a low-impedance node.
Claims16
A shunt switch, comprising:
- a transistor stack comprising a first transistor;
- a bootstrapping transistor;
- and
- a capacitor,
- the transistor stack having a first end terminal and a second end terminal, a drain terminal of the first transistor being connected to the first end terminal, the first end terminal being connected to a switching terminal of the shunt switch,
- the bootstrapping transistor being connected across the first end terminal and a gate of the first transistor, and
- the capacitor having a first terminal connected to the second end terminal of the transistor stack, and a second terminal connected to a low-impedance node.
A shunt switch having a switched terminal, the shunt switch comprising:
- a transistor stack comprising a first transistor, the transistor stack having a first end terminal and a second end terminal, the first end terminal being connected to the switched terminal, and the second end terminal being connected to a low-impedance node;
- and
- a bootstrapping transistor connected across the switched terminal and a gate of the first transistor,
- the shunt switch being configured to self-bias:
- to an on state, when a signal power at the switched terminal is less than a first threshold, and
- to an off state, when the signal power at the switched terminal is greater than a second threshold,
- the second threshold being greater than the first threshold.
Dependencies are inferred from the claim text.