发明申请
- 专利标题： INTEGRATED CIRCUIT, WIRELESS COMMUNICATION UNIT AND METHOD FOR PROVIDING A POWER SUPPLY
- 专利标题（中）： 集成电路，无线通信单元及提供电源的方法
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申请号： US13345760申请日： 2012-01-09
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公开(公告)号： US20120194274A1公开(公告)日： 2012-08-02
- 发明人: Paul Fowers , Patrick Stanley Riehl
- 申请人： Paul Fowers , Patrick Stanley Riehl
- 主分类号： H03F1/34
- IPC分类号： H03F1/34
摘要：
An integrated circuit is described for providing a power supply to a radio frequency (RF) power amplifier (PA). The integrated circuit includes a low-frequency power supply path including a switching regulator and a high-frequency power supply path arranged to regulate an output voltage of a combined power supply at an output port of the integrated circuit for coupling to a load. The combined power supply is provided by the low-frequency power supply path and high-frequency power supply path. The high-frequency power supply path includes: an amplifier including a voltage feedback and arranged to drive a power supply signal on the high-frequency power supply path; and a capacitor operably coupled to the output of the amplifier and arranged to perform dc level shifting of the power supply signal.
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