Invention Grant
- Patent Title: Frequency-based predistortion signal generation
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Application No.: US17657336Application Date: 2022-03-30
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Publication No.: US12316358B2Publication Date: 2025-05-27
- Inventor: Pushkar Bajirao Kulkarni , Joseph Patrick Burke , Cong Nguyen , Sanghoon Kim , Abdelrahman Mohamed Ahmed Mohamed Ibrahim , Igor Gutman
- Applicant: Qualcomm Incorporated
- Applicant Address: US CA San Diego
- Assignee: Qualcomm Incorporated
- Current Assignee: Qualcomm Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Loza & Loza LLP
- Main IPC: H04B1/04
- IPC: H04B1/04 ; H04B1/525 ; H04L5/00

Abstract:
An apparatus is disclosed for frequency-based predistortion signal generation. In an example aspect, the apparatus includes a predistortion linearizer circuit configured to be coupled to an input of an amplifier. The amplifier has non-linearities associated with multiple frequencies. The multiple frequencies include a first subset of frequencies and a second subset of frequencies. The predistortion linearizer circuit is also configured to accept an input signal. The predistortion linearizer circuit is additionally configured to generate, based on the input signal, a compensation signal to attenuate the non-linearities existing within the first subset of frequencies more than the non-linearities existing within the second subset of frequencies. The predistortion linearizer circuit is further configured to generate a pre-distorted signal based on the input signal and the compensation signal.
Public/Granted literature
- US20230318636A1 Frequency-Based Predistortion Signal Generation Public/Granted day:2023-10-05
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