一种基于偏置电压的射频放大装置

By integrating a resistor unit into the signal amplification link circuit of the RF amplifier and connecting it to the bias circuit, the output fluctuation control voltage signal follows the resistance change ratio, thus solving the problem of large static current fluctuation and improving the performance of the RF amplifier.

CN119561500BActive Publication Date: 2026-07-17SHANGHAI FANQI MICROELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI FANQI MICROELECTRONICS CO LTD
Filing Date
2025-01-24
Publication Date
2026-07-17

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Abstract

本发明公开了一种基于偏置电压的射频放大装置。该装置包括：信号放大链路电路及偏置电路；所述信号放大链路电路包括电阻单元及多级放大器芯片；所述电阻单元与所述偏置电路连接；所述偏置电路与多级所述放大器芯片电连接；所述偏置电路，用于输出波动偏置电压信号至多级所述放大器芯片；其中，所述波动偏置电压信号跟随所述电阻单元的电阻变化比例正向变化且当所述电阻变化比例为1时，所述波动偏置电压信号为预设偏置电压；所述电阻单元的电阻变化比例与多级所述放大器芯片上的固定电阻的电阻变化比例相同。本方案显著改善了静态电流较大的波动。
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