Integrated compensation of amplitude and phase distortions
The power amplifier circuit addresses the challenge of compensating for amplitude and phase distortions by integrating load modulation and phase compensation circuits, controlled by a control circuit using tunable reference and saturation detection currents, thereby enhancing RF signal amplification and transmission efficiency.
WO2025071595A1 Publication Date: 2025-04-03SKYWORKS SOLUTIONS INC
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Patent Information
- Application Number
- PCT/US2023/075260
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-09-27
- Publication Date
- 2025-04-03
AI Technical Summary
Technical Problem
Existing RF power amplifiers face challenges in simultaneously compensating for amplitude and phase distortions, which can lead to inefficiencies and signal degradation in RF transmission.
Method used
The proposed power amplifier circuit integrates a load modulation circuit and a phase compensation circuit, controlled by a control circuit that uses tunable reference currents and saturation detection currents to generate control signals for both circuits.
Benefits of technology
This integrated approach effectively compensates for amplitude and phase distortions, improving the efficiency and quality of RF signal amplification and transmission.
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Abstract
In some embodiments, a power amplifier circuit can include a power amplifier having an input node and an output node, a load modulation circuit coupled to the output node of the power amplifier, and a phase compensation circuit implemented in the input node side of the power amplifier. The power amplifier circuit can further include a control circuit configured to provide a control signal to the load modulation circuit based on a first current representative of a tunable reference current and a second current representative of a saturation detection current. In some embodiments, the control circuit can be further configured to provide a control signal to the phase compensation circuit based on a third current representative of a tunable reference current and the second current.
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