Radio-frequency front-end module
AssigneeRichWave Technology Corp.
InventorChia-Wei Hsu
Life of this patent
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Abstract
A radio-frequency front-end module includes a common node, a first node, a second node, a third node, a first path, a second path and a third path. The first path may be disposed between the common node and the first node and may include an inductor. The second path may be disposed between the common node and the second node and may include a second switch. The third path may be disposed between the common node and the third node and include a third switch. When the second switch is turned on, the second path may transceive the second signal and the third switch may be turned off, such that the inductor in the first path may provide an inductive impedance for the second signal, and the third switch may provide a capacitive impedance for the second signal.
Claims10
A radio-frequency (RF) front-end module comprising:
- a common node;
- a first node;
- a second node;
- a third node;
- a first path disposed between the common node and the first node and comprising a first inductor;
- a second path disposed between the common node and the second node and comprising a second switch, wherein the second path is configured to transceive a second RF signal;
- and
- a third path disposed between the common node and the third node and comprising a third switch, wherein the third path is configured to transceive a third RF signal;
- wherein when the second switch is turned on, the second path transceives the second RF signal and the third switch is turned off, such that the first inductor provides a first inductive impedance for the second RF signal and the third switch provides a first capacitive impedance for the second RF signal;
- the first path is configured to transceive a first RF signal;
- the first path further comprises a first shunt circuit and a first switch;
- the first inductor comprises a first terminal coupled to the common node, and a second terminal;
- the first shunt circuit comprises a first terminal coupled to the second terminal of the first inductor, and a second terminal coupled to a first reference voltage node;
- the first switch comprises a first terminal coupled to the second terminal of the first inductor and coupled to the first terminal of the first shunt circuit, and a second terminal coupled to a fourth node;
- and
- when the second switch is turned on, the first shunt circuit is turned on.
Dependencies are inferred from the claim text.