Invention Application
- Patent Title: Amplifier Circuitry for Carrier Aggregation
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Application No.: US17341159Application Date: 2021-06-07
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Publication No.: US20220094313A1Publication Date: 2022-03-24
- Inventor: Seyed Mohammad Hossein Mohammadnezhad , Xi Yao , Aly Ismail
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Main IPC: H03F3/24
- IPC: H03F3/24 ; H03F3/195 ; H03F1/22 ; H03F3/68

Abstract:
An electronic device may include wireless circuitry with a baseband processor, a transceiver circuit, a front-end module, and an antenna. The front-end module may include amplifier circuitry such as a low noise amplifier for amplifying received radio-frequency signals. The amplifier circuitry is operable in a non-carrier-aggregation mode and a carrier aggregation mode. The amplifier circuitry may include an input transformer that is coupled to multiple amplifier stages such as a common gate amplifier stage, a cascode amplifier stage, and a common source amplifier stage. The common gate amplifier stage may include switches for selectively activating a set of cross-coupled capacitors to help maintain input impedance matching in the non-carrier-aggregation mode and the carrier-aggregation mode. The common source amplifier stage may include additional switches for activating and deactivating the common source amplifier stage to help maintain the gain in the non-carrier-aggregation mode and the carrier-aggregation mode.
Public/Granted literature
- US11595075B2 Amplifier circuitry for carrier aggregation Public/Granted day:2023-02-28
Information query
IPC分类: