Bias modulation for power amplifiers
WO2026143101A1PCT designated stage Publication Date: 2026-07-02MURATA MFG CO LTD +1
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- MURATA MFG CO LTD
- Filing Date
- 2025-12-23
- Publication Date
- 2026-07-02
AI Technical Summary
Technical Problem
Existing RF transmit systems face inefficiencies in bias modulation, leading to suboptimal performance in power amplifiers due to inflexible and unreliable bias adjustments based on supply voltage variations.
Method used
Implementing bias modulation circuitry within a power management integrated circuit (PMIC) or module, allowing for flexible and efficient bias modulation through piecewise linear or non-linear relationships with supply modulation, and incorporating timing adjustments to enhance amplifier performance.
Benefits of technology
Enhances the efficiency and linearity of power amplifiers by dynamically adjusting bias and supply voltages, improving overall system performance and reducing power consumption.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure US2025061107_02072026_PF_FP_ABST
Abstract
According to one aspect of the present disclosure, a radio frequency (RF) transmit system includes: an RF power amplifier (PA); a power management circuit (PMC) configured to receive a control signal and to generate a supply modulation signal having a level responsive to the control signal and selected from a plurality of discrete supply voltage levels; and a bias modulation circuit configured to generate at least one bias modulation signal having a level responsive at least in part to the level of the supply modulation signal, wherein both the supply modulation signal and the bias modulation signal are applied to the RF PA.
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