Invention Grant
- Patent Title: Radio frequency transceiver front-end systems and methods
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Application No.: US15875782Application Date: 2018-01-19
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Publication No.: US10200067B1Publication Date: 2019-02-05
- Inventor: Ehsan Adabi , Albert C. Jerng
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: APPLE INC.
- Current Assignee: APPLE INC.
- Current Assignee Address: US CA Cupertino
- Agency: Fletcher Yoder PC
- Main IPC: H04B1/40
- IPC: H04B1/40 ; H04B1/00 ; H04B1/403 ; H03F3/181 ; H04B15/06

Abstract:
Systems and methods for improving operational efficiency of a radio frequency system, which includes a low noise amplifier coupled to an antenna that generates an analog electrical signal based on received electromagnetic waves. The low noise amplifier includes a positive input transistor with a first drain, a negative input transistor with a second drain, a first data branch coupled between the first and second drains, and a second data branch coupled between the first drain and second drains. The first data branch supplies a first current modulated signal generated based on the analog electrical signal when the radio frequency system expects the received electromagnetic waves to include data indicated using a first communication protocol. The second data branch supplies a second current modulated signal generated based on the analog electrical signal when the radio frequency system expects the received electromagnetic waves to include data indicated using a second communication protocol.
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